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NSR database version of May 21, 2024.

Search: Author = D.Steppenbeck

Found 81 matches.

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2024LI18      Phys.Rev. C 109, 034312 (2024)

B.D.Linh, A.Corsi, A.Gillibert, A.Obertelli, P.Doornenbal, C.Barbieri, T.Duguet, M.Gomez-Ramos, J.D.Holt, B.S.Hu, T.Miyagi, A.M.Moro, P.Navratil, K.Ogata, S.Peru, N.T.T.Phuc, N.Shimizu, V.Soma, Y.Utsuno, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.B.Gerst, J.Gibelin, K.I.Hahn, N.T.Khai, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.T.Wang, V.Werner, X.Xu, Y.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Onset of collectivity for argon isotopes close to N=32

doi: 10.1103/PhysRevC.109.034312
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2023CH26      Phys.Lett. B 843, 138025 (2023)

S.Chen, F.Browne, P.Doornenbal, J.Lee, A.Obertelli, Y.Tsunoda, T.Otsuka, Y.Chazono, G.Hagen, J.D.Holt, G.R.Jansen, K.Ogata, N.Shimizu, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Level structures of 56, 58Ca cast doubt on a doubly magic 60Ca

NUCLEAR REACTIONS 1H(57Sc, 2p)56Ca, E=209 MeV/nucleon; 1H(59Sc, 2p)58Ca, E=199 MeV/nucleon, [57,59Sc secondary beams from 9Be(70Zn, X), E=345 MeV/nucleon, followed by separation and identification of ions of interest using the BigRIPS separator at RIBF-RIKEN facility]; measured reaction residues of 56Ca and 58Ca through identification by the SAMURAI spectrometer, Doppler-corrected Eγ, Iγ, (particle)γ-coin using the DALI2+ array using MINOS liquid hydrogen target. 56,58Ca; deduced energies of the first 2+ levels. Comparison with shell-model calculations with the GXPF1B Hamiltonian in full pf model space, and the state-of-the-art ab initio approaches: VS-IMSRG method, and CC calculations. Systematics of energies of the first 2+ states and S(2n) from experiment (N=22-36) and theory in N=22-54 Ca isotopes.

doi: 10.1016/j.physletb.2023.138025
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2022EN01      Phys.Rev.Lett. 129, 262501 (2022)

M.Enciu, H.N.Liu, A.Obertelli, P.Doornenbal, F.Nowacki, K.Ogata, A.Poves, K.Yoshida, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, P.J.Li, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Extended p3/2 Neutron Orbital and the N=32 Shell Closure in 52Ca

NUCLEAR REACTIONS 1H(52Ca, np)51Ca, E=190-270 MeV/nucleon; measured reaction products, Eγ, Iγ. 51,52Ca; deduced γ-ray energies, single-particle neutron configurations, neutron knockout partial σ, J, π, root-mean-square radii of the neutron orbitals. Comparison with modified-shell-model predictions, the distorted-wave impulse approximation reaction framework. The Radioactive Isotope Beam Factory of RIKEN, operated jointly by the RIKEN Nishina Center and the Center for Nuclear Study, University of Tokyo.

doi: 10.1103/PhysRevLett.129.262501
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2022GE01      Phys.Rev. C 105, 024302 (2022)

R.-B.Gerst, A.Blazhev, K.Moschner, P.Doornenbal, A.Obertelli, K.Nomura, J.-P.Ebran, S.Hilaire, J.Libert, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, F.Browne, A.M.Bruce, R.Caroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, J.Jolie, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, S.Nagamine, N.Nakatsuka, C.R.Nita, C.Nobs, L.Olivier, R.Orlandi, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

γ-ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich 94, 95, 96Kr

NUCLEAR REACTIONS 1H(94Kr, p), (95Kr, p)(95Kr, np), (97Rb, 2p), (96Kr, p), (96Kr, np), (97Rb, n2p), E≈180 MeV/nucleon [secondary beams from 9Be(238U, X), E=345 MeV/nucleon primary reaction]; measured reaction products, Eγ, Iγ, Ep, Ip, pp-coin, gγ∓coin, pγ-coin. 94,95,96Kr; deduced levels, J, π, T1/2 of isomer and levels in 95Kr. Comparison to five-dimensional collective Hamiltonian (5DCH) beyond-mean-field model and mapped IBM calculations. Beam delivered via the ZeroDegree spectrometer to the Euroball RIKEN Cluster Array (EURICA) at RIBF-RIKEN.

doi: 10.1103/PhysRevC.105.024302
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2022KO06      Phys.Lett. B 827, 136953 (2022)

T.Koiwai, K.Wimmer, P.Doornenbal, A.Obertelli, C.Barbieri, T.Duguet, J.D.Holt, T.Miyagi, P.Navratil, K.Ogata, N.Shimizu, V.Soma, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca

NUCLEAR REACTIONS 1H(56Ca, 2p)55K, (56Ca, np)55Ca, E=250 MeV/nucleon; 1H(58Sc, 2p)57Ca, E not given, [secondary 56Ca and 58Sc beams from 9Be(70Zn, X), E=345 MeV/nucleon, followed by selection of fragments of interest using the BigRIPS separator through the TOF-ΔE-Bρ method at RIBF-RIKEN facility]; measured reaction products using the by SAMURAI magnetic spectrometer, protons, Eγ, Iγ, (proton)γ-coin using thick liquid hydrogen target system MINOS and DALI22 array of 226 NaI(Tl) scintillator detectors. 55K, 55,57Ca; deduced levels, J, π, level half-lives, exclusive population σ, spectroscopic factors, short-lived state in 57Ca. Comparison with state-of-the-art theoretical calculations using different approaches such as large-scale shell model (LSSM), valence-space in-medium similarity renormalization group (VS-IMSRG), full-space self-consistent Green's function (SCGF) with NNLOsat and NN+3N(lnl) interactions.

doi: 10.1016/j.physletb.2022.136953
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2021BA28      Phys.Rev. C 103, 064318 (2021)

D.Bazin, N.Aoi, H.Baba, J.Chen, H.Crawford, P.Doornenbal, P.Fallon, K.Li, J.Lee, M.Matsushita, T.Motobayashi, H.Sakurai, H.Scheit, D.Steppenbeck, R.Stroberg, S.Takeuchi, H.Wang, K.Yoneda, C.X.Yuan

Spectroscopy of 33Mg with knockout reactions

NUCLEAR REACTIONS 9Be(34Mg, n)33Mg, E=242.5 MeV/nucleon; 9Be(34Al, p)33Mg, E=229.6 MeV/nucleon, [secondary 34Mg and 34Al beams from 9Be(48Ca, X), E=345 MeV/nucleon primary reaction, followed by separation of fragments of interest using BigRIPS spectrometer at RIBF-RIKEN facility]; measured reaction products and particle identification plot (PID), outgoing 33Mg particles by ZeroDegree spectrometer (ZDS), Eγ, Iγ, (33Mg)γ-coin, parallel momentum distributions using DALI2 array of NaI(Tl) scintillators. 33Mg; deduced levels, J, π, l-transfers, partial σ and compared with eikonal reaction theory, spectroscopic factors; calculated levels, J, π using large-scale shell model with IMSRG, SDPF-MU, SDPF-U-SI and SDPF-U-MIX interactions.

doi: 10.1103/PhysRevC.103.064318
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2021BR11      Phys.Rev.Lett. 126, 252501 (2021)

F.Browne, S.Chen, P.Doornenbal, A.Obertelli, K.Ogata, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, K.Boretzky, C.Caesar, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, M.Holl, J.Kahlbow, D.Kim, D.Korper, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Miki, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, F.Schindler, H.Simon, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Tornqvist, J.Tscheuschner, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Pairing Forces Govern Population of Doubly Magic 54Ca from Direct Reactions

NUCLEAR REACTIONS 1H(55Sc, 2p), E<345 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, partial σ. Comparison with distorted-wave impulse approximation estimates multiplied by the shell model spectroscopic factors. RIKEN RadioactiveIsotope Beam Factory.

doi: 10.1103/PhysRevLett.126.252501
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2021JU02      Phys.Lett. B 814, 136108 (2021)

M.M.Juhasz, Z.Elekes, D.Sohler, Y.Utsuno, K.Yoshida, T.Otsuka, K.Ogata, P.Doornenbal, A.Obertelli, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, N.L.Achouri, O.Aktas, T.Aumann, L.X.Chung, Zs.Dombradi, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, H.N.Liu, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

First spectroscopic study of 51Ar by the (p, 2p) reaction

NUCLEAR REACTIONS 1H(51Ar, 2p), (52K, 2p), E ∼ 260 MeV/nucleon; measured reaction products, Eγ, Iγ. 51Ar, 52K; deduced γ-ray energies and intensities, resonance parameters, σ, spectroscopic factors, partial level schemes, J, π. Comparison with shell model calculations, the Radioactive Isotope Beam Factory operated by the RIKEN Nishina Center and the Center for Nuclear Study of the University of Tokyo.

doi: 10.1016/j.physletb.2021.136108
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2021JU04      Phys.Rev. C 103, 064308 (2021)

M.M.Juhasz, Z.Elekes, D.Sohler, K.Sieja, K.Yoshida, K.Ogata, P.Doornenbal, A.Obertelli, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, N.L.Achouri, O.Aktas, T.Aumann, L.X.Chung, Zs.Dombradi, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, H.N.Liu, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

First spectroscopic study of 63V at the N=40 island of inversion

NUCLEAR REACTIONS 1H(63V, p), (64Cr, 2p), E=250 MeV/nucleon, [secondary 63V and 64Cr beams from 9Be(70Zn, X), E=325 MeV/nucleon primary reaction, followed by separation of fragments of interest using BigRIPS spectrometer at RIBF-RIKEN facility, incident on MINOS hydrogen target]; measured beam-like fragments using SAMURAI magnetic spectrometer, Eγ, Iγ, (fragment)γ-coin using DALI2+ array of 226 NaI(Tl) scintillation detectors. 63V; deduced levels, J, π, shell-model calculations using Lenzi-Nowacki-Poves-Sieja interaction; analyzed (p, p') excitation cross sections by the coupled channel formalism assuming pure quadrupole as well as quadrupole + hexadecapole deformations. First study of excited states in the 63V nucleus, with its relevance to 'island of inversion' located below 68Ni.

doi: 10.1103/PhysRevC.103.064308
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2021LI58      Phys.Rev. C 104, 044331 (2021)

B.D.Linh, A.Corsi, A.Gillibert, A.Obertelli, P.Doornenbal, C.Barbieri, S.Chen, L.X.Chung, T.Duguet, M.Gomez-Ramos, J.D.Holt, A.Moro, P.Navratil, K.Ogata, N.T.T.Phuc, N.Shimizu, V.Soma, Y.Utsuno, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, N.Chiga, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, N.T.Khai, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, N.D.Ton, H.Tornqvist, V.Vaquero, V.Wagner, H.Wang, V.Werner, X.Xu, Y.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Investigation of the ground-state spin inversion in the neutron-rich 47, 49Cl isotopes

NUCLEAR REACTIONS 1H(50Ar, 2p)49Cl, (50Ar, 2n2p)47Cl; 1H(52K, n3p)49Cl; 1H(48Cl, np)47Cl, [secondary ion beams from 9Be(70Zn, X), E=345 MeV/nucleon primary reaction at RIBF-RIKEN facility, followed by separation of ions by BigRIPS separator using Bπ-ΔE-TOF measurement and MINOS hydrogen target system]; measured reaction products, A/Q versus Z plot, scattered ions of 47Cl and 49Cl using the SAMURAI spectrometer and identified by A/Q and Z, Eγ, Iγ, γγ-coin using DALI2+ array of 226 NaI(Tl) detectors. 47,49Cl; deduced levels, J and π for 49Cl, parallel and transverse momentum distributions and L-transfers for 49Cl, inclusive cross sections. Comparison of experimental level structure with shell-model calculations using SDPF-MU interactions, and IMSRG calculation. Comparison of momentum distributions with distorted-wave impulse approximation (DWIA), and transfer to continuum (TC) methods. Comparison of inclusive cross sections with LISE++ theoretical calculations. 49Cl; calculated levels, J, π, T1/2 of levels, B(E2), B(M1) using SDFP-MU shell-model. 45,47,49Cl; calculated levels, J, π, spectroscopic factors using shell-model and ab initio approaches. 41,43,45,47Cl; spin inversion issue not settled. Comparison of experimental and theoretical (from CGF) energy difference between the first 1/2+ and 3/2+ states in 35,36,37,38,39,40,41,43,45,47,49,51,53Cl, 37,38,39,40,41,43,45,47,49,51,53,55K.

doi: 10.1103/PhysRevC.104.044331
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2021WI01      Phys.Rev.Lett. 126, 072501 (2021)

