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NSR database version of April 11, 2024.

Search: Author = H.Sagawa

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2024SA06      Phys.Rev. C 109, L011302 (2024)

H.Sagawa, T.Naito, X.Roca-Maza, T.Hatsuda

QCD-based charge symmetry breaking interaction and the Okamoto-Nolen-Schiffer anomaly

doi: 10.1103/PhysRevC.109.L011302
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2024SU01      Phys.Rev. C 109, 014321 (2024)

Sh.Sun, L.-G.Cao, F.-Sh.Zhang, H.Sagawa, G.Colo

Microscopic study of M1 resonances in Sn isotopes

doi: 10.1103/PhysRevC.109.014321
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2023NA15      Phys.Rev. C 107, 054307 (2023)

T.Naito, T.Oishi, H.Sagawa, Z.Wang

Comparative study on charge radii and their kinks at magic numbers

NUCLEAR STRUCTURE 36,38,40,42,44,46,48,50,52,54,56,58,60,62Ca, 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144Sn, 182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222Pb; calculated rms charge radii. 132Sn, 208Pb; calculated single-particle spectra, occupation numbers. Discussed sudden change of the mass-number dependence of the charge radius at the neutron shell gap - so-called kink behavior. Nonrelativistic Skyrme, relativistic mean field (RMF), and the relativistic Hartree-Fock (RHF) calculations. Comparison to experimental data.

doi: 10.1103/PhysRevC.107.054307
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2023NA16      Phys.Rev. C 107, 064302 (2023)

T.Naito, G.Colo, H.Liang, X.Roca-Maza, H.Sagawa

Effects of Coulomb and isospin symmetry breaking interactions on neutron-skin thickness

NUCLEAR STRUCTURE 16O, 40,48Ca, 48Ni, 208Pb; calculated neutron-skin-thickness. 40,48Ca; calculated charge radii difference between 40Ca and 48Ca. 48Ca, 48Ni; calculated mass difference of mirror nuclei.Investigated the influence of the corrections to the Hartree-Fock-Slater approximation by the Coulomb interaction and charge-symmetry breaking term originating from the strong interaction. Comparison to experimental values.

doi: 10.1103/PhysRevC.107.064302
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2023YA02      Phys.Rev. C 107, 014325 (2023)

M.J.Yang, H.Sagawa, C.L.Bai, H.Q.Zhang

Effects of two-particle--two-hole configurations and tensor force on β decay of magic nuclei

RADIOACTIVITY 34Si, 68,78Ni, 132Sn(β-); calculated T1/2, Gamow-Teller strength distribution with respect to daughter nucleus. Self-consistent Hartree-Fock plus subtracted second random-phase approximation (HF+SSRPA) model with Skyrme EDFs (SGII, SAMi, SAMi-T).Comparison to experimental data.

doi: 10.1103/PhysRevC.107.014325
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2022HA26      Phys.Rev. C 106, 034313 (2022)

K.Hagino, H.Sagawa

Spatial correlation of a particle-hole pair with a repulsive isovector interaction

NUCLEAR STRUCTURE 56Co; calculated energies, and components of the wave functions for the 4+ and 2+ states. 56Co, 40K; calculated uncorrelated and the correlated proton-hole distribution two-dimensional contours of the 4+ and 2+ states in 56Co, and 3- state in 40K using spatial correlation of an isovector particle-hole pair by Hartree-Fock + Tamm-Dancoff approximation with Skyrme interaction; deduced large concentration of the two-body density at positions where the neutron particle and the proton hole states located on the opposite sides to each other with respect to the core nucleus due to repulsive isovector residual interaction, in contrast to attractive pairing interaction between the valence neutrons in 11Li and 6He.

doi: 10.1103/PhysRevC.106.034313
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2022LE07      Phys.Lett. B 829, 137057 (2022)

B.Le Crom, M.Assie, Y.Blumenfeld, J.Guillot, H.Sagawa, T.Suzuki, M.Honma, N.L.Achouri, B.Bastin, R.Borcea, W.N.Catford, E.Clement, L.Caceres, M.Caamano, A.Corsi, G.De France, F.Delaunay, N.De Sereville, B.Fernandez-Dominguez, M.Fisichella, S.Franchoo, A.Georgiadou, J.Gibelin, A.Gillibert, F.Hammache, O.Kamalou, A.Knapton, V.Lapoux, S.Leblond, A.O.Macchiavelli, F.M.Marques, A.Matta, L.Menager, P.Morfouace, N.A.Orr, J.Pancin, X.Pereira-Lopez, L.Perrot, J.Piot, E.Pollacco, D.Ramos, T.Roger, F.Rotaru, A.M.Sanchez-Benitez, M.Senoville, O.Sorlin, M.Stanoiu, I.Stefan, C.Stodel, D.Suzuki, J.-C.Thomas, M.Vandebrouck

Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer

NUCLEAR REACTIONS 1H(56Ni, 3He)54Co, E=30.5 MeV/nucleon; 1H(52Fe, 3He)50Mn, E=31.2 MeV/nucleon; measured reaction products; deduced yields, σ(θ), partial level schemes, J, π, isovector and isoscalar components of neutron-proton pairing. Comparison with with second-order distorted-wave Born approximation (DWBA) calculations. GANIL/LISE facility, MUST2 telescopes.

doi: 10.1016/j.physletb.2022.137057
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2022NA10      Phys.Rev. C 105, L021304 (2022)

T.Naito, G.Colo, H.Liang, X.Roca-Maza, H.Sagawa

Toward ab initio charge symmetry breaking in nuclear energy density functionals

NUCLEAR STRUCTURE 48Ca, 208Pb; calculated neutron skin thickness, mass difference for mirror nuclei 48Ca-48Ni, dependence of neutron-skin thickness on the charge symmetry breaking strength s0. Comparison to experimental data.

doi: 10.1103/PhysRevC.105.L021304
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2022NA38      Phys.Rev. C 106, L061306 (2022)

T.Naito, X.Roca-Maza, G.Colo, H.Liang, H.Sagawa

Isospin symmetry breaking in the charge radius difference of mirror nuclei

NUCLEAR STRUCTURE 48Ca, 48Ni; calculated charge radius difference of mirror nuclei. Discussed the connection of obtained values with the nuclear equation of state and effect of isospin symmetry breaking on such relation. Hartree-Fock calculations with SAMi-J family of energy density functionals.

doi: 10.1103/PhysRevC.106.L061306
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2022SA22      Phys.Lett. B 829, 137072 (2022)

