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NSR database version of April 11, 2024.

Search: Author = J.Simonis

Found 31 matches.

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2023FE08      Phys. Rev. Res. 5, L022044 (2023)

R.W.Fearick, P.von Neumann-Cosel, S.Bacca, J.Birkhan, F.Bonaiti, I.Brandherm, G.Hagen, H.Matsubara, W.Nazarewicz, N.Pietralla, V.Yu.Ponomarev, P.-G.Reinhard, X.Roca-Maza, A.Richter, A.Schwenk, J.Simonis, and A.Tamii

Electric dipole polarizability of 40Ca

NUCLEAR REACTIONS 40Ca(p, p'), E=5-25 MeV; measured reaction products, Ep, Ip; deduced electric dipole strength distribution, σ(θ, E). Comparison with available data. The Grand Raiden spectrometer, RCNP, Osaka.

doi: 10.1103/PhysRevResearch.5.L022044
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2023HE04      Phys.Rev. C 107, 024310 (2023)

K.Hebeler, V.Durant, J.Hoppe, M.Heinz, A.Schwenk, J.Simonis, A.Tichai

Normal ordering of three-nucleon interactions for ab initio calculations of heavy nuclei

NUCLEAR STRUCTURE 18O, 48Ca, 78Ni, 132Sn, 208Pb; calculated ground-state energies. 132Sn, 208Pb; calculated charge radii. Jacobi normal-ordering (NO) framework to include three-nucleon (3N) interactions in ab initio many-body calculations up to heavy nuclei at the two-body operator level. Comparison to experimental data.

doi: 10.1103/PhysRevC.107.024310
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2022AK02      Phys.Rev. C 105, 024301 (2022)

K.Akdogan, D.Layh, I.Weinberger, J.Simonis, N.Barnea, S.Bacca

Removing center of mass effects in response function and sum rule calculations based on the harmonic oscillator basis

doi: 10.1103/PhysRevC.105.024301
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2022MA04      Phys.Rev.Lett. 128, 022502 (2022)

S.Malbrunot-Ettenauer, S.Kaufmann, S.Bacca, C.Barbieri, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, T.Duguet, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, J.D.Holt, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, T.Miyagi, P.Navratil, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, S.J.Novario, T.Papenbrock, T.Ratajczyk, P.-G.Reinhard, L.V.Rodriguez, R.Sanchez, S.Sailer, A.Schwenk, J.Simonis, V.Soma, S.R.Stroberg, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Nuclear Charge Radii of the Nickel Isotopes 58-68, 70Ni

NUCLEAR MOMENTS 58,59,60,61,62,63,64,65,66,67,68Ni, 70Ni; measured frequency-time spectrum; deduced isotope shifts, mean-square charge radii. Comparison with ab initio approaches. Collinear laser spectroscopy beam line COLLAPS, ISOLDE/CERN.

doi: 10.1103/PhysRevLett.128.022502
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2021ST03      Phys.Rev.Lett. 126, 022501 (2021)

S.R.Stroberg, J.D.Holt, A.Schwenk, J.Simonis

Ab Initio Limits of Atomic Nuclei

NUCLEAR STRUCTURE Z=1-26; calculated probabilities for given isotopes to be bound with respect to one- or two-neutron (proton) removals, separation energies, dripline using a chiral two- and three-nucleon interaction with good saturation properties, we use the valence-space in-medium similarity renormalization group. Comparison with available data.

doi: 10.1103/PhysRevLett.126.022501
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2020CI02      Phys.Rev. C 101, 021303 (2020)