K.Wimmer, W.Korten, P.Doornenbal, T.Arici, P.Aguilera, A.Algora, T.Ando, H.Baba, B.Blank, A.Boso, S.Chen, A.Corsi, P.Davies, G.de Angelis, G.de France, J.-P.Delaroche, D.T.Doherty, J.Gerl, R.Gernhauser, M.Girod, D.Jenkins, S.Koyama, T.Motobayashi, S.Nagamine, M.Niikura, A.Obertelli, J.Libert, D.Lubos, T.R.Rodriguez, B.Rubio, E.Sahin, T.Y.Saito, H.Sakurai, L.Sinclair, D.Steppenbeck, R.Taniuchi, R.Wadsworth, M.Zielinska

Shape Changes in the Mirror Nuclei 70Kr and 70Se

NUCLEAR REACTIONS 197Au, 209Bi(70Kr, 70Kr'), (70Br, 70Br'), (70Se, 70Se'), E=140 MeV/nucleon; measured reaction products, Eγ, Iγ. 70Kr, 70Br, 70Se; deduced γ-ray energies, σ, nuclear deformation lengths, B(E2) values. Comparison with available data.

doi: 10.1103/PhysRevLett.126.072501
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2020BA27      Phys.Rev.Lett. 124, 222504 (2020)

S.Bagchi, R.Kanungo, Y.K.Tanaka, H.Geissel, P.Doornenbal, W.Horiuchi, G.Hagen, T.Suzuki, N.Tsunoda, D.S.Ahn, H.Baba, K.Behr, F.Browne, S.Chen, M.L.Cortes, A.Estrade, N.Fukuda, M.Holl, K.Itahashi, N.Iwasa, G.R.Jansen, W.G.Jiang, S.Kaur, A.O.Macchiavelli, S.Y.Matsumoto, S.S.Momiyama, I.Murray, T.Nakamura, S.J.Novario, H.J.Ong, T.Otsuka, T.Papenbrock, S.Paschalis, A.Prochazka, C.Scheidenberger, P.Schrock, Y.Shimizu, D.Steppenbeck, H.Sakurai, D.Suzuki, H.Suzuki, M.Takechi, H.Takeda, S.Takeuchi, R.Taniuchi, K.Wimmer, K.Yoshida

Two-Neutron Halo is Unveiled in 29F

NUCLEAR REACTIONS C(29F, X), E=255 MeV/nucleon; C(27F, X), E=250 MeV/nucleon; measured reaction products, En, In. 27,29F; deduced two-neutron Borromean halo. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.124.222504
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2020CO01      Phys.Lett. B 800, 135071 (2020)

M.L.Cortes, W.Rodriguez, P.Doornenbal, A.Obertelli, J.D.Holt, S.M.Lenzi, J.Menendez, F.Nowacki, K.Ogata, A.Poves, T.R.Rodriguez, A.Schwenk, J.Simonis, S.R.Stroberg, K.Yoshida, L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Shell evolution of N=40 isotones towards 60Ca: First spectroscopy of 62Ti

NUCLEAR REACTIONS 1H(63V, 2p)62Ti, E≈200 MeV/nucleon, [secondary 63V beam from 9Be(70Zn, X), E=345 MeV/nucleon primary reaction followed by separation of fragments of interest event-by-event using BigRIPS spectrometer at RIBF-RIKEN]; measured yields of reaction products with Z=22-24 and A/Q=2.60 to 2.85, Eγ, Iγ, γγ-coin using MINOS device, SAMURAI dipole magnet, Time Projection Chamber (TPC), and DALI2+ array of 226 NaI(Tl) detectors. 62Ti; deduced first 2+ and 4+ levels, cross sections. Comparison with theoretical calculations for N=40, Z=20-32 (even) using large-scale shell model (LSSM), symmetry conserving configuration mixing (SCCM) with Gogny D1S effective interaction, and valence-space in-medium similarity renormalization group (VS-IMSRG).

doi: 10.1016/j.physletb.2019.135071
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2020CO12      Phys.Rev. C 102, 064320 (2020)

M.L.Cortes, W.Rodriguez, P.Doornenbal, A.Obertelli, J.D.Holt, J.Menendez, K.Ogata, A.Schwenk, N.Shimizu, J.Simonis, Y.Utsuno, K.Yoshida, L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

N = 32 shell closure below calcium: Low-lying structure of 50Ar

NUCLEAR REACTIONS 1H(52Ca, 3p), E=266 MeV; 1H(53Ca, n3p), E=258 MeV; 1H(54Ca, 2n3p), E=251 MeV; 1H(55Ca, 3n3p), E=247 MeV; 1H(51K, 2p), E=257 MeV; 1H(52K, n2p), E=250 MeV; 1H(53K, 2n2p), E=245 MeV; 1H(51Ar, np), E=241 MeV; 1H(50Ar, p'), [secondary 52,53,54,55Ca, 51,52,53K, 50,51Ar beams from 9Be(70Zn, X), E=345 MeV/nucleon primary beam, followed by separation of fragments using BigRIPS separator at RIBF-RIKEN facility]; measured reaction products, yields, inclusive σ, Eγ, Iγ, γγ-coin using the MINOS hydrogen target, time projection chamber, SAMURAI dipole magnet, and DALI2+ array of 226 NaI(Tl) detectors. 50Ar; deduced Doppler corrected γ-ray spectra, levels, J, π; calculated levels, J, π, spectroscopic factors and cross sections for levels using the SDPF-MU shell model, and ab initio VS-IMSRG approach.

doi: 10.1103/PhysRevC.102.064320
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2020FR06      Phys.Rev.Lett. 125, 012501 (2020)

A.Frotscher, M.Gomez-Ramos, A.Obertelli, P.Doornenbal, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, N.Paul, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, M.Sasano, Y.Shiga, N.Shimizu, D.Steppenbeck, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, Zs.Dombradi, F.Flavigny, S.Franchoo, F.Giacoppo, M.Gorska, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, C.Louchart, R.Lozeva, K.Matsui, T.Miyazaki, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, S.Nishimura, C.R.Nobs, L.Olivier, S.Ota, Z.Patel, Zs.Podolyak, M.Rudigier, E.Sahin, T.Y.Saito, C.Shand, P.-A.Soderstrom, I.G.Stefan, T.Sumikama, D.Suzuki, R.Orlandi, V.Vaquero, Zs.Vajta, V.Werner, K.Wimmer, J.Wu, Z.Xu

Sequential Nature of (p, 3p) Two-Proton Knockout from Neutron-Rich Nuclei

NUCLEAR REACTIONS 1H(101Sr, 3p), (75Zn, 3p), (81Ga, 3p)79Cu, (81Ga, 2p)80Zn, E ∼ 205 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ.

doi: 10.1103/PhysRevLett.125.012501
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2020LI15      Phys.Rev.Lett. 124, 222501 (2020)

C.Lizarazo, P.-A.Soderstrom, V.Werner, N.Pietralla, P.M.Walker, G.X.Dong, F.R.Xu, T.R.Rodriguez, F.Browne, P.Doornenbal, S.Nishimura, CC.Nija, A.Obertelli, T.Ando, T.Arici, G.Authelet, H.Baba, A.Blazhev, A.M.Bruce, D.Calvet, R.J.Caroll, F.Chateau, S.Chen, L.X.Chung, A.Corsi, M.L.Cortes, A.Delbart, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, J.Gerl, J.-M.Gheller, A.Giganon, A.Gillibert, M.Gorska, A.Gottardo, I.Kojouharov, N.Kurz, V.Lapoux, J.Lee, M.Lettmann, B.D.Linh, J.J.Liu, Z.Liu, S.Momiyama, K.Moschner, T.Motobayashi, S.Nagamine, N.Nakatsuka, M.Niikura, C.Nobs, L.Olivier, Z.Patel, N.Paul, Zs.Podolyak, J.-Y.Rousse, M.Rudigier, T.Y.Saito, H.Sakurai, C.Santamaria, H.Schaffner, C.Shand, I.Stefan, D.Steppenbeck, R.Taniuchi, T.Uesaka, V.Vaquero, K.Wimmer, Z.Xu

Metastable States of 92, 94Se: Identification of an Oblate K Isomer of 94Se and the Ground-State Shape Transition between N = 58 and 60

NUCLEAR REACTIONS 9Be(238U, X)92Se/94Se, 1H(92Se, 92Se'), (94Se, 94Se'), E<345 MeV/nucleon; measured reaction products. 92,94Se; deduced γ-ray energies, J, π, isomeric state T1/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.124.222501
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2020LO06      Phys.Rev. C 101, 034314 (2020)

T.Lokotko, S.Leblond, J.Lee, P.Doornenbal, A.Obertelli, A.Poves, F.Nowacki, K.Ogata, K.Yoshida, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, Z.Y.Xu, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, V.Werner, F.Browne, L.X.Chung, Zs.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, M.Lettmann, C.Louchart, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, L.Olivier, S.Ota, Z.Patel, E.Sahin, C.Shand, P.-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Zs.Vajta, J.Wu

Shell structure of the neutron-rich isotopes 69, 71, 73Co

NUCLEAR REACTIONS 1H(70Ni, 2p), E=252 MeV/nucleon; 1H(72Ni, 2p), E=241 MeV/nucleon; 1H(74Ni, 2p), E=234 MeV/nucleon, [secondary beams from 9Be(238U, X), E=345 MeV/nucleon]; measured reaction products, Eγ, Iγ, γγ-coin, inclusive and exclusive σ using the DALI2 NaI(Tl) detector array for γ detection, the MINOS time-projection-chamber for p detection, the BigRIPS separator for secondary beam identification, and ZeroDegree spectrometer for reaction product identification at RIBF-RIKEN. 69,71,73Co; deduced levels, J, π, configurations, half-life estimates of three low energy transitions in 69Co. Distorted-wave impulse approximation (DWIA) analysis for cross sections. Comparison with shell model calculations using the Lenzi-Nowacki-Poves-Sieja LNPS and PFSDG-U interactions, and with previous experimental data.

doi: 10.1103/PhysRevC.101.034314
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2020SU06      Phys.Lett. B 802, 135215 (2020)

Y.L.Sun, A.Obertelli, P.Doornenbal, C.Barbieri, Y.Chazono, T.Duguet, H.N.Liu, P.Navratil, F.Nowacki, K.Ogata, T.Otsuka, F.Raimondi, V.Soma, Y.Utsuno, K.Yoshida, N.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Restoration of the natural E(1/2+1)-E(3/2+1) energy splitting in odd-K isotopes towards N = 40

NUCLEAR REACTIONS 52,54Ca(p, 2p)51K/53K, E ∼ 250 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, partial σ. Comparison with ab initio and shell-model calculations with improved phenomenological effective interactions.

doi: 10.1016/j.physletb.2020.135215
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2020VA01      Phys.Rev.Lett. 124, 022501 (2020)

V.Vaquero, A.Jungclaus, T.Aumann, J.Tscheuschner, E.V.Litvinova, J.A.Tostevin, H.Baba, D.S.Ahn, R.Avigo, K.Boretzky, A.Bracco, C.Caesar, F.Camera, S.Chen, V.Derya, P.Doornenbal, J.Endres, N.Fukuda, U.Garg, A.Giaz, M.N.Harakeh, M.Heil, A.Horvat, K.Ieki, N.Imai, N.Inabe, N.Kalantar-Nayestanaki, N.Kobayashi, Y.Kondo, S.Koyama, T.Kubo, I.Martel, M.Matsushita, B.Million, T.Motobayashi, T.Nakamura, N.Nakatsuka, M.Nishimura, S.Nishimura, S.Ota, H.Otsu, T.Ozaki, M.Petri, R.Reifarth, J.L.Rodriguez-Sanchez, D.Rossi, A.T.Saito, H.Sakurai, D.Savran, H.Scheit, F.Schindler, P.Schrock, D.Semmler, Y.Shiga, M.Shikata, Y.Shimizu, H.Simon, D.Steppenbeck, H.Suzuki, T.Sumikama, D.Symochko, I.Syndikus, H.Takeda, S.Takeuchi, R.Taniuchi, Y.Togano, J.Tsubota, H.Wang, O.Wieland, K.Yoneda, J.Zenihiro, A.Zilges

Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus 132Sn and the Position of the 0f5/2 Proton-Hole State in 131In

NUCLEAR REACTIONS 4He(132Sn, n), (132Sn, p), E=203 MeV/nucleon; 9Be(238U, X)132Sn, E=345 MeV/nucleon; measured reaction products, Eγ, Iγ. 131Sn, 131In; deduced γ-ray energies, spectroscopic factors, strong fragmentation of single-hole strength. Comparison with theoretical calculations.

doi: 10.1103/physrevlett.124.022501
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2020WI05      Eur.Phys.J. A 56, 159 (2020)