H.Sagawa, S.Yoshida, T.Naito, T.Uesaka, J.Zenihiro, J.Tanaka, T.Suzuki

Isovector density and isospin impurity in 40Ca

NUCLEAR STRUCTURE 40Ca; calculated proton and neutron densities with modified occupation probabilities of orbits around the Fermi energy, isospin impurity; deduced isoscalar (IS) and isovector (IV) densities. Comparison with theoretical densities calculated by Skyrme Hatree-Fock (HF) models.

doi: 10.1016/j.physletb.2022.137072
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2022TA05      Phys.Rev. C 105, 044324 (2022)

Y.Tanimura, H.Sagawa, T.-T.Sun, E.Hiyama

Ξ hypernuclei 15ΞC and 12ΞBe and the ΞN two-body interaction

NUCLEAR STRUCTURE 15C, 12Be; calculated levels, J, π, energy spectrum of the 15C and 12Be Ξ hypernuclei. Relativistic mean filed model taking into account meson exchange ΞN interactions.

doi: 10.1103/PhysRevC.105.044324
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2022XU09      Phys.Lett. B 833, 137333 (2022)

J.-Y.Xu, Z.-Z.Li, B.-H.Sun, Y.-F.Niu, X.Roca-Maza, H.Sagawa, I.Tanihata

Constraining equation of state of nuclear matter by charge-changing cross section measurements of mirror nuclei

NUCLEAR STRUCTURE 30Si, 30S; analyzed available data; calculated the charge changing σ difference for both the Skyrme-Hartree-Fock theory (SHF) and covariant (relativistic) density functionals (CDF).

doi: 10.1016/j.physletb.2022.137333
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2022YA20      Phys.Rev. C 106, 014319 (2022)

M.J.Yang, C.L.Bai, H.Sagawa, H.Q.Zhang

Gamow-Teller transitions in magic nuclei calculated by the charge-exchange subtracted second random-phase approximation

NUCLEAR STRUCTURE 48Ca, 90Zr, 132Sn, 208Pb; calculated Gamow-Teller (GT) strength distributions as function of excitation energy and peak height; evaluated quenching factors of the Ikeda sum rule due to couplings to two-particle two-hole (2p-2h) configurations, effects of tensor interactions on the excitation energies and the quenching factors of GT strength distributions. Self-consistent Hartree-Fock (HF) plus charge-exchange subtracted second random-phase approximation (SSRPA) calculations with several different Skyrme energy density functions (EDFs). Comparison with experimental data.

doi: 10.1103/PhysRevC.106.014319
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2022ZH10      Prog.Theor.Exp.Phys. 2022, 023D01 (2022)

Y.Zhang, H.Sagawa, E.Hiyama

Prediction of exotic hyperon halos in neutron-rich Zr hypernuclei

NUCLEAR STRUCTURE 90,91,92Zr, 114,115,116Zr, 136,137,138Zr; calculated neutron single-particle energies and potentials in the hypernuclei, occupation probabilities with the Skyrme HFB model. Comparison with available data.

doi: 10.1093/ptep/ptac004
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2021HA35      Phys.Rev. C 104, 034306 (2021)

E.Ha, S.Kim, M.-K.Cheoun, H.Sagawa

Isoscalar pairing correlations by the tensor force in the ground states of 12C, 16O, 20Ne, and 32S nuclei

NUCLEAR STRUCTURE 12C, 16O, 20Ne, 32S; analyzed empirical pairing gaps from experimental and theoretical β2 deformation parameters and experimental quadrupole moments; calculated ratio of isovector (IV) and isoscalar (IS) pairing gap to the total neutron-proton pairing, tensor force (TF) effects on pairing matrix elements (PMEs), number of pairs in terms of the effective neutron-proton (T=0) coupling strength. Deformed Bardeen-Cooper-Schrieffer (BCS) model with Brueckner G-matrix derived from the charge-dependent Bonn potential for investigation of role of the tensor force on the pairing correlations in the ground-state structure.

NUCLEAR REACTIONS 12C(12C, X), E=0.250, 1.05, 2.01 GeV; calculated ratios of the neutron-proton knockout to neutron-neutron and proton-proton knockout cross sections. Deformed BCS model with Brueckner G-matrix. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.034306
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2021SA05      Phys.Rev. C 103, 014308 (2021)

M.Sasano, H.Sagawa, T.Suzuki, M.Honma

Energy-weighted sum rule for Gamow-Teller giant resonances in high-spin isomeric states of N = Z nuclei

NUCLEAR STRUCTURE 52mFe, 94mAg; calculated energies of Gamow-Teller (GT) giant resonances and isoscalar M1 transitions in N=Z nuclei, (12+) and (21+) isomeric high-spin state of 52Fe and 94Ag, respectively; extracted energy-weighted sum rules (EWSR). Comparison with large-scale shell-model calculations. Relevance to evaluation of short-range part of the spin residual interaction, to describe the onset of the pion condensation in nuclear matter.

doi: 10.1103/PhysRevC.103.014308
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2021SA40      Phys.Rev. C 104, 039801 (2021)

H.Sagawa, G.Colo, L.Cao

Comment on "Breakdown of the tensor component in the Skyrme energy density functional"

doi: 10.1103/PhysRevC.104.039801
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2021WU12      Phys.Rev. C 104, 054303 (2021)

D.Wu, C.L.Bai, H.Sagawa, S.Nishimura, H.Q.Zhang

β-delayed one-neutron emission probabilities within a neural network model

RADIOACTIVITY Z=2-57(β-n); calculated β--delayed one-neutron emission probabilities P1n using machine learning (ML) technique and feed-forward neural network (FNN) with root mean squared Prop (RMSProp) method; analyzed correlations between P1n, half-lives, Q-values, neutron shell effects, distance from the first β--delayed neutron emitter, and competitions between β--delayed one- and two- neutron emissions P1n and P2n. 109,110,111,112,113,114,115,116Tc, 116,117,118,119,120,121Ru, 118,119,120,121,122,123,124Rh, 121,122,123,124,125,126,127,128Pd, 124,125,126,127,128,129Ag, 127,128,129,130Cd(β-n); 79Cu, 80Zn, 81Ga, 128Pd, 129Ag, 130Ag(β-n); calculated β--delayed one-neutron emission probabilities P1n using ML-FNN techniques, and compared with experimental and evaluated data in literature, and with theoretical calculations using FRDM12+(Q)RPA+HF and RHB+RQRPA approaches. Relevance to r-process nuclei in nucleosynthesis, and waiting-point nuclei at N=50 and N=82.

doi: 10.1103/PhysRevC.104.054303
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2021YA14      Phys.Rev. C 103, 054308 (2021)