M.Ciemala, S.Ziliani, F.C.L.Crespi, S.Leoni, B.Fornal, A.Maj, P.Bednarczyk, G.Benzoni, A.Bracco, C.Boiano, S.Bottoni, S.Brambilla, M.Bast, M.Beckers, T.Braunroth, F.Camera, N.Cieplicka-Orynczak, E.Clement, S.Coelli, O.Dorvaux, S.Erturk, G.de France, C.Fransen, A.Goldkuhle, J.Grebosz, M.N.Harakeh, L.W.Iskra, B.Jacquot, A.Karpov, M.Kicinska-Habior, Y.Kim, M.Kmiecik, A.Lemasson, S.M.Lenzi, M.Lewitowicz, H.Li, I.Matea, K.Mazurek, C.Michelagnoli, M.Matejska-Minda, B.Million, C.Muller-Gatermann, V.Nanal, P.Napiorkowski, D.R.Napoli, R.Palit, M.Rejmund, Ch.Schmitt, M.Stanoiu, I.Stefan, E.Vardaci, B.Wasilewska, O.Wieland, M.Zieblinski, M.Zielinska, A.Atac, D.Barrientos, B.Birkenbach, A.J.Boston, B.Cederwall, L.Charles, J.Collado, D.M.Cullen, P.Desesquelles, C.Domingo-Pardo, J.Dudouet, J.Eberth, V.Gonzalez, J.Goupil, L.J.Harkness-Brennan, H.Hess, D.S.Judson, A.Jungclaus, W.Korten, M.Labiche, A.Lefevre, R.Menegazzo, D.Mengoni, J.Nyberg, R.M.Perez-Vidal, Zs.Podolyak, A.Pullia, F.Recchia, P.Reiter, F.Saillant, M.D.Salsac, E.Sanchis, O.Stezowski, Ch.Theisen, J.J.Valiente-Dobon, J.D.Holt, J.Menendez, A.Schwenk, J.Simonis

Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2+ state in 16C and 20O

NUCLEAR REACTIONS 181Ta(18O, X)16C/19O/20O, E=7.0 MeV/nucleon; measured reaction products, Eγ, Iγ, (particle)γ-coin, level half-lives by Doppler-shift attenuation method and Monte Carlo simulations using AGATA array, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer at GANIL. 16C, 19,20O; deduced levels, J, π. Comparison with predictions of the valence-space in-medium similarity renormalization group (VS-IMSRG) and the no-core shell model (NCSM) with NN and 3N interactions.

doi: 10.1103/PhysRevC.101.021303
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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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2020HE25      Phys.Lett. B 809, 135678 (2020)

S.Heil, M.Petri, K.Vobig, D.Bazin, J.Belarge, P.Bender, B.A.Brown, R.Elder, B.Elman, A.Gade, T.Haylett, J.D.Holt, T.Huther, A.Hufnagel, H.Iwasaki, N.Kobayashi, C.Loelius, B.Longfellow, E.Lunderberg, M.Mathy, J.Menendez, S.Paschalis, R.Roth, A.Schwenk, J.Simonis, I.Syndikus, D.Weisshaar, K.Whitmore

Electromagnetic properties of 21O for benchmarking nuclear Hamiltonians

NUCLEAR REACTIONS 9Be(24F, 21O), E=95 MeV/nucleon; measured reaction products, Eγ, Iγ. 21O; deduced γ-ray energies, J, π, level T1/2, B(E2). Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2020.135678
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2020KA22      Phys.Rev.Lett. 124, 132502 (2020)

S.Kaufmann, J.Simonis, S.Bacca, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, A.Kanellakopoulos, S.Malbrunot-Ettenauer, M.Miorelli, R.Neugart, G.Neyens, W.Nortershauser, R.Sanchez, S.Sailer, A.Schwenk, T.Ratajczyk, L.V.Rodriguez, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Charge Radius of the Short-Lived 68Ni and Correlation with the Dipole Polarizability

NUCLEAR MOMENTS 58,60,61,62,64,68Ni; measured frequencies; deduced resonance spectra, isotope shifts, nuclear charge radii. Comparison with novel coupled-cluster calculations.

doi: 10.1103/PhysRevLett.124.132502
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2020MA09      Phys.Rev.Lett. 124, 092502 (2020)