K.Wimmer, T.Arici, W.Korten, P.Doornenbal, J.-P.Delaroche, M.Girod, J.Libert, T.R.Rodriguez, P.Aguilera, A.Algora, T.Ando, H.Baba, B.Blank, A.Boso, S.Chen, A.Corsi, P.Davies, G.de Angelis, G.de France, D.T.Doherty, J.Gerl, R.Gernhauser, T.Goigoux, D.Jenkins, G.Kiss, S.Koyama, T.Motobayashi, S.Nagamine, M.Niikura, S.Nishimura, A.Obertelli, D.Lubos, V.H.Phong, B.Rubio, E.Sahin, T.Y.Saito, H.Sakurai, L.Sinclair, D.Steppenbeck, R.Taniuchi, V.Vaquero, R.Wadsworth, J.Wu, M.Zielinska

Shape coexistence revealed in the N = Z isotope 72Kr through inelastic scattering

doi: 10.1140/epja/s10050-020-00171-3
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2019CH43      Phys.Rev.Lett. 123, 142501 (2019)

S.Chen, J.Lee, P.Doornenbal, A.Obertelli, C.Barbieri, Y.Chazono, P.Navratil, K.Ogata, T.Otsuka, F.Raimondi, V.Soma, Y.Utsuno, K.Yoshida, H.Baba, F.Browne, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, J.Kahlbow, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, N.Achouri, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Quasifree Neutron Knockout from 54Ca Corroborates Arising N=34 Neutron Magic Number

NUCLEAR REACTIONS 1H(54Ca, X)53Ca, E=216 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, exclusive σ, inclusive parallel momentum distributions. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.123.142501
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2019CR02      Phys.Rev.Lett. 122, 052501 (2019)

H.L.Crawford, P.Fallon, A.O.Macchiavelli, P.Doornenbal, N.Aoi, F.Browne, C.M.Campbell, S.Chen, R.M.Clark, M.L.Cortes, M.Cromaz, E.Ideguchi, M.D.Jones, R.Kanungo, M.MacCormick, S.Momiyama, I.Murray, M.Niikura, S.Paschalis, M.Petri, H.Sakurai, M.Salathe, P.Schrock, D.Steppenbeck, S.Takeuchi, Y.K.Tanaka, R.Taniuchi, H.Wang, K.Wimmer

First Spectroscopy of the Near Drip-line Nucleus 40Mg

NUCLEAR REACTIONS C(41Ar, X)40Mg, (40Ar, X)38Mg/36Mg, E<345 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π. Comparison with shell-model calculations.

doi: 10.1103/PhysRevLett.122.052501
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2019LI10      Phys.Rev.Lett. 122, 072502 (2019)

H.N.Liu, A.Obertelli, P.Doornenbal, C.A.Bertulani, G.Hagen, J.D.Holt, G.R.Jansen, T.D.Morris, A.Schwenk, R.Stroberg, N.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

How Robust is the N=34 Subshell Closure? First Spectroscopy of 52Ar

NUCLEAR REACTIONS 1H(53K, 2p), E=245 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, σ. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.122.072502
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2019MU03      Phys.Rev. C 99, 011302 (2019)

I.Murray, M.MacCormick, D.Bazin, P.Doornenbal, N.Aoi, H.Baba, H.Crawford, P.Fallon, K.Li, J.Lee, M.Matsushita, T.Motobayashi, T.Otsuka, H.Sakurai, H.Scheit, D.Steppenbeck, S.Takeuchi, J.A.Tostevin, N.Tsunoda, Y.Utsuno, H.Wang, K.Yoneda

Spectroscopy of strongly deformed 32Ne by proton knockout reactions

NUCLEAR REACTIONS 9Be(33Na, 32Ne), (34Mg, 32Ne), E=235, 221 MeV/nucleon; measured reaction products, Eγ, Iγ, γγ-coin, time of flight and energy loss, σ for one- and two-proton knockout reactions populating levels in 32Ne using the ZeroDegree spectrometer for particle identification and the DALI2 array for γ detection at the RIKEN-RIBF facility. 32Ne; deduced first 2+ and 4+ levels, configuration, E(first 4+)/E(first 2+) ratio. Systematics of energies of the first 2+ and 4+ levels in 26,28,30,32,34,36Ne, 28,30,32,34,36,38Mg, 30,32,34,36,38,40Si. Systematics of cross sections of two-proton knockout reactions for residues of 26,28,30,32Ne. Comparison of experimental inclusive and exclusive reaction cross sections with shell-model and eikonal reaction dynamical calculations.

doi: 10.1103/PhysRevC.99.011302
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2019PA25      Phys.Rev.Lett. 122, 162503 (2019)

N.Paul, A.Obertelli, C.A.Bertulani, A.Corsi, P.Doornenbal, J.L.Rodriguez-Sanchez, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, M.Sasano, Y.Shiga, D.Steppenbeck, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, Zs.Dombradi, F.Flavigny, S.Franchoo, F.Giacoppo, M.Gorska, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, C.Louchart, R.Lozeva, K.Matsui, T.Miyazaki, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, S.Nishimura, C.R.Nobs, L.Olivier, S.Ota, Z.Patel, Zs.Podolyak, M.Rudigier, E.Sahin, T.Y.Saito, C.Shand, P.-A.Soderstrom, I.G.Stefan, T.Sumikama, D.Suzuki, R.Orlandi, V.Vaquero, Zs.Vajta, V.Werner, K.Wimmer, J.Wu, Z.Xu

Prominence of Pairing in Inclusive (p, 2p) and (p, pn) Cross Sections from Neutron-Rich Nuclei

NUCLEAR REACTIONS 1H(96Kr, np)95Kr, E ∼ 250 MeV/nucleon; analyzed available data for fifty-five inclusive single nucleon-removal σ; deduced systematically higher cross sections are found for proton removal from nuclei with an even number of protons as compared to odd-proton number projectiles for a given neutron separation energy.

doi: 10.1103/PhysRevLett.122.162503
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2019TA10      Nature(London) 569, 53 (2019)

R.Taniuchi, C.Santamaria, P.Doornenbal, A.Obertelli, K.Yoneda, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, J.D.Holt, T.Isobe, V.Lapoux, M.Matsushita, J.Menendez, S.Momiyama, T.Motobayashi, M.Niikura, F.Nowacki, K.Ogata, H.Otsu, T.Otsuka, C.PĂ©ron, S.Peru, A.Peyaud, E.C.Pollacco, A.Poves, J.-Y.Rousse, H.Sakurai, A.Schwenk, Y.Shiga, J.Simonis, S.R.Stroberg, S.Takeuchi, Y.Tsunoda, T.Uesaka, H.Wang, F.Browne, L.X.Chung, Z.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, C.Louchart, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, L.Olivier, S.Ota, Z.Patel, E.Sahin, C.Shand, P.-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Z.Vajta, V.Werner, J.Wu, Z.Y.Xu

78Ni revealed as a doubly magic stronghold against nuclear deformation

NUCLEAR REACTIONS 1H(79Cu, 2p), (80Zn, 3p)78Ni, E ∼ 250 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced partial σ, energy levels, J, π, magic nature. Comparison with theoretical calculations.

doi: 10.1038/s41586-019-1155-x
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2019VA03      Phys.Rev. C 99, 034306 (2019)

V.Vaquero, A.Jungclaus, P.Doornenbal, K.Wimmer, A.M.Moro, K.Ogata, T.Furumoto, S.Chen, E.Nacher, E.Sahin, Y.Shiga, D.Steppenbeck, R.Taniuchi, Z.Y.Xu, T.Ando, H.Baba, F.L.Bello Garrote, S.Franchoo, K.Hadynska-Klek, A.Kusoglu, J.Liu, T.Lokotko, S.Momiyama, T.Motobayashi, S.Nagamine, N.Nakatsuka, M.Niikura, R.Orlandi, T.Y.Saito, H.Sakurai, P.A.Soderstrom, G.M.Tveten, Zs.Vajta, M.Yalcinkaya

In-beam γ-ray spectroscopy of 136Te at relativistic energies

NUCLEAR REACTIONS C, 197Au(136Te, 136Te'), C(137Te, 136Te), E=139, 140 MeV/nucleon, [secondary 136,137Te beam from 9Be(238U, F), E=345 MeV/nucleon primary reaction]; measured Eγ, Iγ, γγ-coin, σ(θ), exclusive σ following Coulomb excitation to individual excited states using the DALI2 spectrometer array for γ detection, and the BigRIPS and ZeroDegree spectrometers for beam and product identification, respectively at RIBF-RIKEN facility. 136Te; deduced levels, J, π, B(E2) values. Comparison with theoretical predictions, and with previous experimental results. Systematics of B(E2) values for the first 2+ states in 132,134,136Te.

doi: 10.1103/PhysRevC.99.034306
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2019VA07      Phys.Lett. B 795, 356 (2019)

V.Vaquero, A.Jungclaus, J.L.Rodriguez-Sanchez, J.A.Tostevin, P.Doornenbal, K.Wimmer, S.Chen, E.Nacher, E.Sahin, Y.Shiga, D.Steppenbeck, R.Taniuchi, Z.Y.Xu, T.Ando, H.Baba, F.L.Bello Garrote, S.Franchoo, A.Gargano, K.Hadynska-Klek, A.Kusoglu, J.Liu, T.Lokotko, S.Momiyama, T.Motobayashi, S.Nagamine, N.Nakatsuka, M.Niikura, R.Orlandi, T.Saito, H.Sakurai, P.A.Soderstrom, G.M.Tveten, Zs.Vajta, M.Yalcinkaya

Inclusive cross sections for one- and multi-nucleon removal from Sn, Sb, and Te projectiles beyond the N=82 shell closure

NUCLEAR REACTIONS C(136Te, n), (136Te, 2n), (136Te, 3n), (136Te, 4n), (136Te, 5n), (136Te, 6n), (134Sn, p), E=138-145 MeV/nucleon; measured reaction products; deduced σ. Comparison with two different versions of the Liege intranuclear cascade model (INCL).

doi: 10.1016/j.physletb.2019.06.035
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2019WI08      Phys.Lett. B 795, 266 (2019)

K.Wimmer, P.Doornenbal, W.Korten, P.Aguilera, A.Algora, T.Ando, T.Arici, H.Baba, B.Blank, A.Boso, S.Chen, A.Corsi, P.Davies, G.de Angelis, G.de France, D.T.Doherty, J.Gerl, R.Gernhauser, D.G.Jenkins, S.Koyama, T.Motobayashi, S.Nagamine, M.Niikura, A.Obertelli, D.Lubos, B.Rubio, E.Sahin, T.Y.Saito, H.Sakurai, L.Sinclair, D.Steppenbeck, R.Taniuchi, R.Wadsworth, M.Zielinska

Discovery of 68Br in secondary reactions of radioactive beams

NUCLEAR REACTIONS 9Be(70Kr, X), (71Kr, X), (72Kr, X), (70Br, X)68Br, E=170 MeV/nucleon; measured reaction products; deduced yields, σ, T1/2.

doi: 10.1016/j.physletb.2019.06.014
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2018CO06      Phys.Rev. C 97, 044315 (2018)

M.L.Cortes, P.Doornenbal, M.Dupuis, S.M.Lenzi, F.Nowacki, A.Obertelli, S.Peru, N.Pietralla, V.Werner, K.Wimmer, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, C.Louchart, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, F.Browne, L.X.Chung, Zs.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, L.Olivier, S.Ota, Z.Patel, E.Sahin, C.M.Shand, P-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Zs.Vajta, J.Wu, Z.Xu

Inelastic scattering of neutron-rich Ni and Zn isotopes off a proton target

NUCLEAR REACTIONS 1H(72Ni, p'), E=271.0 MeV/nucleon; 1H(74Ni, p'), E=263.5 MeV/nucleon; 1H(76Zn, p'), E=275.5 MeV/nucleon; 1H(80Zn, p'), E=263.4 MeV/nucleon, [secondary 72,74Ni, 76,80Zn beams from 9Be(238U, X), E=345 MeV/nucleon primary reaction, followed by separation of fragments using BigRIPS separator]; measured reaction products, yields, Eγ, Iγ, particles, (particle)γ-coin, angular integrated proton inelastic scattering σ using MINOS target device, DALI2 array for γ detection and ZeroDegree spectrometer for particles at RIBF-RIKEN facility. 72,74Ni, 76,80Zn; deduced first 2+ and 4+ levels, and second 2+ levels in 72,74Ni; analyzed B(E2) values and matrix elements for the first 2+ states. Comparison with shell-model calculations, and with previous measurements. Systematics of β2 deformation parameters in 62Zn to 80Zn, and 54Ni to 74Ni isotopes. Comparison of experimental σ for inelastic scattering with calculations using Jeukenne-Lejeune-Mahaux (JLM) folding model with quasiparticle random-phase approximation (QRPA). 58Ni(p, p), E=295, 250, 333 MeV; 58Ni(p, p'), E=178 MeV; analyzed σ(θ) data using the JLM reaction model and KD02 potential.