M.J.Yang, C.L.Bai, H.Sagawa, H.Q.Zhang

Effects of the Skyrme tensor force on 0+, 2+, and 3- states in 16O and 40C nuclei within the second random-phase approximation

NUCLEAR STRUCTURE 16O, 40Ca; calculated isoscalar and isovector strength distributions and energy moments of the monopole (0+), quadrupole (2+) and octupole (3-) transitions B(E0), B(E2) and B(E3), major 1p-1h and 2p-2h configurations; deduced major impact of tensor force in SGII+Te1 on the coupling between 1p-1h and 2p-2h model spaces. Subtracted second random-phase approximation (SSRPA) method with Skyrme energy density functional. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.054308
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2021ZH20      Phys.Rev. C 103, 034321 (2021)

Y.Zhang, H.Sagawa, E.Hiyama

Hyperon halo structure of C and B isotopes

NUCLEAR STRUCTURE 8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23C, 8,9,10,11,12,13,14,15,16,17,18,19,20,21,22B; calculated binding energies, rms radii, B(E1) of single-Λstate hypernuclei, binding energies of carbon and boron isotopes using Hartree-Fock model with several Skyrme-type nucleon-nucleon and Λ-nucleon interactions. Comparison with available experimental data.

doi: 10.1103/PhysRevC.103.034321
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2020HA06      Prog.Theor.Exp.Phys. 2020, 023D01 (2020)

K.Hagino, H.Sagawa, S.Kanaya, A.Odahara

Resonance width for a particle-core coupling model with a square-well potential

doi: 10.1093/ptep/ptz163
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2020RO01      Phys.Rev. C 101, 014320 (2020)

X.Roca-Maza, H.Sagawa, G.Colo

Double charge-exchange phonon states

NUCLEAR STRUCTURE 48Ca, 78Ni, 90Zr, 132,176Sn, 208Pb; calculated energy differences between the isobaric analog states (IAS) and double isobaric analog states (DIAS), contribution of the Coulomb direct and exchange terms to these energy differences, excitation energies of single and double Gamow-Teller giant resonances (GTR) using double and quartic commutator relations for double charge-exchange (DCX) phonon states in neutron-rich nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.014320
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2020RO23      Phys.Rev. C 102, 064303 (2020)

X.Roca-Maza, H.Sagawa, G.Colo

Isobaric analog state energy in deformed nuclei: A toy model

NUCLEAR STRUCTURE 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Sn; calculated energies and isospin mixing probabilities of the isobaric analog states (IAS). 102Pd, 106Cd, 112Sn, 120Te, 124Xe, 130Ba, 136,138Ce, 142Nd, 144Sm, 156,158Dy, 162,164Er, 168Yb, 174,176Hf, 180W, 184Os, 190Pt, 196Hg; calculated deformation parameters, proton rms radii, and neutron skin thicknesses, direct Coulomb, exchange Coulomb and the isospin mixing contributions to the IAS, deformation effect on the IAS energy. Microscopic deformed Hartree-Fock-Bogoliubov (HFB) calculations with the SAMi energy density functional. Comparison with available experimental data. Relevance to planned experiments in the neutron-deficient nuclei proposed in the LUNESTAR project at RCNP, Osaka University.

doi: 10.1103/PhysRevC.102.064303
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2020WU09      Phys.Rev. C 102, 054323 (2020)

D.Wu, C.L.Bai, H.Sagawa, H.Q.Zhang

Calculation of nuclear charge radii with a trained feed-forward neural network

NUCLEAR STRUCTURE 40,42,44,46,48,50,52Ca, 108,110,112,114,116,118,120,122,124,126,128,130,132,134Sn, 138,140,142,144,146,148,150,152,154Sm, 182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212Pb; calculated nuclear charge radii, correlation between the symmetry energy and charge radii of Ca isotopes, and confirmed this correlation by Skyrme Hartree-Fock-Bogoliubov calculation. A multilayer feed-forward neural network model (ML-FNN).

doi: 10.1103/PhysRevC.102.054323
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2020YO05      Phys.Rev. C 102, 064307 (2020)

S.Yoshida, H.Sagawa, J.Zenihiro, T.Uesaka

Trajectory in 2D plot of isoscalar and isovector densities of 48Ca and 208Pb, and symmetry energy

NUCLEAR STRUCTURE 48Ca, 208Pb; calculated nuclear matter incompressibility, volume, slope, and second derivative terms of symmetry energy, proton and neutron rms radii, neutron skin thickness, proton and neutron densities, 2D plot of experimental isoscalar (IS) and isovector (IV) densities, asymmetric isospin term in the nuclear incompressibility. Skyrme and RMF mean-field models with several modern relativistic and nonrelativistic energy density functionals (EDFs). Comparison with experimental data.

doi: 10.1103/PhysRevC.102.064307
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2019CA22      Phys.Rev. C 100, 054324 (2019)

L.-G.Cao, S.-S.Zhang, H.Sagawa

Quenching factor of Gamow-Teller and spin dipole giant resonances

NUCLEAR STRUCTURE 48Ca, 90Zr, 132Sn, 208Pb; calculated Gamow-Teller (GT) and spin-dipole (SD) strength distributions, and sum rules of GT-, SD-, and SD+ resonances using self-consistent Hartree-Fock plus random phase approximation (RPA) method, with Skyrme forces SAMi and SAMi-T with and tensor interactions. Comparison with available experimental data.

doi: 10.1103/PhysRevC.100.054324
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2019HA19      Phys.Rev. C 99, 064304 (2019)

E.Ha, M.-K.Cheoun, H.Sagawa

Effects of the Coulomb and the spin-orbit interaction in a deformed mean field on the pairing correlations in N=Z nuclei

NUCLEAR STRUCTURE 24Mg, 36Ar, 48Cr, 64Ge, 108Xe, 128Gd; calculated np-, nn-, pp-pairing gaps, β2 deformation parameters, neutron and proton occupation probabilities, neutron and proton single particle state energies (SPSEs), and ratio of isovector and isoscalar pairing interaction gap to the total np-pairing gap using deformed BCS approach, with and without Coulomb and spin-orbit (SO) interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.99.064304
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2019HA41      Acta Phys.Pol. B50, 697 (2019)

E.Ha, M.-K.Cheoun, H.Sagawa

Neutron-Proton Pairing Correlations and Deformation for N=Z Nuclei in sd- and pf-shell by Deformed BCS and Deformed QRPA

NUCLEAR STRUCTURE 24Mg, 72Kr; calculated ground-state energies, neutron and proton single particle state energies (SPSEs). Deformed BCS approach.