V.Manea, J.Karthein, D.Atanasov, M.Bender, K.Blaum, T.E.Cocolios, S.Eliseev, A.Herlert, J.D.Holt, W.J.Huang, Y.A.Litvinov, D.Lunney, J.Menendez, M.Mougeot, D.Neidherr, L.Schweikhard, A.Schwenk, J.Simonis, A.Welker, F.Wienholtz, K.Zuber

First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

ATOMIC MASSES 124,126,127,127m,128,129,129m,131,132Cd; measured mass excesses using phase-imaging ion cyclotron-resonance (PI-ICR) method with the ISOLTRAP spectrometer at ISOLDE-CERN. Cd isotopes were produced in U(p, F), E=1.4 GeV reaction followed by separation of fission fragments using ISOLDE High-resolution separator. Comparison with literature data in AME2016 evaluation, and with large-scale shell-model, mean-field, beyond-mean-field, and ab initio valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(n) for N=81, 83 and Z=48-68, and for two-neutron shell gaps for N=82, Z=42-70 nuclei.

doi: 10.1103/PhysRevLett.124.092502
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2019HO09      Phys.Rev. C 100, 024318 (2019)

J.Hoppe, C.Drischler, K.Hebeler, A.Schwenk, J.Simonis

Probing chiral interactions up to next-to-next-to-next-to-leading order in medium-mass nuclei

NUCLEAR STRUCTURE 3H, 16,24O, 40,48,52,60Ca, 56,68Ni; calculated binding energies, charge radii, and ground-state energies per nucleon. Ab initio calculations using in-medium similarity renormalization group (IM-SRG) based on chiral interactions at next-to-leading order (NLO), N2LO, and N3LO. Comparison with experimental data.

doi: 10.1103/PhysRevC.100.024318
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2019SI46      Eur.Phys.J. A 55, 241 (2019)

J.Simonis, S.Bacca, G.Hagen

First principles electromagnetic responses in medium-mass nuclei

doi: 10.1140/epja/i2019-12825-0
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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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2019XU09      Phys.Rev. C 99, 064303 (2019)

X.Xu, M.Wang, K.Blaum, J.D.Holt, Yu.A.Litvinov, A.Schwenk, J.Simonis, S.R.Stroberg, Y.H.Zhang, H.S.Xu, P.Shuai, X.L.Tu, X.H.Zhou, F.R.Xu, G.Audi, R.J.Chen, X.C.Chen, C.Y.Fu, Z.Ge, W.J.Huang, S.Litvinov, D.W.Liu, Y.H.Lam, X.W.Ma, R.S.Mao, A.Ozawa, B.H.Sun, Y.Sun, T.Uesaka, G.Q.Xiao, Y.M.Xing, T.Yamaguchi, Y.Yamaguchi, X.L.Yan, Q.Zeng, H.W.Zhao, T.C.Zhao, W.Zhang, W.L.Zhan

Masses of neutron-rich 52-54Sc and 54, 56Ti nuclides: The N=32 subshell closure in scandium

ATOMIC MASSES 52,53,54Sc, 54,56Ti; measured mass excesses using isochronous mass spectrometry at CRSe-HIRFL, Lanzhou. Isotopes produced in 9Be(86Kr, X), E=460.65 MeV/nucleon reaction and separated using RIBLL2. Comparison with AME-2012 evaluation, and results from six previous experiments, and with valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(2n) values in N=27-34 K, Ca, Sc, Ti isotopic chains, and those of empirical shell gaps in N=24-34 K, Ca, Sc, Ti isotopic chains and Z=19-25 N=32 isotones.

doi: 10.1103/PhysRevC.99.064303
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2018HU12      Phys.Rev. C 98, 044301 (2018)

L.Huth, V.Durant, J.Simonis, A.Schwenk

Shell-model interactions from chiral effective field theory

NUCLEAR STRUCTURE 18,19,20O, 19,21,22F, 21,23,24Ne, 24,26,28Mg, 26,28,29Al, 29,30,31Si, 32,33,35P, 32,33,35S, 34,35,37Cl, 36,37Ar, 38K; calculated levels, J, π for the chiral shell-model interactions at LO, NLO, and NLOvs, and compared to experimental, and USDA/USDB shell-model results.

