NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = N.Tsunoda Found 17 matches. 2023KO15 Nature(London) 620, 965 (2023) Y.Kondo, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.A.Douma, A.Ekstrom, Z.Elekes, C.Forssen, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, G.Hagen, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, W.G.Jiang, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.Najafi, T.Nakamura, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, K.Ogata, F.de Oliveira Santos, N.A.Orr, H.Otsu, T.Otsuka, T.Ozaki, V.Panin, T.Papenbrock, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Y.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, N.Shimizu, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, Z.H.Sun, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, N.Tsunoda, T.Uesaka, Y.Utsuno, I.Vernon, H.Wang, Z.Yang, M.Yasuda, K.Yoneda, S.Yoshida First observation of 28O NUCLEAR REACTIONS H(29F, X)27O/28O, E=235 MeV/nucleon; measured reaction products; deduced yields. The hydrogen target was surrounded by the MINOS Time Projection Chamber, SAMURAI spectrometer, RIKEN RI Beam Factory. RADIOACTIVITY 28O(4n), 27O(3n); measured decay products, En, In; deduced decay energy spectra and schemes from the measured momenta using the invariant-mass technique, resonance parameters. Comparison with the large-scale shell-model calculations using the new chiral effective field theory (EEdf3) interaction.
doi: 10.1038/s41586-023-06352-6
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
2020KI19 Phys.Rev. C 102, 054318 (2020) N.Kitamura, K.Wimmer, N.Shimizu, V.M.Bader, C.Bancroft, D.Barofsky, T.Baugher, D.Bazin, J.S.Berryman, V.Bildstein, A.Gade, N.Imai, T.Kroll, C.Langer, J.Lloyd, E.Lunderberg, G.Perdikakis, F.Recchia, T.Redpath, S.Saenz, D.Smalley, S.R.Stroberg, J.A.Tostevin, N.Tsunoda, Y.Utsuno, D.Weisshaar, A.Westerberg Structure of 30Mg explored via in-beam γ-ray spectroscopy NUCLEAR REACTIONS 9Be(31Mg, 30Mg), E=97.9 MeV; 9Be(32Mg, 30Mg), E=99.1 MeV; 9Be(34Si, 30Mg), E=94.8 MeV; 9Be(35P, 30Mg), E=102.3 MeV, [secondary beams from 9Be(48Ca, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 separator for beam purification at NSCL-MSU facility]; measured reaction products using S800 spectrometer, Eγ, Iγ, γγ-coin, Doppler-corrected add-back γ-ray spectra using the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) of seven modules, each module housing four HPGe crystals. 30Mg; deduced levels, J, π, population σ of levels, spectroscopic factors, parallel momentum distributions; calculated T-plots in (Q0, Q2) plane. Comparison with shell-model calculations using the SDPF-M and EEdf1 interactions for all states. Systematics of low-energy levels in 30Mg, 32Si, 34S, 36Ar, 38Ca. Relevance to "island of inversion".
doi: 10.1103/PhysRevC.102.054318
2020NI05 Phys.Rev. C 102, 054327 (2020) H.Nishibata, K.Tajiri, T.Shimoda, A.Odahara, S.Morimoto, S.Kanaya, A.Yagi, H.Kanaoka, M.R.Pearson, C.D.P.Levy, M.Kimura, N.Tsunoda, T.Otsuka Structure of the neutron-rich nucleus 30Mg RADIOACTIVITY 30Na(β-), (β-n), (β-2n)[nuclear-spin-polarized radioactive beam of 28-keV 30Na from U(p, X), E=500 MeV at TRIUMF cyclotron]; measured Eγ, Iγ, γγ and βγ-coin, γγ(θ), β(θ) from spin-polarized 30Na source, isomer half-life by centroid shift of βγ(t) spectrum using eight sets of detector telescopes consisting of a coaxial high-purity Ge detector (HPGe) and thin plastic scintillator at ISAC-TRIUMF facility. 30Mg; deduced levels, J, π, bands, M1 scissors mode, multipolarities, asymmetry parameters for β transitions, β feedings, logft. 30Na; deduce J, π of the ground state, %β-n or Pn and %β-2n or P2n. Comparison with CHFB + LQRPA, AMD + GCM, and large-scale shell model with the EEdf1 interaction, and with previous experimental data. COMPILATION 30Mg; compiled levels, J, π from literature, and evaluation in the ENSDF database.
doi: 10.1103/PhysRevC.102.054327
2020TS03 Nature(London) 587, 66 (2020) N.Tsunoda, T.Otsuka, K.Takayanagi, N.Shimizu, T.Suzuki, Y.Utsuno, S.Yoshida, H.Ueno The impact of nuclear shape on the emergence of the neutron dripline NUCLEAR STRUCTURE 22,24,26,28,30,32,34,36Ne, 24,26,28,30,32,34,36,38,40,42Mg, 23,25,27,29,31,33,35,37Na, 19,21,23,25,27,29F; analyzed available data; calculated 2+ and 4+ energies using configuration interaction, ground-state energies, dripline, magic numbers, J, π and energy levels using nucleon-nucleon interactions, nuclear shapes. Comparison with ENSDF library, available data; deduced mechanism for the formation of the neutron dripline.