NUCLEAR REACTIONS 56Ni(p, n), E not given; calculated B(GT); deducedeffects of the np pairing correlations. Deformed QRPA approach

doi: 10.5506/aphyspolb.50.697
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2019SA57      Eur.Phys.J. A 55, 227 (2019)

H.Sagawa, G.Colo, X.Roca-Maza, Y.Niu

Collective excitations involving spin and isospin degrees of freedom

doi: 10.1140/epja/i2019-12923-y
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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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2018HA09      Phys.Rev. C 97, 024320 (2018)

E.Ha, M.-K.Cheoun, H.Sagawa

Spin singlet and spin triplet pairing correlations on shape evolution in sd-shell N=Z Nuclei

NUCLEAR STRUCTURE 24Mg, 28Si, 32S; calculated energies of single-particle states, ground-state energies, total single-particle energies (TSPEs), np pairing strength, proton and neutron Fermi energies as function of deformation; deduced impact of interplay between the two pairing interactions on determining the deformation of the ground states. Axially symmetric deformed Woods-Saxon (DWS) and deformed BCS (DBCS) calculations, with T=0 and T=1 pairing correlations.

doi: 10.1103/PhysRevC.97.024320
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2018HA23      Phys.Rev. C 97, 064322 (2018)

E.Ha, M.-K.Cheoun, H.Sagawa, W.Y.So

Neutron-proton pairing correlations and deformation for N=Z nuclei in the pf shell within the deformed BCS and Hartree-Fock-Bogoliubov approach

NUCLEAR STRUCTURE 44Ti, 48Cr, 52Fe, 64Ge, 68Se, 72Kr, 76Sr; calculated proton and neutron pairing gaps, Fermi energies of protons and neutrons, energies of single particle states in 44Ti and 64Ge as a function of deformation parameter β2, pairing correlation energies and ground-state energies with and without neutron-proton pairing and three times enhanced T=0 pairing as a function of β2 parameter, neutron occupation probability in 68Se, and strength parameters in 72Kr. Deformed Bardeen-Cooper-Schrieffer (DBCS) and deformed Hartree-Fock-Bogoliubov (DHFB) approach for N=Z nuclei, with deformed Woods-Saxon potential calculations for single-particle states.

doi: 10.1103/PhysRevC.97.064322
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2018LI32      Phys.Rev. C 98, 014311 (2018)

H.Z.Liang, H.Sagawa, M.Sasano, T.Suzuki, M.Honma

Gamow-Teller transitions from high-spin isomers in N = Z nuclei

RADIOACTIVITY 52Fe, 94Ag(β-); calculated Gamow-Teller transition strength distributions from 12+ isomeric state and g.s. in 52Fe and 21+ isomeric state and g.s. in 94Ag using sum-rule approach and shell model calculations; deduced stronger Gamow-Teller strengths from the high-spin states as compared to those from the low-spin ground states.

doi: 10.1103/PhysRevC.98.014311
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2018LU16      Eur.Phys.J. A 54, 193 (2018)

Z.-J.Luo, K.Yu, X.-R.Zhou, J.-W.Cui, H.Sagawa

Effects of deformation, pairing and tensor correlation on the evolution of bubble structure within the Skyrme-Hartree-Fock method

NUCLEAR STRUCTURE 46Ar; calculated energy surface vs quadrupole deformation, proton density distributions, sp energy levels using axially symmetric DSHF (Deformed Skyrme-Hartree-Fock) approach (several Skyrme forces used). 43Cl; calculated partial-wave decomposition of the proton density.

doi: 10.1140/epja/i2018-12620-5
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2018RO08      Phys.Rev.Lett. 120, 202501 (2018)

X. Roca-Maza, G. Colo, H. Sagawa

Nuclear Symmetry Energy and the Breaking of the Isospin Symmetry: How Do They Reconcile with Each Other?

NUCLEAR STRUCTURE 208Pb; analyzed available data; calculated isobaric analog states using state-of-the-art Hartree-Fock plus random phase approximation.

doi: 10.1103/PhysRevLett.120.202501
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2018SA18      Phys.Rev. C 97, 054333 (2018)

H.Sagawa, T.Suzuki

Isoscalar and isovector spin response in sd-shell nuclei

NUCLEAR STRUCTURE 20Ne, 24Mg, 28Si, 32S, 36Ar; calculated isoscalar (IS) and isovector (IV) differential B(M1)(E), summed IS and IV B(M1) strengths, and proton-neutron spin-spin correlations by shell model calculations using USDB effective interaction with and without IS spin-triplet pairing matrices and effective IV spin operator. 12C; IS and IV 1+ states, and B(M1) used as reference. A=19, 21, 23, 25, 27, 29, 31, 33, 35, 37; calculated effect of effective spin operators and enhanced IS pairing on β-decay rates between mirror nuclei with T=1/2 and Tz=+1/2 and -1/2, and IS magnetic moments in sd-shell mirror nuclei using shell-model and USDB and USDB** interactions with the bare spin g factor, as well as with USDBqGT and USDB**qGT with Towner's effective Gamow-Teller operator. Comparison with experimental values.

doi: 10.1103/PhysRevC.97.054333
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2017HA05      Phys.Rev. C 95, 024304 (2017)

K.Hagino, H.Sagawa

New concept for the pairing anti-halo effect as a localized wave packet of quasiparticles

doi: 10.1103/PhysRevC.95.024304
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2017HA32      Phys.Rev. C 96, 064312 (2017)

I.Hamamoto, H.Sagawa

Interplay between isoscalar and isovector correlations in neutron-rich nuclei

NUCLEAR STRUCTURE 22,24O; calculated isoscalar compression dipole (ISCD) and isovector dipole (IVD) strengths for 1- giant resonance as a function of excitation energy, radial transition densities. Self-consistent Hartree-Fock plus the random-phase approximation (RPA) with the Skyrme interaction, SLy4.

doi: 10.1103/PhysRevC.96.064312
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2017UR04      Phys.Rev. C 96, 064311 (2017)

Y.Urata, K.Hagino, H.Sagawa

Role of deformation in odd-even staggering in reaction cross sections for 30, 31, 32Ne and 36, 37, 38Mg isotopes

NUCLEAR REACTIONS 12C(30Ne, X), (31Ne, X), (32Ne, X), (36Mg, X), (37Mg, X), (38Mg, X), E=240 MeV/nucleon; analyzed odd-even staggering in experimental cross sections by including ground-state deformation of these nuclei, and with ground-state density from deformed Woods-Saxon potential, and pairing correlation from Hartree-Fock-Bogoliubov method; discussed role of pairing antihalo effect.

doi: 10.1103/PhysRevC.96.064311
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2016HA07      Phys.Rev. C 93, 034330 (2016)

K.Hagino, H.Sagawa

Decay dynamics of the unbound 25O and 26O nuclei

doi: 10.1103/PhysRevC.93.034330
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2016HA08      Few-Body Systems 57, 185 (2016)

K.Hagino, H.Sagawa

Are There Good Probes for the Di-Neutron Correlation in Light Neutron-Rich Nuclei?