doi: 10.1103/PhysRevC.98.044301
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2018LE03      Phys.Rev.Lett. 120, 062503 (2018)

E.Leistenschneider, M.P.Reiter, S.Ayet San Andres, B.Kootte, J.D.Holt, P.Navratil, C.Babcock, C.Barbieri, B.R.Barquest, J.Bergmann, J.Bollig, T.Brunner, E.Dunling, A.Finlay, H.Geissel, L.Graham, F.Greiner, H.Hergert, C.Hornung, C.Jesch, R.Klawitter, Y.Lan, D.Lascar, K.G.Leach, W.Lippert, J.E.McKay, S.F.Paul, A.Schwenk, D.Short, J.Simonis, V.Soma, R.Steinbrugge, S.R.Stroberg, R.Thompson, M.E.Wieser, C.Will, M.Yavor, C.Andreoiu, T.Dickel, I.Dillmann, G.Gwinner, W.R.Plass, C.Scheidenberger, A.A.Kwiatkowski, J.Dilling

Dawning of the N=32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes

ATOMIC MASSES 51V, 51,52,53,54,55Ti, 52,53,54,55Cr; measured radio frequencies, TOF; deduced mass excesses. Comparison with the AME16 recommended values.

doi: 10.1103/PhysRevLett.120.062503
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2018MO07      Phys.Rev.Lett. 120, 152503 (2018)

T.D.Morris, J.Simonis, S.R.Stroberg, C.Stumpf, G.Hagen, J.D.Holt, G.R.Jansen, T.Papenbrock, R.Roth, A.Schwenk

Structure of the Lightest Tin Isotopes

NUCLEAR STRUCTURE 100,108,116,124,132Sn, 101Sn, 105Te; calculated energy levels, J, π using nucleon-nucleon and three-nucleon forces constrained by data of few-nucleon systems.

doi: 10.1103/physrevlett.120.152503
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2018MO14      Phys.Rev.Lett. 120, 232501 (2018)

M.Mougeot, D.Atanasov, K.Blaum, K.Chrysalidis, T.Day Goodacre, D.Fedorov, V.Fedosseev, S.George, F.Herfurth, J.D.Holt, D.Lunney, V.Manea, B.Marsh, D.Neidherr, M.Rosenbusch, S.Rothe, L.Schweikhard, A.Schwenk, C.Seiffert, J.Simonis, S.R.Stroberg, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Precision Mass Measurements of 58-63Cr: Nuclear Collectivity Towards the N=40 Island of Inversion

ATOMIC MASSES 58,59,60,61,62,63Cr; measured cyclotron frequency, TOF; deduced mass excesses. Comparison with AME16, theoretical calculations.

doi: 10.1103/PhysRevLett.120.232501
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2017CR03      Phys.Rev. C 95, 064317 (2017)

H.L.Crawford, A.O.Macchiavelli, P.Fallon, M.Albers, V.M.Bader, D.Bazin, C.M.Campbell, R.M.Clark, M.Cromaz, J.Dilling, A.Gade, A.Gallant, J.D.Holt, R.V.F.Janssens, R.Krucken, C.Langer, T.Lauritsen, I.Y.Lee, J.Menendez, S.Noji, S.Paschalis, F.Recchia, J.Rissanen, A.Schwenk, M.Scott, J.Simonis, S.R.Stroberg, J.A.Tostevin, C.Walz, D.Weisshaar, A.Wiens, K.Wimmer, S.Zhu

Unexpected distribution of ν1f7/2 strength in 49Ca

NUCLEAR REACTIONS 9Be(48Ca, 47Ca), (50Ca, 49Ca), E not given, [secondary 48,50Ca beams from 9Be(82Se, X), E=140 MeV/nucleon primary reaction, and using A1900 fragment separator at NSCL-MSU]; measured reaction 1n-knockout products using S800 magnetic spectrograph, Eγ, Iγ, γγ-coin, γ(particle) correlated events, using GRETINA array for γ detection, σ(-1n), parallel momentum distributions. 47,49Ca; deduced levels, J, π, l-transfer, γ-ray yields by fitting the data with GEANT4 simulation, spectroscopic factors, configurations, spectroscopic strengths for the 1f7/2 neutron hole states. Comparison with shell-model calculations based on NN+3N force in ν(pf) model space, GXPF1 interaction, and NN+3N including the ν1g9/2 orbital.