doi: 10.1103/PhysRevC.97.044315
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2018CO07      Phys.Rev. C 97, 044321 (2018)

A.Corsi, A.Obertelli, P.Doornenbal, F.Nowacki, H.Sagawa, Y.Tanimura, N.Aoi, H.Baba, P.Bednarczyk, S.Boissinot, M.Ciemala, A.Gillibert, T.Isobe, A.Jungclaus, V.Lapoux, J.Lee, K.Matsui, M.Matsushita, T.Motobayashi, D.Nishimura, S.Ota, E.Pollacco, H.Sakurai, C.Santamaria, Y.Shiga, D.Sohler, D.Steppenbeck, S.Takeuchi, R.Taniuchi, H.Wang

Spectroscopy of nuclei around 100Sn populated via two-neutron knockout reactions

NUCLEAR REACTIONS 1H, C(104Sn, 2n), E=150 MeV/nucleon; 1H, C(102Cd, 2n), E=144 MeV/nucleon, [secondary 104Sn and 102Cd beams from 9Be(124Xe, X), E=345 MeV/nucleon primary reaction, followed by separation of fragments using BigRIPS separator]; 1H, C(112Sn, 2n), E=170 MeV/nucleon; measured Eγ, Iγ, particles, (particle)γ-coin, two-neutron knockout σ using carbon and CH2 targets, DALI2 array for γ detection and ZeroDegree spectrometer for particles at RIBF-RIKEN facility. 100Cd, 102,110Sn; deduced first and second 2+ levels in 102Sn, first 2+ and 4+ levels in 100Cd, and first three excited states in 110Sn. Comparison with shell-model calculations, and with previous measurements. Systematics of energies of first and second 2+ states in 102Sn to 120Sn isotopes.

doi: 10.1103/PhysRevC.97.044321
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2018LI46      Phys.Lett. B 784, 392 (2018)

X.Y.Liu, Z.Liu, B.Ding, P.Doornenbal, A.Obertelli, S.M.Lenzi, P.M.Walker, L.X.Chung, B.D.Linh, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, F.Nowacki, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, Y.H.Lam, T.H.Huang, M.D.Sun, W.Q.Zhang, H.Y.Lu, D.S.Hou, F.Browne, Zs.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, C.Louchart, L.Olivier, S.Ota, Z.Patel, E.Sahin, C.Santamaria, C.Shand, P.-A.Soderstrom, G.L.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Zs.Vajta, V.Werner, J.Wu, Z.Xu, X.H.Zhou, Y.H.Zhang, H.S.Xu, F.S.Zhang

Spectroscopy of 65, 6725Mn: Strong coupling in the N=40 "island of inversion"

NUCLEAR REACTIONS 1H(68Fe, X)63Mn/65Mn/67Mn, E=260 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π. Comparison with shell model predictions.

doi: 10.1016/j.physletb.2018.06.067
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2018VA08      Phys.Lett. B 782, 99 (2018)

Zs.Vajta, D.Sohler, Y.Shiga, K.Yoneda, K.Sieja, D.Steppenbeck, Zs.Dombradi, N.Aoi, P.Doornenbal, J.Lee, H.Liu, M.Matsushita, S.Takeuchi, H.Wang, H.Baba, P.Bednarczyk, Zs.Fulop, S.Go, T.Hashimoto, E.Ideguchi, K.Ieki, K.Kobayashi, Y.Kondo, R.Minakata, T.Motobayashi, D.Nishimura, H.Otsu, H.Sakurai, Y.Sun, A.Tamaii, R.Tanaka, Z.Tian, T.Yamamoto, X.Yang, Z.Yang, Y.Ye, R.Yokoyama, J.Zenihiro

Proton single particle energies next to 78Ni: Spectroscopy of 77Cu via single proton knock-out reaction

NUCLEAR REACTIONS 9Be(78Zn, p)77Cu, E=240 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, level scheme. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2018.05.023
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2018WI08      Phys.Lett. B 785, 441 (2018)

K.Wimmer, W.Korten, T.Arici, P.Doornenbal, P.Aguilera, A.Algora, T.Ando, H.Baba, B.Blank, A.Boso, S.Chen, A.Corsi, P.Davies, G.de Angelis, G.de France, D.T.Doherty, J.Gerl, R.Gernhauser, D.Jenkins, S.Koyama, T.Motobayashi, S.Nagamine, M.Niikura, A.Obertelli, D.Lubos, B.Rubio, E.Sahin, T.Y.Saito, H.Sakurai, L.Sinclair, D.Steppenbeck, R.Taniuchi, R.Wadsworth, M.Zielinska

Shape coexistence and isospin symmetry in A=70 nuclei: Spectroscopy of the Tz = 1 nucleus 70Kr

NUCLEAR REACTIONS 9Be(78Kr, X)70Kr/71Kr/72Kr, 9Be(71Br, X)70Se, E=345 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level scheme, J, π, γ-ray energies and intensities, σ, shape coexistence. Comparison with available data.

doi: 10.1016/j.physletb.2018.07.067
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2018WI10      Phys.Rev. C 98, 064313 (2018)

O.Wieland, A.Bracco, F.Camera, R.Avigo, H.Baba, N.Nakatsuka, T.Aumann, S.R.Banerjee, G.Benzoni, K.Boretzky, C.Caesar, S.Ceruti, S.Chen, F.C.L.Crespi, V.Derya, P.Doornenbal, N.Fukuda, A.Giaz, K.Ieki, N.Kobayashi, Y.Kondo, S.Koyama, T.Kubo, M.Matsushita, B.Million, T.Motobayashi, T.Nakamura, M.Nishimura, H.Otsu, T.Ozaki, A.T.Saito, H.Sakurai, H.Scheit, F.Schindler, P.Schrock, Y.Shiga, M.Shikata, S.Shimoura, D.Steppenbeck, T.Sumikama, S.Takeuchi, R.Taniuchi, Y.Togano, J.Tscheuschner, J.Tsubota, H.Wang, K.Wimmer, K.Yoneda

Low-lying dipole response in the unstable 70Ni nucleus

NUCLEAR REACTIONS 197Au(70Ni, 70Ni'), E=260 MeV/nucleon, [secondary 70Ni beam from 9Be(238U, F), E=345 MeV/nucleon primary reaction and using the BigRIPS magnetic separator for 70Ni ions]; measured reaction products, Eγ, Iγ, Coulomb excitation yields using HECTOR+ and DALI2 arrays at RIBF-RIKEN. 70Ni; deduced 1- pygmy dipole resonances (PDR), B(E1) strengths for 1- states, energy weighted sum rule (EWSR), and B(E2) for the first 2+ state. Comparison with data for 68Ni, and with theoretical predictions.

doi: 10.1103/PhysRevC.98.064313
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2017CH18      Phys.Rev. C 95, 041302 (2017)

S.Chen, P.Doornenbal, A.Obertelli, T.R.Rodriguez, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.Caroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.R.Nita, C.Nobs, L.Olivier, R.Orlandi, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

Low-lying structure and shape evolution in neutron-rich Se isotopes

NUCLEAR REACTIONS 1H(89Se, np), (91Br, 2p), (94Br, n2p), (95Br, 2p), E=270 MeV/nucleon, [secondary 89Se, 91,94,95Br beams from 9Be(238U, F), E=345 MeV/nucleon using BigRIPS fragment separator at RIBF-RIKEN facility]; measured particle spectra using time projection chamber (TPC) of the MINOS ensemble, and Doppler-corrected gamma spectra, Eγ, Iγ, γγ-coin using DALI2 array of 186 NaI(Tl) detectors. 88,90,92,94Se; deduced levels, J, π, triaxiality; calculated potential energy surfaces for g.s., first and second 2+ states. Comparison with self-consistent beyond-mean-field calculations using Gogny D1S interaction. Systematics of first 2+ states and E(first 4+)/E(first 2+) for N=50-60 even-A Zr, Sr, Kr, and Se isotopes.

doi: 10.1103/PhysRevC.95.041302
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2017DO05      Phys.Rev. C 95, 041301 (2017)

P.Doornenbal, H.Scheit, S.Takeuchi, Y.Utsuno, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, E.Ideguchi, N.Kobayashi, Y.Kondo, J.Lee, S.Michimasa, T.Motobayashi, T.Otsuka, H.Sakurai, M.Takechi, Y.Togano, K.Yoneda

Low-Z shore of the "island of inversion" and the reduced neutron magicity toward 28O

NUCLEAR REACTIONS 1H, C(30Na, 29F), (30Na, 27F), E=228 MeV/nucleon, [secondary 30Na beam from 9Be(48Ca, X), E=345 MeV/nucleon primary reaction at RIBF-RIKEN facility]; measured reaction residues 27,29F using BigRIPS and ZeroDegree spectrometers, Eγ, Iγ, (27F)γ- and (29F)γ-coin using DALI2 array for γ detection. One-proton and one-proton-two-neutron removal reactions on carbon and polyethylene targets. 27,29F; deduced levels, J, π, binding energy. Comparison with calculations using the SDPF-M interaction, and correlation of 29F and 28O level spectra.

doi: 10.1103/PhysRevC.95.041301
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2017FL03      Phys.Rev.Lett. 118, 242501 (2017)

F.Flavigny, P.Doornenbal, A.Obertelli, J.-P.Delaroche, M.Girod, J.Libert, T.R.Rodriguez, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.Bruce, R.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, R.Orlandi, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.A.Soderstrom, I.Stefan, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

Shape Evolution in Neutron-Rich Krypton Isotopes Beyond N=60: First Spectroscopy of 98, 100Kr

NUCLEAR REACTIONS 1H(99Rb, 2p)98Kr, E=260 MeV/nucleon; 1H(101Rb, 2p)100Kr, E=170 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced energy levels, J, π. Comparison with state-of-the-art beyond-mean-field calculations using the Gogny D1S interaction.

doi: 10.1103/PhysRevLett.118.242501
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2017LE08      Phys.Rev. C 96, 011301 (2017)

M.Lettmann, V.Werner, N.Pietralla, P.Doornenbal, A.Obertelli, T.R.Rodriguez, K.Sieja, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.Bruce, R.J.Caroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, V.Vaquero, K.Wimmer, Z.Xu

Triaxiality of neutron-rich 84, 86, 88Ge from low-energy nuclear spectra

NUCLEAR REACTIONS 1H(85Ge, np), (87As, 2p), (89As, 2p), E≈270 MeV/nucleon reduced to ≈70 MeV/nucleon through the target, [85Ge, 87As and 89As secondary beams from 9Be(238U, F), E=345 MeV primary reaction at RIBF-RIKEN facility]; measured yields of fission fragments using time-of-flight method and BigRIPS magnetic spectrometer, particle spectra using ZeroDegree spectrometer and Doppler-corrected Eγ, Iγ, γγ-coin using DALI2 array of NaI detectors. 84,86,88Ge; deduced levels, J, π. Systematics of energies of first 2+ and 4+ states in even-even Z=32-40, N=50-60 nuclei. 86,88Ge; calculated potential energy surfaces in (β2, γ) plane using particle number variation after projection (PN-VAP) approach. Discussed triaxiality in even-even Ge nuclei based upon the observation of a tentative 3+ state in 86Ge. Comparison with shell-model, and symmetry-conserving configuration mixing Gogny (SCCM) model.

doi: 10.1103/PhysRevC.96.011301
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2017LI07      Phys.Lett. B 767, 58 (2017)

H.N.Liu, J.Lee, P.Doornenbal, H.Scheit, S.Takeuchi, N.Aoi, K.A.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, E.Ideguchi, N.Kobayashi, Y.Kondo, G.Lee, S.Michimasa, T.Motobayashi, A.Poves, H.Sakurai, M.Takechi, Y.Togano, J.A.Tostevin, Y.Utsuno

Intruder configurations in the ground state of 30Ne

NUCLEAR REACTIONS 12C(30Ne, 29Ne'), E=228 MeV/nucleon; measured reaction products, Eγ, Iγ. 29,30Ne; deduced σ and and spectroscopic factors, J, π. Comparison with SDPF-U-MIX shell model calculations.

doi: 10.1016/j.physletb.2017.01.052
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2017MO26      Phys.Rev. C 96, 034328 (2017)

S.Momiyama, P.Doornenbal, H.Scheit, S.Takeuchi, M.Niikura, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, E.Ideguchi, M.Kimura, N.Kobayashi, Y.Kondo, J.Lee, S.Michimasa, T.Motobayashi, N.Shimizu, M.Takechi, Y.Togano, Y.Utsuno, K.Yoneda, H.Sakurai

In-beam γ-ray spectroscopy of 35Mg via knockout reactions at intermediate energies

NUCLEAR REACTIONS C(36Mg, 35Mg), E=235 MeV; C(37Al, 35Mg), E=246 MeV, [secondary 36Mg and 37Al beams from 9Be(48Ca, X), E=345 MeV/nucleon primary reaction, followed by separation using BigRIPS separator and Zero Degree spectrometer at RIBF-RIKEN facility]; measured reaction products, Eγ, Iγ, (35Mg)γ-coin, inclusive and γ-ray cross sections, parallel momentum distributions using DALI2 array of 186 large-volume NaI(Tl) crystals. 35Mg; deduced levels, J, π. Comparison with shell-model calculations using SDPF-M interaction, and with antisymmetrized molecular dynamics (AMD) model calculations using Gogny D1S force. C(36Mg, 34Mg), (36Mg, 33Mg), E=235 MeV; measured inclusive σ.