NUCLEAR STRUCTURE 11Li; calculated two-particle densities. Comparison with available data.

RADIOACTIVITY 26O(2n); calculated the decay energy spectrum for two-neutron emission decay, En, In, angular correlation for two emitted neutrons. Comparison with available data.

doi: 10.1007/s00601-015-1027-3
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2016HI05      Phys.Scr. 91, 093001 (2016)

E.Hiyama, Y.Yamamoto, H.Sagawa

The structure of hypernuclei and hyperon mixing in neutron-star matter

NUCLEAR STRUCTURE 7,8,9,10Be, 8,9,10,11B, 11,12,13C, 27,28Si, 50,51V, 88,89Y, 138,139La, 207,208Pb, 6H, 6,7He, 20,21,22,23,24,25,26,27,28,29,30Ne, 40,41Ca; analyzed available hypernuclei data; calculated excited state energies and splittings, J, π, hyperon separation and binding energies, deformations, hyperonic neutron-star matter, energy density.

doi: 10.1088/0031-8949/91/9/093001
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2016MO08      At.Data Nucl.Data Tables 109-110, 1 (2016)

P.Moller, A.J.Sierk, T.Ichikawa, H.Sagawa

Nuclear ground-state masses and deformations: FRDM(2012)

NUCLEAR STRUCTURE A=16-339; calculated ground-state deformation parameters, β-decay Q-values, T1/2 and delayed neutron emission probabilities, neutron- and proton-separation energies, J, α-decay Q-value and T1/2, atomic masses. Comparison with available data.

doi: 10.1016/j.adt.2015.10.002
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2016NI17      Phys.Rev. C 94, 064328 (2016)

Y.F.Niu, G.Colo, E.Vigezzi, C.L.Bai, H.Sagawa

Quasiparticle random-phase approximation with quasiparticle-vibration coupling: Application to the Gamow-Teller response of the superfluid nucleus 120Sn

NUCLEAR STRUCTURE 120Sn; calculated Gamow-Teller strength distributions with and without isoscalar pairing, and their cumulative sums using different configuration spaces, energies and reduced transition probabilities of the lowest phonons of different multipolarities, microscopic structure of the main Gamow-Teller peaks. Self-consistent quasiparticle random-phase approximation (QRPA) plus quasiparticle-vibration coupling (QPVC) model with Skyrme interactions. Comparison with experimental data from (3He, t) and (p, n) reactions.

doi: 10.1103/PhysRevC.94.064328
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2016RO25      Phys.Rev. C 94, 044313 (2016)

X.Roca-Maza, L.-G.Cao, G.Colo, H.Sagawa

Fully self-consistent study of charge-exchange resonances and the impact on the symmetry energy parameters

NUCLEAR STRUCTURE 90Zr, 208Pb; calculated energy of the IAS and strength for 90Zr, single-particle proton levels in 208Pb, energy of the IAS as a function of neutron skin in 208Pb, energy difference between the anti-analog giant dipole resonance (AGDR) and the isobaric analog state; deduced correlations between the neutron-skin thickness and either the symmetry energy at saturation density or the corresponding slope parameter. HF+RPA calculations with the exchange term of the two-body Coulomb interaction treated exactly without Slater approximation, and the two-parameters spin-orbit interaction is treated in a consistent way within the energy density functional theory using several SAMi-J interactions. Comparison with available experimental information.

doi: 10.1103/PhysRevC.94.044313
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2016SA45      Phys.Rev. C 94, 041303 (2016)

H.Sagawa, T.Suzuki, M.Sasano

Effect of isoscalar spin-triplet pairings on spin-isospin responses in sd-shell nuclei

NUCLEAR STRUCTURE 24Mg, 28Si, 32S, 36Ar; calculated isoscalar (IS) and isovector (IV) spin-M1 transition strengths, accumulative sums of the IS- and IV-spin-M1 strengths, proton-neutron spin-spin correlation. Shell-model calculations with USDB interactions in full sd-shell model space for even-even N=Z sd-shell nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.041303
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2016SA55      Phys.Rev. C 94, 064325 (2016)

H.Sagawa, T.Uesaka

Sum rule study for double Gamow-Teller states

NUCLEAR STRUCTURE 6,8He, 14C, 18,20O, 42,44,46,48Ca, 90Zr; analyzed sum rule values for double Gamow-Teller (DGT) transitions by double spin-isospin operator (σt-)2 to the 0+ and 2+ states, and double isobaric analog states (DIAS) through various formulae and shell-model calculations using different interactions.

doi: 10.1103/PhysRevC.94.064325
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2016SU27      Phys.Rev. C 94, 064319 (2016)

T.T.Sun, E.Hiyama, H.Sagawa, H.-J.Schulze, J.Meng

Mean-field approaches for Ξ- hypernuclei and current experimental data

NUCLEAR STRUCTURE 15C, 12Be; calculated binding energies of hypernuclei with Ξ- hyperon and the core nuclei of 14N and 11B; reproduced results for observed 2015 Kiso event for 15C at the KEK-E373 experiment. Relativistic-mean-field and Skyrme-Hartree-Fock models.

doi: 10.1103/PhysRevC.94.064319
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2016TA12      Phys.Rev. C 93, 064319 (2016)

Y.Tanimura, H.Sagawa

Three-body model for an isoscalar spin-triplet neutron-proton pair in 102Sb

NUCLEAR STRUCTURE 102Sb; calculated energies of isospin T=0 and 1 states, 0+ and 1+ in 102Sb, B(GT) (102Sn to 102Sb) strength distribution. 100Sn core+p+n three-body model with a model space based on Skyrme and relativistic mean-field calculations using three nonrelativistic and three relativistic energy density functionals (EDFs).

doi: 10.1103/PhysRevC.93.064319
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2016ZH29      Phys.Rev. C 94, 024331 (2016)

X.-R.Zhou, E.Hiyama, H.Sagawa

Exotic structure of medium-heavy hypernuclei in the Skyrme Hartree-Fock model

NUCLEAR STRUCTURE 36,37,38,39,40Ar, 40,41Ca; calculated energy surfaces as a function of deformation parameter β2, quadrupole deformation parameters, root mean square radii, binding energies, Λ separation energies for the ground states and superdeformed (SD) states, and two-dimensional density distributions for 37,38,39,40Ar, 41Ca hypernuclei and their core nuclei 36,37,38,39Ar, 40Ca. 37,38,39,40Ar, 41Ca; calculated Λ separation energies and spatial overlap between Λ and nucleons at the ground state and SD minima for hypernuclei. Skyrme Hartree-Fock (SHF)+BCS model with a microscopic ΛN interaction. Comparison with antisymmetrized molecular dynamics (AMD), and relativistic mean field (RMF) calculations.