doi: 10.1038/s41586-020-2848-x
2019MA29 Phys.Rev. C 99, 044320 (2019) A.Matta, W.N.Catford, N.A.Orr, J.Henderson, P.Ruotsalainen, G.Hackman, A.B.Garnsworthy, F.Delaunay, R.Wilkinson, G.Lotay, Na.Tsunoda, T.Otsuka, A.J.Knapton, G.C.Ball, N.Bernier, C.Burbadge, A.Chester, D.S.Cross, S.Cruz, C.Aa.Diget, T.Domingo, T.E.Drake, L.J.Evitts, F.H.Garcia, S.Hallam, E.MacConnachie, M.Moukaddam, D.Muecher, E.Padilla-Rodal, O.Paetkau, J.Park, J.L.Pore, U.Rizwan, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, J.Williams, M.Williams Shell evolution approaching the N-20 island of inversion: Structure of 29Mg NUCLEAR REACTIONS 2H(28Mg, p), E=8.0 MeV/nucleon, [secondary 28Mg beam from C(p, X), E=520 MeV primary reaction at the ISAC2 of TRIUMF]; measured Ep, Ip, Eγ, Iγ, (recoil)γ-coin, and differential σ(θ) using SHARC array of double-sided silicon strip detectors, TIGRESS array of HPGe detectors, and TRIFOIL plastic scintillator. 29Mg; deduced levels, J, π, spectroscopic factors. Comparison with shell model calculations. Systematics of intruder states in 25,27,29,31Mg. NUCLEAR STRUCTURE 29Mg; calculated levels, J, π, neutron occupancies using shell model with EEdf1 interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.99.044320
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
2019NI04 Phys.Rev. C 99, 024322 (2019) H.Nishibata, S.Kanaya, T.Shimoda, A.Odahara, S.Morimoto, A.Yagi, H.Kanaoka, M.R.Pearson, C.D.P.Levy, M.Kimura, N.Tsunoda, T.Otsuka Structure of 31Mg: Shape coexistence revealed by β-ψ spectroscopy with spin-polarized 31Na RADIOACTIVITY 31Na(β-), (β-n)[from 238U(p, X), E=500 MeV, followed by high-resolution mass separation and spin-polarization of 31Na beam at ISAC-I-TRIUMF facility]; measured β spectra, polarization asymmetry of β particles emitted by the decay of 31Na, Eβ, Iβ, Eγ, Iγ, βγ(θ), γ(polarization), βγ- and γγ-coin, half-life of the 50-keV level in 31Mg by βγ(t) using thin plastic scintillators for β- detection and Ge detectors for γ detection at TRIUMF. 31Mg; deduced levels, J, π, %β-n and %β-2n, deformed rotational bands with Kπ=1/2+ and 1/2-. 31Mg(β-)[from 31Na β- decay]; observed γ rays. Comparison with previous experimental data, and with theoretical calculations. Systematics of energies of the lowest 1/2+, 3/2+, 3/2-, and 7/2- levels in 31Mg, 33Si, 35S, 37Ar, 39Ca. NUCLEAR STRUCTURE 31Mg; calculated levels, J, π using antisymmetrized molecular dynamics (AMD) plus generator coordinate method (GCM), and shell model with the EEdf1 interaction, microscopically derived from chiral effective field theory. Comparison with experimental data. COMPILATION 31Mg; compiled and discussed experimental and evaluated data for levels, J, π from 1984 to 2013.
doi: 10.1103/PhysRevC.99.024322
2018FE05 Phys.Lett. B 779, 124 (2018) B.Fernandez-Dominguez, B.Pietras, W.N.Catford, N.A.Orr, M.Petri, M.Chartier, S.Paschalis, N.Patterson, J.S.Thomas, M.Caamano, T.Otsuka, A.Poves, N.Tsunoda, N.L.Achouri, J.-C.Angelique, N.I.Ashwood, A.Banu, B.Bastin, R.Borcea, J.Brown, F.Delaunay, S.Franchoo, M.Freer, L.Gaudefroy, S.Heil, M.Labiche, B.Laurent, R.C.Lemmon, A.O.Macchiavelli, F.Negoita, E.S.Paul, C.Rodriguez-Tajes, P.Roussel-Chomaz, M.Staniou, M.J.Taylor, L.Trache, G.L.Wilson Re-examining the transition into the N = 20 island of inversion: Structure of 30Mg NUCLEAR REACTIONS C(31Mg, n)30Mg, E=55.1 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, J, π, single-particle σ, spectroscopic factors. Comparison with shell model calculations.