NUCLEAR STRUCTURE 35Mg; calculated levels, J, π, single-particle knockout cross sections, spectroscopic factors using shell-model with SDPF-M interaction, and antisymmetrized molecular dynamics (AMD) model with Gogny D1S force. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.034328
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2017NA07      Phys.Lett. B 768, 387 (2017)

N.Nakatsuka, H.Baba, T.Aumann, R.Avigo, S.R.Banerjee, A.Bracco, C.Caesar, F.Camera, S.Ceruti, S.Chen, V.Derya, P.Doornenbal, A.Giaz, A.Horvat, K.Ieki, T.Inakura, N.Imai, T.Kawabata, N.Kobayashi, Y.Kondo, S.Koyama, M.Kurata-Nishimura, S.Masuoka, M.Matsushita, S.Michimasa, B.Million, T.Motobayashi, T.Murakami, T.Nakamura, T.Ohnishi, H.J.Ong, S.Ota, H.Otsu, T.Ozaki, A.Saito, H.Sakurai, H.Scheit, F.Schindler, P.Schrock, Y.Shiga, M.Shikata, S.Shimoura, D.Steppenbeck, T.Sumikama, I.Syndikus, H.Takeda, S.Takeuchi, A.Tamii, R.Taniuchi, Y.Togano, J.Tscheuschner, J.Tsubota, H.Wang, O.Wieland, K.Wimmer, Y.Yamaguchi, K.Yoneda, J.Zenihiro

Observation of isoscalar and isovector dipole excitations in neutron-rich 20O

NUCLEAR REACTIONS 197Au, He(20O, 20O'), E=276 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced excited states and decay γ-ray energies, J, π, branching ratios, inelastic σ, B(E1), strength functions. Comparison with RPA calculations.

doi: 10.1016/j.physletb.2017.03.017
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2017OL07      Phys.Rev.Lett. 119, 192501 (2017)

L.Olivier, S.Franchoo, M.Niikura, Z.Vajta, D.Sohler, P.Doornenbal, A.Obertelli, Y.Tsunoda, T.Otsuka, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, F.Browne, L.X.Chung, Z.Dombradi, F.Flavigny, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, C.Louchart, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, K.Ogata, S.Ota, Z.Patel, E.Sahin, C.Shand, P.-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, V.Werner, J.Wu, Z.Xu

Persistence of the Z=28 Shell Gap Around 78Ni: First Spectroscopy of 79Cu

NUCLEAR REACTIONS 1H(80Zn, p)79Cu, E=270 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, occupation numbers, systematics. Comparison with Monte Carlo shell-model calculations.

doi: 10.1103/PhysRevLett.119.192501
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2017PA01      Phys.Rev.Lett. 118, 032501 (2017)

N.Paul, A.Corsi, A.Obertelli, P.Doornenbal, G.Authelet, H.Baba, B.Bally, M.Bender, D.Calvet, F.Chateau, S.Chen, J.-P.Delaroche, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, M.Girod, P.-H.Heenen, V.Lapoux, J.Libert, T.Motobayashi, M.Niikura, T.Otsuka, T.R.Rodriguez, J.-Y.Rousse, H.Sakurai, C.Santamaria, N.Shimizu, D.Steppenbeck, R.Taniuchi, T.Togashi, Y.Tsunoda, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, Z.Patel, Z.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, R.Orlandi, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of 110Zr

NUCLEAR REACTIONS H(113Tc, p)112Mo, (111Nb, p)110Zr, E=260 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced 2+ state energies, R4/2 energy ratio. Comparison with Monte Carlo shell model predictions.

doi: 10.1103/PhysRevLett.118.032501
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2017SH42      Phys.Lett. B 773, 492 (2017)

C.M.Shand, Zs.Podolyak, M.Gorska, P.Doornenbal, A.Obertelli, F.Nowacki, T.Otsuka, K.Sieja, J.A.Tostevin, Y.Tsunoda, G.Authelet, H.Baba, D.Calvet, A.Chateau, S.Chen, A.Corsi, A.Delbart, J.M.Gheller, A.Giganon, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, N.Paul, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, M.Sasano, Y.Shiga, D.Steppenbeck, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.J.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, Zs.Dombradi, F.Flavigny, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, A.Jungclaus, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, C.Louchart, R.Lozeva, K.Matsui, T.Miyazaki, K.Moschner, M.Nagamine, N.Nakatsuka, S.Nishimura, C.R.Nita, C.R.Nobs, L.Olivier, S.Ota, R.Orlandi, Z.Patel, P.H.Regan, M.Rudigier, E.Sahin, T.Saito, P.-A.Soderstrom, I.Stefan, T.Sumikama, D.Suzuki, Zs.Vajta, V.Vaquero, V.Werner, K.Wimmer, J.Wu, Z.Y.Xu

Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81, 82, 83, 84Zn

NUCLEAR REACTIONS H(82Ga, 2p)81Zn, (83Ga, 2p)82Zn, (84Ga, X)82Zn, (86Ga, X)83Zn, (85Ga, X)84Zn, E ∼ 270 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π; Comparison with Ni78-II, A3DA-m and PFSDG-U calculations.

doi: 10.1016/j.physletb.2017.09.001
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2017ST22      Phys.Rev. C 96, 064310 (2017)

D.Steppenbeck, S.Takeuchi, N.Aoi, P.Doornenbal, M.Matsushita, H.Wang, H.Baba, S.Go, J.D.Holt, J.Lee, K.Matsui, S.Michimasa, T.Motobayashi, D.Nishimura, T.Otsuka, H.Sakurai, Y.Shiga, P.-A.Soderstrom, S.R.Stroberg, T.Sumikama, R.Taniuchi, J.A.Tostevin, Y.Utsuno, J.J.Valiente-Dobon, K.Yoneda

Structure of 55Sc and development of the N=34 subshell closure

NUCLEAR REACTIONS 9Be(56Ti, 55Sc), (55Sc, 55Sc'), E=200 MeV/nucleon, ; [secondary 56Ti and 55Sc beams from primary 70Zn beam and using BigRIPS for fragment identification at RIBF-RIKEN facility]; measured Eγ, Iγ, γγ-coin using DALI2 array of scintillation detectors for γ radiation, and ZeroDegree spectrometer for reaction products. 55Sc; deduced levels. Comparison with large-scale shell-model calculations in sdpf model space, and with ab initio shell-model calculations from the in-medium similarity renormalization group.

NUCLEAR STRUCTURE 55Sc; calculated levels, J, π, σ, spectroscopic factors for one-proton removal reaction; discussed configurations. Large-scale shell-model with SDPF-MUr effective interaction, and ab initio many-body method with the valence-space formulation of the in-medium similarity renormalization group (VS-IM-SRG). Comparison with experimental data, and proton-removal reaction treated with the eikonal model.

doi: 10.1103/PhysRevC.96.064310
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2017VA09      Phys.Rev.Lett. 118, 202502 (2017)

V.Vaquero, A.Jungclaus, P.Doornenbal, K.Wimmer, A.Gargano, J.A.Tostevin, S.Chen, E.Nacher, E.Sahin, Y.Shiga, D.Steppenbeck, R.Taniuchi, Z.Y.Xu, T.Ando, H.Baba, F.L.Bello Garrote, S.Franchoo, K.Hadynska-Klek, A.Kusoglu, J.Liu, T.Lokotko, S.Momiyama, T.Motobayashi, S.Nagamine, N.Nakatsuka, M.Niikura, R.Orlandi, T.Saito, H.Sakurai, P.A.Soderstrom, G.M.Tveten, Zs.Vajta, M.Yalcinkaya

Gamma Decay of Unbound Neutron-Hole States in 133Sn

NUCLEAR REACTIONS C(134Sn, X)133Sn, E=165 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced neutron removal σ, energy levels, J, π.

doi: 10.1103/PhysRevLett.118.202502
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2016DO03      Phys.Rev. C 93, 044306 (2016)

P.Doornenbal, H.Scheit, S.Takeuchi, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, E.Ideguchi, N.Kobayashi, Y.Kondo, J.Lee, S.Michimasa, T.Motobayashi, A.Poves, H.Sakurai, M.Takechi, Y.Togano, K.Yoneda

Mapping the deformation in the "island of inversion": Inelastic scattering of 30Ne and 36Mg at intermediate energies

NUCLEAR REACTIONS Pb(30Ne, 30Ne'), E=232 MeV/nucleon; C(30Ne, 30Ne'), E=228 MeV/nucleon; Pb(36Mg, 36Mg'), E=223 MeV/nucleon; C(36Mg, 36Mg'), E=218 MeV/nucleon, [secondary 30Ne and 36Mg beams from 9Be(48Ca, X), E=345 MeV/nucleon primary reaction using BigRIPS fragment separator at RIKEN facility]; measured particle spectra by Bρ-ΔE-TOF method using BigRIPS separator and ZeroDegree spectrometer, Eγ, Iγ, (particle)γ-coin using DALI2 array for γ detection, cross sections for the first 2+ states. 30Ne, 36Mg; deduced first 2+ levels, deformation lengths and B(E2) for the first 2+ states. Coulomb and nuclear excitations. Discussed neutron excitations across the N=20 shell for 30Ne. Comparisons with state-of-the-art shell-model calculations. Systematics of energies of first 2+ and 4+ states, and B(E2) values for the first 2+ states in N=20 isotones, and 26,28,30,32,34Ne, 28,30,32,34,36,38,40Mg, together with comparison of experimental and theoretical values from shell-model calculations.

doi: 10.1103/PhysRevC.93.044306
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2016LE21      Prog.Theor.Exp.Phys. 2016, 083D01 (2016)

J.Lee, H.Liu, P.Doornenbal, M.Kimura, K.Minomo, K.Ogata, Y.Utsuno, N.Aoi, K.Li, M.Matsushita, H.Scheit, D.Steppenbeck, S.Takeuchi, H.Wang, H.Baba, E.Ideguchi, N.Kobayashi, Y.Kondo, S.Michimasa, T.Motobayashi, H.Sakurai, M.Takechi, Y.Togano

Asymmetry dependence of reduction factors from single-nucleon knockout of 30Ne at ∼ 230 MeV/nucleon

NUCLEAR STRUCTURE 29F, 29,30Ne; calculated structure, energy, spectroscopic factor for proton states in 29F and neutron ones in 29Ne using shell model in sd-pf model space and using AMD (Antisymmetrized Molelcular Dynamics).