doi: 10.1103/PhysRevC.95.064317
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2017LA16      Phys.Rev. C 96, 044323 (2017)

D.Lascar, R.Klawitter, C.Babcock, E.Leistenschneider, S.R.Stroberg, B.R.Barquest, A.Finlay, M.Foster, A.T.Gallant, P.Hunt, J.Kelly, B.Kootte, Y.Lan, S.F.Paul, M.L.Phan, M.P.Reiter, B.Schultz, D.Short, J.Simonis, C.Andreoiu, M.Brodeur, I.Dillmann, G.Gwinner, J.D.Holt, A.A.Kwiatkowski, K.G.Leach, J.Dilling

Precision mass measurements of 125-127Cd isotopes and isomers approaching the N=82 closed shell

ATOMIC MASSES 125,125m,126,127,127mCd, 133Cs; measured TOF ion cyclotron resonances, cyclotron frequencies using TITAN-ISOLTRAP-TRIUMF facility; deduced mass excesses. Comparison with AME-2012 evaluated data, and ab initio shell-model calculations using NUSHELLX code, and with IMSRG calculations. The Cd isotopes produced in U(p, F), E=500 MeV protons using uranium carbide target and Ion Guide Laser Ion Source (IG-LIS) at ISAC-TRIUMF facility.

doi: 10.1103/PhysRevC.96.044323
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2017SI17      Phys.Rev. C 96, 014303 (2017)

J.Simonis, S.R.Stroberg, K.Hebeler, J.D.Holt, A.Schwenk

Saturation with chiral interactions and consequences for finite nuclei

NUCLEAR STRUCTURE 40,54Ca, 56,78Ni; calculated ground-state energies and charge radii using the closed-shell IM-SRG, and compared with evaluated experimental data. 4He, 16,22,24O, 36,40,48,52,54,60Ca, 48,56,68,78Ni; calculated binding energies and charge radii using the IM-SRG for the four Hamiltonians, and compared with evaluated data. 19,20,21,22,23,24,25,26,27,28,29,30,31,32Na, 28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45S, 40,41,42,43,44,45,46,47,48,49,50,51,52,53,54Ca, 48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64Mn, 53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72Ni; calculated ground-state energies and S(2n), charge radii of Mn isotopes, first excited 2+ states of Ca, S and Ni isotopes using the VS-IM-SRG, and compared with experimental data. Calculations used ab initio in-medium similarity renormalization group (IM-SRG) method, and valence-space (VS) IM-SRG for charge radii.

doi: 10.1103/PhysRevC.96.014303
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2016GA34      Nat.Phys. 12, 594 (2016)

R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, A.Ekstrom, N.Frommgen, G.Hagen, M.Hammen, K.Hebeler, J.D.Holt, G.R.Jansen, M.Kowalska, K.Kreim, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, T.Papenbrock, J.Papuga, A.Schwenk, J.Simonis, K.A.Wendt, D.T.Yordanov

Unexpectedly large charge radii of neutron-rich calcium isotopes

NUCLEAR REACTIONS U(p, X)43Ca/44Ca/45Ca/46Ca/47Ca/48Ca/49Ca/50Ca/51Ca/52Ca, E=1.4GeV; measured hyperfine structure spectra; deduced charge radii. Comparison with available data.

doi: 10.1038/nphys3645
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2016HA27      Nat.Phys. 12, 186 (2016)

G.Hagen, A.Ekstrom, C.Forssen, G.R.Jansen, W.Nazarewicz, T.Papenbrock, K.A.Wendt, S.Bacca, N.Barnea, B.Carlsson, C.Drischler, K.Hebeler, M.Hjorth-Jensen, M.Miorelli, G.Orlandini, A.Schwenk, J.Simonis