doi: 10.1016/j.physletb.2018.02.002
2018LO20 Phys.Rev.Lett. 121, 262501 (2018) C.Loelius, N.Kobayashi, H.Iwasaki, D.Bazin, J.Belarge, P.C.Bender, B.A.Brown, R.Elder, B.Elman, A.Gade, M.Grinder, S.Heil, A.Hufnagel, B.Longfellow, E.Lunderberg, M.Mathy, T.Otsuka, M.Petri, I.Syndikus, N.Tsunoda, D.Weisshaar, K.Whitmore Enhanced Electric Dipole Strength for the Weakly Bound States in 27Ne NUCLEAR REACTIONS 9Be(29Na, 27Ne), E=90.5 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E1). Comparison with he shell-model calculations with the WBP-M and EEdf1 interactions.
doi: 10.1103/PhysRevLett.121.262501
2018XU05 Phys.Lett. B 782, 619 (2018) Z.Y.Xu, H.Heylen, K.Asahi, F.Boulay, J.M.Daugas, R.P.de Groote, W.Gins, O.Kamalou, A.Koszorus, M.Lykiardopoulou, T.J.Mertzimekis, G.Neyens, H.Nishibata, T.Otsuka, R.Orset, A.Poves, T.Sato, C.Stodel, J.C.Thomas, N.Tsunoda, Y.Utsuno, M.Vandebrouck, X.F.Yang Nuclear moments of the low-lying isomeric 1+ state of 34Al: Investigation on the neutron 1p1h excitation across N=20 in the island of inversion NUCLEAR MOMENTS 32,34Al; measured transition frequencies using β-NMR/NQR techniques; deduced nuclear g factor and quadrupole moments. Comparison with large-scale shell-model calculations using several effective interactions.
doi: 10.1016/j.physletb.2018.06.009
2017TS01 Phys.Rev. C 95, 021304 (2017) N.Tsunoda, T.Otsuka, N.Shimizu, M.Hjorth-Jensen, K.Takayanagi, T.Suzuki Exotic neutron-rich medium-mass nuclei with realistic nuclear forces NUCLEAR STRUCTURE 20,22,24,26,28,30,32Ne, 24,26,28,30,32,34Mg, 28,30,32,34,36Si; calculated energies of the first 2+ and 4+ states, B(E2), expectation values of the number of the particle-hole excitations in the ground states of Mg isotopes. 31,32Mg; calculated levels, J, π. 28O, 30Ne, 32Mg, 34Si, 36S, 38Ar, 40Ca; calculated effective neutron single-particle energies (ESPEs) of N=20 isotones. Extended Kuo-Krenciglowa (EKK) theory of effective nucleon-nucleon interaction for exotic nuclei. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.021304
2014TS01 Phys.Rev. C 89, 024313 (2014) N.Tsunoda, K.Takayanagi, M.Hjorth-Jensen, T.Otsuka Multi-shell effective interactions NUCLEAR STRUCTURE 18O, 18F, 42Ca, 42Sc; calculated nucleon-nucleon effective interaction for shell-model calculations for degenerate and nondegenerate model spaces. 42Ca, 42Sc; calculated levels, J, π, two-body matrix elements. Kuo-Krenciglowa (KK) and extended KK (EKK) methods. Comparison with experimental values.
doi: 10.1103/PhysRevC.89.024313
2013TA19 J.Phys.:Conf.Ser. 445, 012003 (2013) K.Takayanagi, N.Tsunoda, M.Hjorth-Jensen, T.Otsuka Effective Hamiltonian in non-degenerate model space
doi: 10.1088/1742-6596/445/1/012003
2012YU07 Phys.Rev. C 85, 064324 (2012) C.Yuan, T.Suzuki, T.Otsuka, F.Xu, N.Tsunoda Shell-model study of boron, carbon, nitrogen, and oxygen isotopes with a monopole-based universal interaction NUCLEAR STRUCTURE 10,12Be, 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25B, 12,13,14,15,16,17,18,19,20,21,22,23,24,25,26C, 14,15,16,17,18,19,20,21,22,23,24,25,26,27N, 15,16,17,18,19,20,21,22,23,24,25,26,27,28O; calculated ground-state energies, levels, J, π, S(n), S(2n), quadrupole moments, magnetic dipole moments, B(E2), B(GT) using Shell-model. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.064324
2011TS07 Phys.Rev. C 84, 044322 (2011) N.Tsunoda, T.Otsuka, K.Tsukiyama, M.Hjorth-Jensen Renormalization persistency of the tensor force in nuclei
doi: 10.1103/PhysRevC.84.044322
2010OT01 Phys.Rev.Lett. 104, 012501 (2010) T.Otsuka, T.Suzuki, M.Honma, Y.Utsuno, N.Tsunoda, K.Tsukiyama, M.Hjorth-Jensen Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei NUCLEAR STRUCTURE Z=8-20, 28, 40, N=20, 40-50; 40Ca, 68Ni, 78Ni, 90Zr, 100Sn; calculated monopole matrix elements, single-particle energies for pf and sd-shells; deduced monopole-based universal interaction, shell evolution. Comparison with USD, KB3, GXPF1A interactions.
doi: 10.1103/PhysRevLett.104.012501
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