NUCLEAR REACTIONS 12C(30Ne, 29F), (30Ne, 29Ne), E≈230 MeV/nucleon; measured 29F, 30Ne residues using ZeroDegree Spectrometer, Eγ, Iγ using detector array DALI2 of 186 NaI(Tl) scintillators; calculated inclusive deeply-bound one-nucleon knock-out σ using eikonal theory with wave functions, densities, spectroscopic factors from shell model and from AMD; deduced σ dependence on separation energy asymmetry and on nuclear radius parameter. Compared with data.

doi: 10.1093/ptep/ptw096
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2016SH07      Phys.Rev. C 93, 024320 (2016)

Y.Shiga, K.Yoneda, D.Steppenbeck, N.Aoi, P.Doornenbal, J.Lee, H.Liu, M.Matsushita, S.Takeuchi, H.Wang, H.Baba, P.Bednarczyk, Zs.Dombradi, Zs.Fulop, S.Go, T.Hashimoto, M.Honma, E.Ideguchi, K.Ieki, K.Kobayashi, Y.Kondo, R.Minakata, T.Motobayashi, D.Nishimura, T.Otsuka, H.Otsu, H.Sakurai, N.Shimizu, D.Sohler, Y.Sun, A.Tamii, R.Tanaka, Z.Tian, Y.Tsunoda, Zs.Vajta, T.Yamamoto, X.Yang, Z.Yang, Y.Ye, R.Yokoyama, J.Zenihiro

Investigating nuclear shell structure in the vicinity of 78Ni: Low-lying excited states in the neutron-rich isotopes 80, 82Zn

NUCLEAR REACTIONS 9Be(80Zn, 80Zn'), (81Ga, 80Zn), (80Ga, 78Zn), (83Ge, 82Ge), (83As, 82Ge), E=250 MeV/nucleon, [secondary 80Zn, 80,81Ga, 82,83Ge, 83As and other beams from 9Be(238U, X), E=345 MeV/nucleon primary reaction]; measured yields of reaction products, Eγ, Iγ, Doppler corrected γ rays, γγ-coin, level half-lives by line-shape analysis using BigRIPS separator, ZeroDegree spectrometer for particle identification and detection, and DALI2 array of NaI(Tl) detectors for γ rays at RIBF-RIKEN facility. 76,78,80,82Zn, 82Ge; deduced levels, J, π, B(E2), configurations. Comparison with previous experimental results, and with calculations using Monte Carlo shell-model (MCSM) and shell-model with JUN45 interaction. Systematics of energies of first 2+ and 4+ states and E(4+/2+) ratios in 74,76,78,80,82Zn, 82Ge, 84Se, 86Kr.

doi: 10.1103/PhysRevC.93.024320
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2016WA28      Phys.Rev. C 94, 051301 (2016)

H.Wang, N.Aoi, S.Takeuchi, M.Matsushita, T.Motobayashi, D.Steppenbeck, K.Yoneda, H.Baba, Zs.Dombradi, K.Kobayashi, Y.Kondo, J.Lee, H.Liu, R.Minakata, D.Nishimura, H.Otsu, H.Sakurai, D.Sohler, Y.Sun, Z.Tian, R.Tanaka, Zs.Vajta, Z.Yang, T.Yamamoto, Y.Ye, R.Yokoyama

First spectroscopic information from even-even nuclei in the region "southeast" of 132Sn: Neutron-excitation dominance of the 2+1 state in 132Cd

NUCLEAR REACTIONS 9Be(134Sn, 132Cd), E not given, [secondary 134Sn beam from W(238U, F), E=345 MeV/nucleon primary reaction and using BigRIPS fragment separator]; measured reaction residues through identification by TOF, Bρ, ΔE, and total kinetic energy (TKE) using the ZeroDegree spectrometer, Eγ, Iγ, (particle)γ-coin using DALI2 array at RIBF-RIKEN facility; 132Cd; deduced levels, J, π, proton-neutron configuration mixing in the first 2+ state. Comparison with mean-field calculations. Systematics of experimental and theoretical first 2+ energies in N=84, Z=48-66, Z=48, N=50-82, and Z=52, N=54-86 nuclei.

doi: 10.1103/PhysRevC.94.051301
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2015CO03      Phys.Lett. B 743, 451 (2015)

A.Corsi, S.Boissinot, A.Obertelli, P.Doornenbal, M.Dupuis, F.Lechaftois, M.Matsushita, S.Peru, S.Takeuchi, H.Wang, N.Aoi, H.Baba, P.Bednarczyk, M.Ciemala, A.Gillibert, T.Isobe, A.Jungclaus, V.Lapoux, J.Lee, M.Martini, K.Matsui, T.Motobayashi, D.Nishimura, S.Ota, E.Pollacco, H.Sakurai, C.Santamaria, Y.Shiga, D.Sohler, D.Steppenbeck, R.Taniuchi

Neutron-driven collectivity in light tin isotopes: Proton inelastic scattering from 104Sn

NUCLEAR REACTIONS 1H(104Sn, 104Sn'), E=150 MeV/nucleon; measured reaction products, Eγ, Iγ. 104Sn; deduced σ(θ), energy levels, J, π. QRPA with the D1M Gogny interaction calculations.

doi: 10.1016/j.physletb.2015.03.018
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2015SA43      Phys.Rev.Lett. 115, 192501 (2015)

C.Santamaria, C.Louchart, A.Obertelli, V.Werner, P.Doornenbal, F.Nowacki, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, F.Browne, L.X.Chung, Zs.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, L.Olivier, S.Ota, Z.Patel, N.Pietralla, E.Sahin, C.Shand, P.-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Zs.Vajta, J.Wu, Z.Xu

Extension of the N = 40 Island of Inversion towards N = 50: Spectroscopy of 66Cr, 70, 72Fe

NUCLEAR REACTIONS 1H(67Mn, 2p), E= ∼ 200 MeV/nucleon; 1H(71Co, 2p), (73Co, 2p), E ∼ 260 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level energies, J, π. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.115.192501
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2015ST10      Phys.Rev.Lett. 114, 252501 (2015)

D.Steppenbeck, S.Takeuchi, N.Aoi, P.Doornenbal, M.Matsushita, H.Wang, Y.Utsuno, H.Baba, S.Go, J.Lee, K.Matsui, S.Michimasa, T.Motobayashi, D.Nishimura, T.Otsuka, H.Sakurai, Y.Shiga, N.Shimizu, P.-A.Soderstrom, T.Sumikama, R.Taniuchi, J.J.Valiente-Dobon, K.Yoneda

Low-Lying Structure of 50Ar and the N=32 Subshell Closure

NUCLEAR REACTIONS 9Be(54Ca, X), (55Sc, X), (56Ti, X)50Ar, E=220 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level energy, J, π. Comparison with large-scale shell-model calculations performed in the sdpf model space using the SDPF-MU effective interaction.

doi: 10.1103/PhysRevLett.114.252501
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2014CR02      Phys.Rev. C 89, 041303 (2014)

H.L.Crawford, P.Fallon, A.O.Macchiavelli, R.M.Clark, B.A.Brown, J.A.Tostevin, D.Bazin, N.Aoi, P.Doornenbal, M.Matsushita, H.Scheit, D.Steppenbeck, S.Takeuchi, H.Baba, C.M.Campbell, M.Cromaz, E.Ideguchi, N.Kobayashi, Y.Kondo, G.Lee, I.Y.Lee, J.Lee, K.Li, S.Michimasa, T.Motobayashi, T.Nakamura, S.Ota, S.Paschalis, M.Petri, T.Sako, H.Sakurai, S.Shimoura, M.Takechi, Y.Togano, H.Wang, K.Yoneda

Shell and shape evolution at N = 28: The 40Mg ground state

NUCLEAR REACTIONS C(42Si, 40Mg), [42Si secondary beam from 9Be(48Ca, X), E=345 MeV/nucleon], E=238 MeV/nucleon; measured reaction products, inclusive σ for the production of 40Mg through two-proton knockout using BigRIPS and ZDS spectrometers at RIBF-RIKEN facility. 40Mg; deduced σ for ground state; calculated levels, J, π, σ, probabilities of the prolate contributions in 42Si and 40Mg ground-state wave functions using SDPF-MU and SDPFU-Si shell-models with eikonal reaction theory.

doi: 10.1103/PhysRevC.89.041303
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2014DO05      Prog.Theor.Exp.Phys. 2014, 053D01 (2014)

P.Doornenbal, H.Scheit, S.Takeuchi, Y.Utsuno, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, E.Ideguchi, N.Kobayashi, Y.Kondo, J.Lee, S.Michimasa, T.Motobayashi, T.Otsuka, H.Sakurai, M.Takechi, Y.Togano, K.Yoneda

Rotational level structure of sodium isotopes inside the "island of inversion"

NUCLEAR REACTIONS H, C(36Mg, X)33Na/34Na/35Na, E=236 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2), B(M1). Shell model calculations, comparison with systematics and available data.

doi: 10.1093/ptep/ptu057
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2014DO19      Phys.Rev. C 90, 061302 (2014)

P.Doornenbal, S.Takeuchi, N.Aoi, M.Matsushita, A.Obertelli, D.Steppenbeck, H.Wang, L.Audirac, H.Baba, P.Bednarczyk, S.Boissinot, M.Ciemala, A.Corsi, T.Furumoto, T.Isobe, A.Jungclaus, V.Lapoux, J.Lee, K.Matsui, T.Motobayashi, D.Nishimura, S.Ota, E.C.Pollacco, H.Sakurai, C.Santamaria, Y.Shiga, D.Sohler, R.Taniuchi

Intermediate-energy Coulomb excitation of 104Sn: Moderate E2 strength decrease approaching 100Sn

NUCLEAR REACTIONS C, Pb(104Sn, 104Sn'), E=131 MeV/nucleon; C, Pb(112Sn, 112Sn'), E=154 MeV/nucleon, [secondary 104,112Sn beams from 9Be(124Xe, X), E=345 MeV/nucleon primary reaction]; measured Eγ, Iγ, scattered 104,112Sn spectra, σ(θ) for particles, inelastic cross sections for population of first 2+ states through intermediate-energy Coulomb excitation using DALI2 array for γ rays, BigRIPS and ZeroDegree spectrometers for reaction products at RIKEN facility. 104Sn; deduced levels, J, π, B(E2) for first 2+ state relative to that for 112Sn. Comparison with shell-model calculations, and with previous experimental results. Systematics of experimental and theoretical B(E2) values for first 2+ states in A=104-130 even-A Sn isotopes.

doi: 10.1103/PhysRevC.90.061302
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2014WA05      Prog.Theor.Exp.Phys. 2014, 023D02 (2014)

H.Wang, N.Aoi, S.Takeuchi, M.Matsushita, P.Doornenbal, T.Motobayashi, D.Steppenbeck, K.Yoneda, H.Baba, Z.Dombradi, K.Kobayashi, Y.Kondo, J.Lee, H.-N.Liu, R.Minakata, D.Nishimura, H.Otsu, H.Sakurai, D.Sohler, Y.-L.Sun, Z.-Y.Tian, R.Tanaka, Z.Vajta, Z.-H.Yang, T.Yamamoto, Y.-L.Ye, R.Yokoyama

Structure of 136Sn and the Z=50 magicity

NUCLEAR REACTIONS 9Be(137Sb, X)136Sn, E=240 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced first 2+ energy level, J, π. Comparison with available data.

doi: 10.1093/ptep/ptu003
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2013AU02      Phys.Rev. C 88, 041602 (2013)

L.Audirac, A.Obertelli, P.Doornenbal, D.Mancusi, S.Takeuchi, N.Aoi, H.Baba, S.Boissinot, A.Boudard, A.Corsi, A.Gillibert, T.Isobe, A.Jungclaus, V.Lapoux, J.Lee, S.Leray, K.Matsui, M.Matsushita, T.Motobayashi, D.Nishimura, S.Ota, E.C.Pollacco, G.Potel, H.Sakurai, C.Santamaria, Y.Shiga, D.Sohler, D.Steppenbeck, R.Taniuchi, H.Wang

Evaporation-cost dependence in heavy-ion fragmentation

NUCLEAR REACTIONS 1H, 12C(104Sn, X)100Sn/101Sn/102Sn/103Sn/104Sn, E=155 MeV/nucleon; 1H, 12C(112Sn, X)105Sn/106Sn/107Sn/108Sn/109Sn/110Sn/111Sn/112Sn/, E=173 MeV/nucleon, [secondary 104,112Sn beams from 9Be(124Xe, X) primary reaction]; measured particle spectra, TOF, σ for multi-nucleon removal using BigRIPS and ZDS spectrometers at RIBF-RIKEN facility. Comparison with previous experimental data, and with cascade and deexcitation model (INCL-ABLA) calculations.

doi: 10.1103/PhysRevC.88.041602
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2013DO22      Phys.Rev.Lett. 111, 212502 (2013)

P.Doornenbal, H.Scheit, S.Takeuchi, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, H.Crawford, C.R.Hoffman, R.Hughes, E.Ideguchi, N.Kobayashi, Y. Kondo, J.Lee, S.Michimasa, T.Motobayashi, H.Sakurai, M.Takechi, Y.Togano, R.Winkler, K.Yoneda

In-Beam γ-Ray Spectroscopy of 34, 36, 38Mg: Merging the N=20 and N=28 Shell Quenching

NUCLEAR REACTIONS Be(48Ca, X)37Al/39Al/40Si, E=345 MeV/nucleon; C(40Si, 38Mg), E=226 MeV/nucleon; C(39Al, 38Mg), E=219 MeV/nucleon; measured reaction products, Eγ, Iγ. 34,36,38Mg; deduced level energies, J, π, E(4+)/E(2+) ratios. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.111.212502
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2013ST15      J.Phys.:Conf.Ser. 445, 012012 (2013)

D.Steppenbeck, S.Takeuchi, N.Aoi, P.Doornenbal, J.Lee, M.Matsushita, H.Wang, H.Baba, N.Fukuda, S.Go, M.Honma, K.Matsui, S.Michimasa, T.Motobayashi, D.Nishimura, T.Otsuka, H.Sakurai, Y.Shiga, P.-A.Soderstrom, T.Sumikama, H.Suzuki, R.Taniuchi, Y.Utsuno, J.J.Valiente-Dobon, K.Yoneda

Investigating the strength of the N = 34 subshell closure in 54Ca

NUCLEAR REACTIONS 9Be(55Sc, X), (56Ti, X), E=345 MeV/nucleon; measured in-beam Iγ, Eγ, (fragment)γ-coin. 53,54Ca deduced γ transitions, E(2+), E(3-). Compared with shell-model predictions and with data on other Ca isotopes.