doi: 10.1103/PhysRevC.94.024331
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2016ZH45      Phys.Rev. C 94, 045803 (2016); Erratum Phys.Rev. C 102, 019905 (2020)

Z.-Y.Zhu, A.Li, J.-N.Hu, H.Sagawa

Δ(1232) effects in density-dependent relativistic Hartree-Fock theory and neutron stars

doi: 10.1103/PhysRevC.94.045803
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2015CA20      Phys.Rev. C 92, 034308 (2015)

L.-G.Cao, X.Roca-Maza, G.Colo, H.Sagawa

Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated neutron skin thickness, energies of anti-analog giant dipole resonance (AGDR), isobaric analog state (IAS) and isovector giant dipole resonance (IVGDR). Droplet model, and fully self-consistent Hartree-Fock (HF) plus charge-exchange random phase approximation (RPA) framework. Comparison with experimental data.

doi: 10.1103/PhysRevC.92.034308
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2015FU08      Phys.Rev. C 91, 064316 (2015)

Y.Fujita, H.Fujita, T.Adachi, G.Susoy, A.Algora, C.L.Bai, G.Colo, M.Csatlos, J.M.Deaven, E.Estevez Aguado, C.J.Guess, J.Gulyas, K.Hatanaka, K.Hirota, M.Honma, D.Ishikawa, A.Krasznahorkay, H.Matsubara, R.Meharchand, F.Molina, H.Nakada, H.Okamura, H.J.Ong, T.Otsuka, G.Perdikakis, B.Rubio, H.Sagawa, P.Sarriguren, C.Scholl, Y.Shimbara, E.J.Stephenson, T.Suzuki, A.Tamii, J.H.Thies, K.Yoshida, R.G.T.Zegers, J.Zenihiro

High-resolution study of Gamow-Teller excitations in the 42Ca (3He, t) 42Sc reaction and the observation of a "low-energy super-Gamow-Teller state"

NUCLEAR REACTIONS 42Ca(3He, t), E=140 MeV/nucleon; measured triton spectra, σ(θ) using Grand Raiden spectrometer at RCNP facility. 42Sc; deduced levels, J, π, IAS, isospin of excited GT states, L-transfers, B(GT), configurations. Comparison of B(GT) values with those for 44,48Sc, and from 42Ti β+ decay to 42Sc. Isospin assignments made in comparison with results from 42Ca(p, p') reaction. Comparison with shell-model calculations using GXPF1J interaction. 12N, 16F, 40,44Sc; observed peaks from contaminants in the target material, and appropriate corrections applied to triton spectra for 42Sc.

doi: 10.1103/PhysRevC.91.064316
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2015IS10      Prog.Theor.Exp.Phys. 2015, 103D02 (2015)

M.Isaka, M.Kimura, E.Hiyama, H.Sagawa

Superdeformation of Ar hypernuclei

NUCLEAR STRUCTURE 37,39,41Ar; calculated separation energies of the ground and superdeformed (SD) states in hypernuclei. Framework of antisymmetrized molecular dynamics (AMD).

doi: 10.1093/ptep/ptv138
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2015SA32      Eur.Phys.J. A 51, 102 (2015)

H.Sagawa, K.Hagino

Theoretical models for exotic nuclei

doi: 10.1140/epja/i2015-15102-4
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2014BA55      Phys.Rev. C 90, 054335 (2014)

C.L.Bai, H.Sagawa, G.Colo, Y.Fujita, H.Q.Zhang, X.Z.Zhang, F.R.Xu

Low-energy collective Gamow-Teller states and isoscalar pairing interaction

NUCLEAR STRUCTURE 42Ca, 46Ti, 50Cr, 54Fe, 58Ni; calculate neutron pairing gaps, Gamow-Teller (GT) strength distributions and sum rule values for IAR states, energy differences between the lowest GT and IAR states in N=Z+2 nuclei. HFB+QRPA calculations with the Skyrme forces SGII, SGII+Te3, and SAMi. Comparison with experimental values.

doi: 10.1103/PhysRevC.90.054335
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2014CA07      Phys.Rev. C 89, 044314 (2014)

L.-G.Cao, G.Colo, H.Sagawa, P.F.Bortignon

Properties of single-particle states in a fully self-consistent particle-vibration coupling approach

NUCLEAR STRUCTURE 40Ca, 208Pb; calculated levels, J, π, B(Eλ), energies of neutron single-particle states, spectroscopic factors, effective neutron mass around Fermi surface. Fully self-consistent particle-vibration coupling (PVC) approach within the framework of Skyrme energy density functional theory with SLy5 and T44 parameter sets, and random phase approximation for phonons. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044314
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2014CO07      Eur.Phys.J. A 50, 26 (2014)

G.Colo, U.Garg, H.Sagawa

Symmetry energy from the nuclear collective motion: constraints from dipole, quadrupole, monopole and spin-dipole resonances

NUCLEAR STRUCTURE 90Zr; calculated proton, neutron and charge radii using microscopic Skyrme RPA, data on dipole resonances and different interactions. Compared with data.

doi: 10.1140/epja/i2014-14026-9
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2014FU02      Phys.Rev.Lett. 112, 112502 (2014)

Y.Fujita, H.Fujita, T.Adachi, C.L.Bai, A.Algora, G.P.A.Berg, P.von Brentano, G.Colo, M.Csatlos, J.M.Deaven, E.Estevez Aguado, C.Fransen, D.De Frenne, K.Fujita, E.Ganioglu, C.J.Guess, J.Gulyas, K.Hatanaka, K.Hirota, M.Honma, D.Ishikawa, E.Jacobs, A.Krasznahorkay, H.Matsubara, K.Matsuyanagi, R.Meharchand, F.Molina, K.Muto, K.Nakanishi, A.Negret, H.Okamura, H.J.Ong, T.Otsuka, N.Pietralla, G.Perdikakis, L.Popescu, B.Rubio, H.Sagawa, P.Sarriguren, C.Scholl, Y.Shimbara, Y.Shimizu, G.Susoy, T.Suzuki, Y.Tameshige, A.Tamii, J.H.Thies, M.Uchida, T.Wakasa, M.Yosoi, R.G.T.Zegers, K.O.Zell, J.Zenihiro