Neutron and weak-charge distributions of the 48Ca nucleus

NUCLEAR STRUCTURE 48Ca; calculated neutron skin parameters, radii. Ab initio calculations.

doi: 10.1038/nphys3529
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2016SI02      Phys.Rev. C 93, 011302 (2016)

J.Simonis, K.Hebeler, J.D.Holt, J.Menendez, A.Schwenk

Exploring sd-shell nuclei from two- and three-nucleon interactions with realistic saturation properties

NUCLEAR STRUCTURE 18,19,20,21,22,23,24,25,26,27,28O, 19,20,21,22,23,24,25,26,27,28,29F, 20,21,22,23,24,25,26,27,28,29,30Ne, 21,22,23,24,25,26,27,28,29,30,31Na, 22,23,24,25,26,27,28,29,30,31,32Mg, 23,24,25,26,27,28,29,30,31,32,33Al, 24,25,26,27,28,29,30,31,32,33,34Si, 25,26,27,28,29,30,31,32,33,34,35P, 26,27,28,29,30,31,32,33,34,35,36S, 27,28,29,30,31,32,33,34,35,36,37Cl, 28,29,30,31,32,33,34,35,36,37,38Ar, 29,30,31,32,33,34,35,36,37,38,39K, 30,31,32,33,34,35,36,37,38,39,40Ca; calculated S(2n), S(2p), energies of first 2+ states in even-even nuclei, and theoretical uncertainty estimates from variation of the resolution scale, the low-energy couplings, and from the many-body method. 22,23,24,25,26,27,28,29,30,31,32Mg, 27,28,29,30,31,32,33,34,35,36,37Cl; calculated ground-state energies relative to that of 16O, and theoretical uncertainties. Comparison to AME-12 data.

doi: 10.1103/PhysRevC.93.011302
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2015HA21      Phys.Rev. C 92, 031305 (2015)

T.Hashimoto, A.M.Krumbholz, P.-G.Reinhard, A.Tamii, P.von Neumann-Cosel, T.Adachi, N.Aoi, C.A.Bertulani, H.Fujita, Y.Fujita, E.Ganioglu, K.Hatanaka, E.Ideguchi, C.Iwamoto, T.Kawabata, N.T.Khai, A.Krugmann, D.Martin, H.Matsubara, K.Miki, R.Neveling, H.Okamura, H.J.Ong, I.Poltoratska, V.Yu.Ponomarev, A.Richter, H.Sakaguchi, Y.Shimbara, Y.Shimizu, J.Simonis, F.D.Smit, G.Susoy, T.Suzuki, J.H.Thies, M.Yosoi, J.Zenihiro

Dipole polarizability of 120Sn and nuclear energy density functionals

NUCLEAR REACTIONS 120Sn(polarized p, p'), E=295 MeV; measured scattered proton spectra, p(θ) using Grand Raiden spectrometer at RCNP-Osaka; analyzed polarization transfer observables; deduced ISGQR excitation, B(E1), precise electric dipole polarizability αD, nuclear symmetry energy and its density dependence. Comparison with other experimental data. Comparison with model calculations based on Skyrme interactions and on relativistic Hamiltonians.

doi: 10.1103/PhysRevC.92.031305
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2015KR05      Phys.Lett. B 744, 7 (2015)

A.M.Krumbholz, P.von Neumann-Cosel, T.Hashimoto, A.Tamii, T.Adachi, C.A.Bertulani, H.Fujita, Y.Fujita, E.Ganioglu, K.Hatanaka, C.Iwamoto, T.Kawabata, N.T.Khai, A.Krugmann, D.Martin, H.Matsubara, R.Neveling, H.Okamura, H.J.Ong, I.Poltoratska, V.Yu.Ponomarev, A.Richter, H.Sakaguchi, Y.Shimbara, Y.Shimizu, J.Simonis, F.D.Smit, G.Susoy, J.H.Thies, T.Suzuki, M.Yosoi, J.Zenihiro

Low-energy electric dipole response in 120Sn

NUCLEAR REACTIONS 120Sn(p, p'), E=295 MeV; measured reaction products, Ep, Ip; deduced σ, σ(θ, E), B(E1). Comparison with available data.

doi: 10.1016/j.physletb.2015.03.023
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2480.