doi: 10.1088/1742-6596/445/1/012012
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2013ST20      Nature(London) 502, 207 (2013)

D.Steppenbeck, S.Takeuchi, N.Aoi, P.Doornenbal, M.Matsushita, H.Wang, H.Baba, N.Fukuda, S.Go, M.Honma, J.Lee, K.Matsui, S.Michimasa, T.Motobayashi, D.Nishimura, T.Otsuka, H.Sakurai, Y.Shiga, P.-A.Soderstrom, T.Sumikama, H.Suzuki, R.Taniuchi, Y.Utsuno, J.J.Valiente-Dobon, K.Yoneda

Evidence for a new nuclear 'magic number' from the level structure of 54Ca

NUCLEAR REACTIONS Be(55Sc, p), (55Sc, np), (56Ti, 2p), (56Ti, n2p), E =345 MeV/nucleon; measured reaction products, Eγ, Iγ. 53,54Ca; deduced level energies, J, π. Comparison with shell model calculations using the modified GXPF1B Hamiltonian.

doi: 10.1038/nature12522
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2013WA13      Chin.Phys.Lett. 30, 042501 (2013)

H.Wang, N.Aoi, S.Takeuchi, M.Matsushita, P.Doornenbal, T.Motobayashi, D.Steppenbeck, K.Yoneda, K.Kobayashi, J.Lee, H.-N.Liu, Y.Kondo, R.Yokoyama, H.Sakurai, Y.-L.Ye

Observation of New Isotope 131Ag via the Two-Step Fragmentation Technique

NUCLEAR REACTIONS 9Be(134Sn, X)128Ag/129Ag/130Ag/131Ag, E=230 MeV/nucleon; W(238U, X)134Sn, E=345 MeV/nucleon; measured reaction products; deduced first observation of 131Ag.

doi: 10.1088/0256-307X/30/4/042501
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2013WA28      Phys.Rev. C 88, 054318 (2013)

H.Wang, N.Aoi, S.Takeuchi, M.Matsushita, P.Doornenbal, T.Motobayashi, D.Steppenbeck, K.Yoneda, H.Baba, L.Caceres, Zs.Dombradi, K.Kobayashi, Y.Kondo, J.Lee, K.Li, H.Liu, R.Minakata, D.Nishimura, H.Otsu, S.Sakaguchi, H.Sakurai, H.Scheit, D.Sohler, Y.Sun, Z.Tian, R.Tanaka, Y.Togano, Zs.Vajta, Z.Yang, T.Yamamoto, Y.Ye, R.Yokoyama

Collectivity evolution in the neutron-rich Pd isotopes toward the N=82 shell closure

NUCLEAR REACTIONS W(238U, X)132Sn/133Sn, E=345 MeV/nucleon; 9Be(132Sn, X), (133Sn, X)120Pd/122Pd/124Pd/126Pd, E=230 MeV/nucleon; measured mass-to-charge ratio A/Q spectrum by energy loss, TOF and magnetic rigidity correlations using BigRIPS separator and ZeroDegree spectrometer at RIBF-RIKEN facility; measured Eγ, Iγ, (particle)γ-coin using DALI2 array of scintillation detectors. 120,122,124,126Pd; deduced first 2+ and 4+ levels. Systematics of E(first 4+)/E(first 2+) ratios for N(even)=50-82 Pd, Xe and Cd isotopes, and comparison with IBM-2 calculations.

doi: 10.1103/PhysRevC.88.054318
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2012ST06      Phys.Rev. C 85, 044316 (2012)

D.Steppenbeck, R.V.F.Janssens, S.J.Freeman, M.P.Carpenter, P.Chowdhury, A.N.Deacon, M.Honma, H.Jin, T.Lauritsen, C.J.Lister, J.Meng, J.Peng, D.Seweryniak, J.F.Smith, Y.Sun, S.L.Tabor, B.J.Varley, Y.-C.Yang, S.Q.Zhang, P.W.Zhao, S.Zhu

Magnetic rotation and quasicollective structures in 58Fe: Influence of the νγ9/2 orbital

NUCLEAR REACTIONS 48Ca(13C, 3n), (14C, 4n), E=130 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), DCO ratios using Gammasphere array at ATLAS, ANL facility. 58Fe; deduced high-spin levels, J, π, multipolarity, bands, magnetic rotational bands, alignment plots, quasicollective structures, configurations. Comparison with shell model calculations, and with self-consistent tilted-axis-cranking calculations within relativistic mean-field theory.

NUCLEAR STRUCTURE 58Fe; calculated levels, J, π. Shell-model calculations in fp model space using GXPF1A, KB3G, and FPD6 interactions.

doi: 10.1103/PhysRevC.85.044316
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2012TA20      Phys.Rev.Lett. 109, 182501 (2012)

S.Takeuchi, M.Matsushita, N.Aoi, P.Doornenbal, K.Li, T.Motobayashi, H.Scheit, D.Steppenbeck, H.Wang, H.Baba, D.Bazin, L.Caceres, H.Crawford, P.Fallon, R.Gernhauser, J.Gibelin, S.Go, S.Grevy, C.Hinke, C.R.Hoffman, R.Hughes, E.Ideguchi, D.Jenkins, N.Kobayashi, Y.Kondo, R.Krucken, T.Le Bleis, J.Lee, G.Lee, A.Matta, S.Michimasa, T.Nakamura, S.Ota, M.Petri, T.Sako, H.Sakurai, S.Shimoura, K.Steiger, K.Takahashi, M.Takechi, Y.Togano, R.Winkler, K.Yoneda

Well Developed Deformation in 42Si

NUCLEAR REACTIONS C(44S, 42Si), (40S, 38Si), E=210 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ coin. 38,40,42Si; deduced energy levels, J, π, rapid deformation development of Si isotopes. Comparison with available data.

doi: 10.1103/PhysRevLett.109.182501
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2012WA10      Phys.Rev. C 85, 034329 (2012)

P.T.Wady, J.F.Smith, E.S.Paul, B.Hadinia, C.J.Chiara, M.P.Carpenter, C.N.Davids, A.N.Deacon, S.J.Freeman, A.N.Grint, R.V.F.Janssens, B.P.Kay, T.Lauritsen, C.J.Lister, B.M.McGuirk, M.Petri, A.P.Robinson, D.Seweryniak, D.Steppenbeck, S.Zhu

γ-ray spectroscopy of the odd-odd N=Z+2 deformed proton emitter 112Cs

NUCLEAR REACTIONS 58Ni(58Ni, 3np)112Cs, E=260 MEV; measured Eγ, Iγ, pγ-, γγ-coin, Ep, half-life, recoil-decay tagging method using Gammasphere array at ATLAS facility. 112Cs; deduced high-spin levels, J, π, band, multipolarity, configuration, alignment plots. Systematics of excitation energies, quadrupole deformation and alignments in A=110-126 odd-odd Cs isotopes, cranked shell model (CSM) calculations. 109,111Sb, 109,110,111,112Te, 112,113I; measured Eγ from competing channels.

RADIOACTIVITY 112Cs(p)[from 58Ni(58Ni, 3np), E=260 MEV]; measured E(p), I(p), Eγ, Iγ, half-life. Evidence for fine structure in 112Cs proton decay. 111Xe; deduced possible level. 109I, 113Cs(p); measured E(p).

doi: 10.1103/PhysRevC.85.034329
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2011DE20      Phys.Rev. C 83, 064305 (2011)

A.N.Deacon, D.Steppenbeck, S.Zhu, S.J.Freeman, R.V.F.Janssens, M.P.Carpenter, B.Fornal, M.Honma, B.P.Kay, F.G.Kondev, J.Kozemczak, A.Larabee, T.Lauritsen, C.J.Lister, A.P.Robinson, D.Seweryniak, J.F.Smith, Y.Sun, X.Wang, F.R.Xu, Y.-C.Yang

Single-particle and collective structures in 55Cr and 55V

NUCLEAR REACTIONS 9Be(48Ca, np)55V, (48Ca, 2n)55Cr, E=172 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), DCO using Gammasphere Array. 55V, 55Cr; deduced levels, J, π, high-spin levels, configurations, multipolarities, alignments. Comparison with shell-model, and the projected shell model calculations.

NUCLEAR STRUCTURE 55Cr, 55V; calculated levels, J, π using shell model with KB3G, GXPF1A, and GXPF1B interactions, projected shell model, total Routhian surface plots.

doi: 10.1103/PhysRevC.83.064305
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2011NI01      Phys.Rev.Lett. 106, 052502 (2011)

S.Nishimura, Z.Li, H.Watanabe, K.Yoshinaga, T.Sumikama, T.Tachibana, K.Yamaguchi, M.Kurata-Nishimura, G.Lorusso, Y.Miyashita, A.Odahara, H.Baba, J.S.Berryman, N.Blasi, A.Bracco, F.Camera, J.Chiba, P.Doornenbal, S.Go, T.Hashimoto, S.Hayakawa, C.Hinke, E.Ideguchi, T.Isobe, Y.Ito, D.G.Jenkins, Y.Kawada, N.Kobayashi, Y.Kondo, R.Krucken, S.Kubono, T.Nakano, H.Sakurai, H.Scheit, K.Steiger, D.Steppenbeck, K.Sugimoto, H.J.Ong, S.Ota, Zs.Podolyak, S.Takano, A.Takashima, K.Tajiri, T.Teranishi, Y.Wakabayashi, P.M.Walker, O.Wieland, H.Yamaguchi

β-Decay Half-Lives of Very Neutron-Rich Kr to Tc Isotopes on the Boundary of the r-Process Path: An Indication of Fast r-Matter Flow

RADIOACTIVITY 97,98,99,100Kr(β-), 97,98,99,100,101,102Rb(β-), 101,102,103,104,105Sr, 103,104,105,106,107,108Y(β-), 108,109,110Zr(β-), 111,112Nb(β-), 112,113,114,115Mo(β-), 116,117Tc(β-) [from Be(238U, X), E=345 MeV/nucleon]; measured decay products, Ee, Ie; deduced T1/2. Comparison with FRDM+QRPA, KTUY+GT2 model calculations, astrophysical r-process path.

doi: 10.1103/PhysRevLett.106.052502
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2011SU11      Phys.Rev.Lett. 106, 202501 (2011)

T.Sumikama, K.Yoshinaga, H.Watanabe, S.Nishimura, Y.Miyashita, K.Yamaguchi, K.Sugimoto, J.Chiba, Z.Li, H.Baba, J.S.Berryman, N.Blasi, A.Bracco, F.Camera, P.Doornenbal, S.Go, T.Hashimoto, S.Hayakawa, C.Hinke, E.Ideguchi, T.Isobe, Y.Ito, D.G.Jenkins, Y.Kawada, N.Kobayashi, Y.Kondo, R.Krucken, S.Kubono, G.Lorusso, T.Nakano, M.Kurata-Nishimura, A.Odahara, H.J.Ong, S.Ota, Zs.Podolyak, H.Sakurai, H.Scheit, K.Steiger, D.Steppenbeck, S.Takano, A.Takashima, K.Tajiri, T.Teranishi, Y.Wakabayashi, P.M.Walker, O.Wieland, H.Yamaguchi

Structural Evolution in the Neutron-Rich Nuclei 106Zr and 108Zr

RADIOACTIVITY 106,108Zr, 104,105,106Y(β-) [from Be(238U, X), E=345 MeV/nucleon]; measured time correlations, Eγ, Iγ; deduced first 2+ and 4+ states energies, J, π, ground state deformation in 106,108Zr, T1/2 for a new isomer in 108Zr and 106Y. Comparison with 1/E(2+) systematics for Kr, Sr, Zr, Mo, Ru, Pd, Cd, Sn isotopes.

doi: 10.1103/PhysRevLett.106.202501
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2011WA03      Phys.Lett. B 696, 186 (2011)

H.Watanabe, T.Sumikama, S.Nishimura, K.Yoshinaga, Z.Li, Y.Miyashita, K.Yamaguchi, H.Baba, J.S.Berryman, N.Blasi, A.Bracco, F.Camera, J.Chiba, P.Doornenbal, S.Go, T.Hashimoto, S.Hayakawa, C.Hinke, E.Ideguchi, T.Isobe, Y.Ito, D.G.Jenkins, Y.Kawada, N.Kobayashi, Y.Kondo, R.Krucken, S.Kubono, G.Lorusso, T.Nakano, M.Kurata-Nishimura, A.Odahara, H.J.Ong, S.Ota, Zs.Podolyak, H.Sakurai, H.Scheit, Y.Shi, K.Steiger, D.Steppenbeck, K.Sugimoto, K.Tajiri, S.Takano, A.Takashima, T.Teranishi, Y.Wakabayashi, P.M.Walker, O.Wieland, F.R.Xu, H.Yamaguchi

Low-lying level structure of the neutron-rich nucleus 109Nb: A possible oblate-shape isomer