Observation of Low- and High-Energy Gamow-Teller Phonon Excitations in Nuclei

NUCLEAR REACTIONS 42Ca, 46Ti, 50Cr, 54Fe(3He, t), E=140 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced cumulative-sum strengths of the experimental B(GT) values in the final nuclei, two kinds of GT phonon states. GXPF1J, quasi particle random phase approximation (QRPA) framework based on a self-consistent Hartree-Fock mean field with Skyrme interaction calculations, comparison with available data.

doi: 10.1103/PhysRevLett.112.112502
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2014HA02      Phys.Rev. C 89, 014331 (2014)

K.Hagino, H.Sagawa

Correlated two-neutron emission in the decay of the unbound nucleus 26O

RADIOACTIVITY 26O(2n); calculated decay energy spectrum, angular distribution of two correlated and uncorrelated neutrons, decay probability distribution, two-particle density for the resonance state of 26O. Dineutron correlations. Three-body model with a contact neutron-neutron interaction and Green's function. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.014331
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2014HA29      Phys.Rev. C 90, 027303 (2014)

K.Hagino, H.Sagawa

Three-body model calculation of the 2+ state in 26O

NUCLEAR STRUCTURE 26O; calculated energies of ground state and first 2+ state by three-body 24O+n+n model approach, taking into account continuum effects, and dineutron correlation of the valence neutrons. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.027303
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2014HA30      Phys.Rev. C 90, 031302 (2014)

I.Hamamoto, H.Sagawa

Self-consistent Hartree-Fock and RPA Green's function method indicate no pygmy resonance in the monopole response of neutron-rich Ni isotopes

NUCLEAR STRUCTURE 68Ni; calculated monopole strength function (ISGMR) as a function of excitation energy, and the unperturbed particle-hole excitation strength using SLy4 interaction in the Hartree-Fock (HF) and the RPA Green's function methods.

doi: 10.1103/PhysRevC.90.031302
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2014IS02      Phys.Rev. C 89, 024310 (2014)

M.Isaka, K.Fukukawa, M.Kimura, E.Hiyama, H.Sagawa, Y.Yamamoto

Superdeformed Λ hypernuclei with antisymmetrized molecular dynamics

NUCLEAR STRUCTURE 41Ca, 46,48Sc; calculated levels, J, π, deformation parameters, B(E2), Λ-N interaction strength, Λ-separation, rms radii, intrinsic density distributions, normal and superdeformed bands, electric quadrupole moments for hypernuclei. 40Ca, 45,47Sc; calculated levels, J, π, normal and superdeformed bands, intrinsic density distributions. Deformed basis antisymmetrized molecular dynamics (AMD) model with the generator coordinate method (GCM). Comparison with experimental data.

doi: 10.1103/PhysRevC.89.024310
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2014LU06      Phys.Rev. C 89, 044307 (2014)

B.-N.Lu, E.Hiyama, H.Sagawa, S.-G.Zhou

Superdeformed Λ hypernuclei within relativistic mean field models

NUCLEAR STRUCTURE 33S, 37,39,41Ar, 41Ca, 57Ni, 61Zn; calculated energies as function of deformation parameter, β2, βp, βn, βΛ, Ioverlap, binding energy, rms radii, Λ separation energies, density distribution contours in (r, z) plane, Nilsson wave function for ground state and superdeformed states of hypernuclei. 36,38,40,41Ar, 40Ca; calculated energies as function of deformation parameter, β2, βp, βn deformation parameters, rms radii, binding energies, density distribution contours in (r, z) plane. Multidimensionally constrained relativistic mean field (MDC-RMF) models for superdeformed states of nuclei and hypernuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044307
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2014MA11      Eur.Phys.J. A 50, 18 (2014)

J.Margueron, E.Khan, G.Colo, K.Hagino, H.Sagawa

Effect of pairing on the symmetry energy and the incompressibility

NUCLEAR STRUCTURE 120Sn; calculated mass excess, pairing correlations, incompressibility, symmetry energy using HFB modeling with different pairing interactions.

doi: 10.1140/epja/i2014-14018-9
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2014OI02      Phys.Rev. C 90, 034303 (2014)

T.Oishi, K.Hagino, H.Sagawa

Role of diproton correlation in two-proton-emission decay of the 6Be nucleus

RADIOACTIVITY 6Be(2p); calculated decay width and probabilities, contributions from the spin-singlet and the spin-triplet configurations to the total decay width, trajectories of different 2p-emission modes, 2p-density distribution and time evolution of the decay state with and without pairing; deduced dominance of diproton emission process in the early stage; discussed role of pairing correlations in decay width. Time-dependent method using three-body model consisting of an α particle and two valence protons.

NUCLEAR STRUCTURE 6Be, 6He; calculated properties of the initial state of 6Be and the bound ground state of 6He for all configurations, proton and neutron densities using confining potential method.

doi: 10.1103/PhysRevC.90.034303
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2014TA12      Prog.Theor.Exp.Phys. 2014, 053D02 (2014)

Y.Tanimura, H.Sagawa, K.Hagino

Three-body model calculations for N = Z odd-odd nuclei with T = 0 and T = 1 pairing correlations

NUCLEAR STRUCTURE 14N, 18F, 30P, 34Cl, 42Sc, 58Cu; calculated energy levels, J, π, nuclear magnetic moments, B(M1), Gamow-Teller transition probabilities. Comparison with available data.

doi: 10.1093/ptep/ptu056
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2014WE02      Phys.Rev. C 89, 044311 (2014)

P.Wen, L.-G.Cao, J.Margueron, H.Sagawa

Spin-isospin response in finite nuclei from an extended Skyrme interaction

NUCLEAR STRUCTURE 48Ca, 90Zr, 208Pb; calculated centroid energies of low and high energy peaks of Gamow-Teller (GT) response functions, RPA response function and energies of GT and magnetic dipole excitations with and without spin-density dependent terms. Fully self-consistent Hartree-Fock (HF) plus random phase approximation (RPA) with Skyrme interaction with spin and spin-isospin densities. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044311
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2013KH08      Phys.Rev. C 87, 064311 (2013)

E.Khan, N.Paar, D.Vretenar, L.-G.Cao, H.Sagawa, G.Colo

Incompressibility of finite fermionic systems: Stable and exotic atomic nuclei

NUCLEAR STRUCTURE Z=50, A=94-168; Z=82, A=170-262; calculated nuclear incompressibility using microscopic Skyrme-CHFB method, the Skyrme-QRPA, and the relativistic QRPA. 110,114,118,122,126,130,134,138,142,146Sn, 200,204,208,212,216,220,224,228,232,236Pb; calculated isoscalar monopole response, nuclear compressibility using the relativistic QRPA with the DD-ME2 functional and the QRPA with the functional SLy5.