2015RU02      Phys.Rev. C 91, 041304 (2015)

R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, N.Frommgen, M.Hammen, J.D.Holt, M.Kowalska, K.Kreim, J.Menendez, R.Neugart, G.Neyens, W.Nortershauser, F.Nowacki, J.Papuga, A.Poves, A.Schwenk, J.Simonis, D.T.Yordanov

Ground-state electromagnetic moments of calcium isotopes

NUCLEAR MOMENTS 43,45,47,49,51Ca; measured hyperfine spectra, hyperfine structure constants, J, g factors, magnetic and quadrupole moments using collinear laser spectroscopy (COLLAPS) and radiofrequency quadrupole (RFQ) beam cooler ISCOOL at ISOLDE-CERN facility. Comparison with theoretical predictions using KB3G, GXPF1A, SDPF.SM and three-nucleon forces (NN+3N). Ca beams produced in bombardment of uranium carbide target with 1.4-GeV protons at ISOLDE-CERN.

doi: 10.1103/PhysRevC.91.041304
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014GA20      Phys.Rev.Lett. 113, 082501 (2014)

A.T.Gallant, M.Brodeur, C.Andreoiu, A.Bader, A.Chaudhuri, U.Chowdhury, A.Grossheim, R.Klawitter, A.A.Kwiatkowski, K.G.Leach, A.Lennarz, T.D.Macdonald, B.E.Schultz, J.Lassen, H.Heggen, S.Raeder, A.Teigelhofer, B.A.Brown, A.Magilligan, J.D.Holt, J.Menendez, J.Simonis, A.Schwenk, J.Dilling

Breakdown of the Isobaric Multiplet Mass Equation for the A=20 and 21 Multiplets

ATOMIC MASSES 20,21Mg; measured time-of-flight ion cyclotron resonance; deduced masses. Comparison with shell model calculations, AME2012 mass evaluation.

doi: 10.1103/PhysRevLett.113.082501
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2014HO12      Phys.Rev. C 90, 024312 (2014)

J.D.Holt, J.Menendez, J.Simonis, A.Schwenk

Three-nucleon forces and spectroscopy of neutron-rich calcium isotopes

NUCLEAR STRUCTURE 40,41,42,43,44,45,46,47,48,49,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70Ca; calculated ground-state energies in pf and pfg9/2 shells, convergence of 42Ca and 48Ca ground-state energies as a function of increasing intermediate-state excitations; calculated levels, J, π, B(E2), B(M1) for 43,44,45,46,47,48,49,51,52,53,54,55,56,57Ca, energy convergence. Chiral two- and three-nucleon (NN and 3N) interactions, and many-body perturbation theory (MBPT). Comparison with coupled-cluster calculations, and with available experimental data for A=43-57 Ca isotopes.

doi: 10.1103/PhysRevC.90.024312
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2013WI06      Nature(London) 498, 346 (2013), Erratum Nature(London) 498, 346 (2013)

F.Wienholtz, D.Beck, K.Blaum, Ch.Borgmann, M.Breitenfeldt, R.B.Cakirli, S.George, F.Herfurth, J.D.Holt, M.Kowalska, S.Kreim, D.Lunney, V.Manea, J.Menendez, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Schwenk, J.Simonis, J.Stanja, K.Zuber

Masses of exotic calcium isotopes pin down nuclear forces

ATOMIC MASSES 51,52,53,54Ca; measured TOF, ion cyclotron resonance frequency ratio; deduced masses. ISOLTRAP high-resolution Penning trap, shell-model calculations with KB3G and GXPF1A interactions.

doi: 10.1038/nature12226
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