NUCLEAR REACTIONS Be(238U, X)109Nb/109Zr, E=345 MeV/nucleon; measured fission fragments, Eγ, Iγ, β-γ-coin.; deduced level scheme, J, π, T1/2 for isomeric state in 109Nb, B(E1), B(M1), B(E2), B(M2), low-lying oblate-deformed states. Nilsson diagrams, calculation of potential energy surfaces.

doi: 10.1016/j.physletb.2010.12.028
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2011WA26      Phys.Lett. B 704, 270 (2011)

H.Watanabe, K.Yamaguchi, A.Odahara, T.Sumikama, S.Nishimura, K.Yoshinaga, Z.Li, Y.Miyashita, K.Sato, L.Prochniak, H.Baba, J.S.Berryman, N.Blasi, A.Bracco, F.Camera, J.Chiba, P.Doornenbal, S.Go, T.Hashimoto, S.Hayakawa, C.Hinke, N.Hinohara, E.Ideguchi, T.Isobe, Y.Ito, D.G.Jenkins, Y.Kawada, N.Kobayashi, Y.Kondo, R.Krucken, S.Kubono, G.Lorusso, T.Nakano, T.Nakatsukasa, M.Kurata-Nishimura, H.J.Ong, S.Ota, Zs.Podolyak, H.Sakurai, H.Scheit, K.Steiger, D.Steppenbeck, K.Sugimoto, K.Tajiri, S.Takano, A.Takashima, T.Teranishi, Y.Wakabayashi, P.M.Walker, O.Wieland, H.Yamaguchi

Development of axial asymmetry in the neutron-rich nucleus 110Mo

RADIOACTIVITY 110Nb(β-) [from Be(238U, X), E=345 MeV/nucleon]; measured decay products, Eγ, Iγ, X-rays. 110Mo; deduced energy levels, J, π, quasi-γ-band state, B(e2) ratio. Comparison with general Bohr Hamiltonian method calculations, systematics of low-lying levels of even-even Mo nuclei.

NUCLEAR STRUCTURE 104,106,108,110Mo; calculated moments of inertia, potential energy surface, the nuclear landscape. General Bohr Hamiltonian method calculations.

doi: 10.1016/j.physletb.2011.09.050
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2010DE26      Phys.Rev. C 82, 034305 (2010)

A.N.Deacon, J.F.Smith, S.J.Freeman, R.V.F.Janssens, M.P.Carpenter, B.Hadinia, C.R.Hoffman, B.P.Kay, T.Lauritsen, C.J.Lister, D.O'Donnell, J.Ollier, T.Otsuka, D.Seweryniak, K.-M.Spohr, D.Steppenbeck, S.L.Tabor, V.Tripathi, Y.Utsuno, P.T.Wady, S.Zhu

Cross-shell excitations near the "island of inversion": Structure of 30Mg

NUCLEAR REACTIONS 14C(18O, 2p), E=37 MeV; measured Eγ, Iγ, γγ-, (30Mg)γ-coin, γ(θ) using Gammasphere array, enriched 14C target. 30Mg; deduced levels, J, π, multipolarities. Comparison with shell-model calculations using the USD and SDPF-M interactions, and the Monte Carlo shell model. Systematics of first 2+ and 4+ states in 24,26,28,30,32,34Mg.

NUCLEAR REACTIONS 14C(18O, 2p)26Mg/30Mg/30Al/30Si, E=37 MeV; measured Eγ and yields.

doi: 10.1103/PhysRevC.82.034305
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2010ME07      Phys.Rev. C 82, 024308 (2010)

D.Mengoni, J.J.Valiente-Dobon, A.Gadea, S.Lunardi, S.M.Lenzi, R.Broda, A.Dewald, T.Pissulla, L.J.Angus, S.Aydin, D.Bazzacco, G.Benzoni, P.G.Bizzeti, A.M.Bizzeti-Sona, P.Boutachkov, L.Corradi, F.Crespi, G.de Angelis, E.Farnea, E.Fioretto, A.Goergen, M.Gorska, A.Gottardo, E.Grodner, A.M.Howard, W.Krolas, S.Leoni, P.Mason, D.Montanari, G.Montagnoli, D.R.Napoli, A.Obertelli, R.Orlandi, T.Pawlat, G.Pollarolo, F.Recchia, A.Algora, B.Rubio, E.Sahin, F.Scarlassara, R.Silvestri, J.F.Smith, A.M.Stefanini, D.Steppenbeck, S.Szilner, C.A.Ur, P.T.Wady, J.Wrzesinski

Lifetime measurements of excited states in neutron-rich 44, 46Ar populated via a multinucleon transfer reaction

NUCLEAR REACTIONS 208Pb(48Ca, X)42Ar/43Ar/44Ar/45Ar/46Ar, E=310 MeV; measured Eγ, Iγ, (recoils)γ-coin, and half-lives by differential RDDS method. CLARA-PRISMA system. 44,46Ar; deduced levels, B(E2). Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.82.024308
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2010ST01      Phys.Rev. C 81, 014305 (2010); Erratum Phys.Rev. C 82, 069903 (2010)

D.Steppenbeck, A.N.Deacon, S.J.Freeman, R.V.F.Janssens, S.Zhu, M.P.Carpenter, P.Chowdhury, M.Honma, T.Lauritsen, C.J.Lister, D.Seweryniak, J.F.Smith, S.L.Tabor, B.J.Varley

High-spin structures in the neutron-rich isotopes 57-60Mn

NUCLEAR REACTIONS 13,14C(48Ca, X), E=130 MeV; measured Eγ, Iγ, γγ-coin using the Gammasphere array, γ(θ), DCO ratios. 57,58,59,60Mn; deduced levels, J, π, multipolarities. Comparison with shell-model calculations using the GXPF1A effective interaction.

doi: 10.1103/PhysRevC.81.014305
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2010ST13      Nucl.Phys. A847, 149 (2010)

D.Steppenbeck, A.N.Deacon, S.J.Freeman, R.V.F.Janssens, M.P.Carpenter, C.R.Hoffman, B.P.Kay, T.Lauritsen, C.J.Lister, D.O'Donnell, J.Ollier, D.Seweryniak, J.F.Smith, K.-M.Spohr, S.L.Tabor, V.Tripathi, P.T.Wady, S.Zhu

Cross-shell excitations in 30Al and 30Si at high spin

NUCLEAR REACTIONS 14C(18O, X), E=37 MeV; measured Eγ, Iγ, (residual)γ-, γγ-coin, γ(θ), DCO ratios using the Gammasphere array and Fragment Mass Analyzer. 30Al, 30Si; deduced levels, J, π, multipolarities. Comparison with shell-model calculations.

doi: 10.1016/j.nuclphysa.2010.07.010
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2009ME05      Acta Phys.Pol. B40, 485 (2009)

D.Mengoni, J.J.Valiente-Dobon, A.Gadea, E.Farnea, S.M.Lenzi, S.Lunardi, A.Dewald, T.Pissulla, S.Szilner, A.M.Stefanini, R.Broda, F.Recchia, A.Algora, L.Angus, S.Aydin, D.Bazzacco, G.Benzoni, P.G.Bizzeti, A.M.Bizzeti-Sona, P.Boutachkov, L.Corradi, F.Crespi, G.de Angelis, E.Fioretto, A.Gorgen, M.Gorska, A.Gottardo, E.Grodner, A.Howard, W.Krolas, S.Leoni, P.Mason, R.Menegazzo, D.Montanari, G.Montagnoli, D.R.Napoli, A.Obertelli, T.Pawlat, B.Rubio, E.Sahin, F.Scarlassara, J.F.Smith, D.Steppenbeck, C.A.Ur, P.T.Wady, J.Wrzesinski

Lifetime Measurements of Excited States in Neutron-Rich Nuclei Around 48Ca

NUCLEAR REACTIONS 208Pb(48Ca, X), E=310 MeV;50Ca, 51Sc, 44,45,46Ar; measured Eγ, Iγ; deduced lifetime, B(E2).


2009VA06      Phys.Rev.Lett. 102, 242502 (2009)

J.J.Valiente-Dobon, D.Mengoni, A.Gadea, E.Farnea, S.M.Lenzi, S.Lunardi, A.Dewald, Th.Pissulla, S.Szilner, R.Broda, F.Recchia, A.Algora, L.Angus, D.Bazzacco, G.Benzoni, P.G.Bizzeti, A.M.Bizzeti-Sona, P.Boutachkov, L.Corradi, F.Crespi, G.de Angelis, E.Fioretto, A.Gorgen, M.Gorska, A.Gottardo, E.Grodner, B.Guiot, A.Howard, W.Krolas, S.Leoni, P.Mason, R.Menegazzo, D.Montanari, G.Montagnoli, D.R.Napoli, A.Obertelli, T.Pawlat, B.Rubio, E.Sahin, F.Scarlassara, R.Silvestri, A.M.Stefanini, J.F.Smith, D.Steppenbeck, C.A.Ur, P.T.Wady, J.Wrzesinski, E.Maglione, I.Hamamoto

Lifetime Measurements of the Neutron-Rich N = 30 Isotones 50Ca and 51Sc: Orbital Dependence of Effective Charges in the fp Shell

NUCLEAR REACTIONS 208Pb(48Ca, 50Ca), (48Ca, 51Sc), E=310 MeV; measured Eγ, Iγ, half-lives for first excited states using DSAM. 50Ca, 51Sc; deduced B(E2).

doi: 10.1103/PhysRevLett.102.242502
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2009ZH23      Phys.Rev. C 80, 024318 (2009)

S.Zhu, R.V.F.Janssens, B.Fornal, S.J.Freeman, M.Honma, R.Broda, M.P.Carpenter, A.N.Deacon, E.Jackson, B.P.Kay, T.Lauritsen, C.J.Lister, P.F.Mantica, T.Otsuka, D.Seweryniak, J.F.Smith, D.Steppenbeck, X.Wang

High-lying, non-yrast shell structure in 52Ti

NUCLEAR REACTIONS 9Be(48Ca, X)52Ti/52Sc/55V/55Cr, E=172 MeV; measured Eγ, Iγ, γγ-coin, angular distributions, half-lives by DSAM. 52Ti; deduced levels, J, π. Comparison with full fp shell-model calculations using GXPF1A, FPD6, and KB3G effective interactions.

RADIOACTIVITY 52Sc(β-)[from 9Be(48Ca, X), E=172 MeV]; measured Eγ, Iγ and γγ-coin. 52Ti; deduced levels, J, π.

doi: 10.1103/PhysRevC.80.024318
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2008VA08      Phys.Rev. C 78, 024302 (2008)

J.J.Valiente-Dobon, S.M.Lenzi, S.J.Freeman, S.Lunardi, J.F.Smith, A.Gottardo, F.Della Vedova, E.Farnea, A.Gadea, D.R.Napoli, M.Axiotis, S.Aydin, D.Bazzacco, P.G.Bizzeti, A.M.Bizzeti-Sona, G.Benzoni, D.Bucurescu, L.Corradi, A.N.Deacon, G.De Angelis, E.Fioretto, B.Guiot, M.Ionescu-Bujor, A.Iordachescu, S.Leoni, N.Marginean, R.Marginean, P.Mason, R.Menegazzo, D.Mengoni, B.Million, G.Montagnoli, R.Orlandi, F.Recchia, E.Sahin, F.Scarlassara, R.P.Singh, A.M.Stefanini, D.Steppenbeck, S.Szilner, C.A.Ur, B.J.Varley, O.Wieland

Spectroscopy of neutron-rich 59-63Mn isotopes

NUCLEAR REACTIONS 238U(70Zn, X)58Mn/59Mn/60Mn/61Mn/62Mn/63Mn, E=460 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin. 59,60,61,62,63Mn; deduced levels, J, π. Comparison with large scale shell model calculations.

doi: 10.1103/PhysRevC.78.024302
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2007ZH37      Phys.Lett. B 650, 135 (2007)

S.Zhu, R.V.F.Janssens, B.Fornal, S.J.Freeman, M.Honma, R.Broda, M.P.Carpenter, A.N.Deacon, B.P.Kay, F.G.Kondev, W.Krolas, J.Kozemczak, A.Larabee, T.Lauritsen, S.N.Liddick, C.J.Lister, P.F.Mantica, T.Otsuka, T.Pawlat, A.Robinson, D.Seweryniak, J.F.Smith, D.Steppenbeck, B.E.Tomlin, J.Wrzesinski, X.Wang

One-particle excitations outside the 54Ti semi-magic core: The 55V and 55Ti yrast structures

NUCLEAR REACTIONS 9Be(48Ca, np), (48Ca, 2p), E=172 MeV; measured Eγ, Iγ, γγ-coin, (particle)γ-coin using Gammasphere. 55V, 55Ti deduced levels, J, π. Comparison with model calculations.

doi: 10.1016/j.physletb.2007.05.014
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