doi: 10.1103/PhysRevC.87.064311
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2013LI05      Phys.Rev. C 87, 014333 (2013)

A.Li, E.Hiyama, X.-R.Zhou, H.Sagawa

Tensor correlation, pairing interaction, and deformation in Ne isotopes and Ne hypernuclei

NUCLEAR STRUCTURE 20,21,22,23,24,25,26,27,28,29,30Ne; calculated β2 as function of neutron number for normal, and double-Λ hypernuclei. 26,30Ne; calculated energy surfaces as function of β2. Tensor and pairing effects on the quadruple deformation. Skyrme-Hartree-Fock model with BCS approximation, and two different hyperon-nucleon interactions for double-Λ hypernuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.014333
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2013RO15      Phys.Scr. T154, 014011 (2013)

X.Roca-Maza, G.Colo, H.Sagawa

New Skyrme energy density functional for a better description of the Gamow-Teller resonance

NUCLEAR STRUCTURE 40,48Ca, 90Zr, 132Sn, 208Pb; analyzed and fitted available data for binding energies, charge radii and the spin-orbit splittings; deduced Gamow-Teller resonance. Skyrme energy density functional (SAMi).

doi: 10.1088/0031-8949/2013/T154/014011
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2013SA04      Phys.Rev. C 87, 034310 (2013)

H.Sagawa, Y.Tanimura, K.Hagino

Competition between T=1 and T=0 pairing in pf -shell nuclei with N=Z

NUCLEAR STRUCTURE 56Ni; calculated single particle energies, magnetic moments. 48Cr, 56Ni, 64Ge; calculated overlap integrals of proton and neutron orbitals. 58Cu; discussed g factor of ground state. Shell-model calculations for N=Z nuclei with isospin T=1 and T=0 pairing interactions, and Skyrme-Hartree-Fock wave functions.

doi: 10.1103/PhysRevC.87.034310
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2013SA61      Phys.Rev. C 88, 064304 (2013)

H.Y.Sang, X.S.Wang, H.F.Lu, J.M.Yao, H.Sagawa

Magnetic moments of Λ hypernuclei within the time-odd triaxial relativistic mean-field approach

NUCLEAR MOMENTS 16,17,18O, 28Si, 28Al, 32S, 40,41Ca, 51V, 57Ni, 89Y, 133Sn, 139La, 208,209Pb; calculated hypernucler magnetic moments using self-consistent time-odd triaxial RMF approach, including strangeness, spacelike component, tensor coupling with the parameter sets PK1-Y1 and PK1-Y0. 17O; calculated single particle spectrum of hypernucleus.

doi: 10.1103/PhysRevC.88.064304
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2013SE21      Prog.Theor.Exp.Phys. 2013, 103D03 (2013)

A.P.Severyukhin, H.Sagawa

Tensor correlation effects on Gamow-Teller resonances in 120Sn and N = 80, 82 isotones

NUCLEAR STRUCTURE 128,130Cd, 120,130,132Sn, 132,134Te; calculated Gamow-Teller strength functions, resonances. QRPA calculations with a separable-type tensor interaction in the finite rank separable approximation.

doi: 10.1093/ptep/ptt085
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2013WA23      Eur.Phys.J. A 49, 101 (2013)

X.S.Wang, H.Y.Sang, H.F.Lu, J.M.Yao, H.Sagawa

Systematic study of hypernuclear magnetic moments under a perturb treatment

NUCLEAR STRUCTURE 13C, 16,17O, 28Al, 28,29Si, 32S, 40,41Ca, 51V, 89Y, 139La, 208,209Pb; calculated Λ hypernuclei magnetic moments using ωΛΛ tensor-coupling interaction; deduced μ contribution of the valence nucleon and of core.

doi: 10.1140/epja/i2013-13101-1
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2012BE02      Phys.Rev. C 85, 014321 (2012)

C.A.Bertulani, H.Liu, H.Sagawa

Global investigation of odd-even mass differences and radii with isospin-dependent pairing interactions

NUCLEAR STRUCTURE Z=8-102, N=8-156; calculated binding energies, S(n), S(p), neutron and proton odd-even staggering (OES), neutron and proton radii, neutron skin. Hartree-Fock HF+BCS model with SLy4 interactions, and isospin-dependent pairing (IS+IV) and Isoscalar (IS) pairing interactions using EV8odd computer code. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.014321
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2012CA33      Prog.Theor.Phys.(Kyoto), Suppl. 196, 322 (2012)

L.-G.Cao, H.Sagawa, G.Colo

Effect of Tensor Force on the Multipole Resonances of Finite Nuclei

NUCLEAR STRUCTURE 208Pb; analyzed available data; deduced the necessity to include the tensor component of the Skyrme force in mean field theory.

doi: 10.1143/PTPS.196.322
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2012CA38      Phys.Rev. C 86, 054313 (2012)

L.-G.Cao, H.Sagawa, G.Colo

Microscopic study of the isoscalar giant monopole resonance in Cd, Sn, and Pb isotopes

NUCLEAR STRUCTURE 106,110,112,114,116Cd, 112,114,116,118,120,122,124Sn, 204,206,208Pb; calculated isoscalar giant monopole resonance (ISGMR) strength distributions, centroids, scaling, constrained and peak energies using the self-consistent Skyrme Hartree-Fock+BCS and quasiparticle random phase approximation (QRPA). Comparison with experimental data.

doi: 10.1103/PhysRevC.86.054313
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2012CH40      Phys.Rev. C 86, 041307 (2012)

R.J.Charity, L.G.Sobotka, K.Hagino, D.Bazin, M.A.Famiano, A.Gade, S.Hudan, S.A.Komarov, Jenny Lee, S.P.Lobastov, S.M.Lukyanov, W.G.Lynch, C.Metelko, M.Mocko, A.M.Rogers, H.Sagawa, A.Sanetullaev, M.B.Tsang, M.S.Wallace, M.J.van Goethem, A.H.Wuosmaa

Double isobaric analog of 11Li in 11B

NUCLEAR REACTIONS 1H(12Be, 11B), E=50 MeV/nucleon; analyzed decay products, excitation energy via 2p+9Li events, mass excess. 11B; deduced level, J, π, width, double isobaric analog state of the two-neutron-halo system 11Lig.s.. Discussed T=5/2 isospin sextet using the isobaric multiplet mass equation.

doi: 10.1103/PhysRevC.86.041307
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2012HA03      Phys.Rev. C 85, 014303 (2012)

K.Hagino, H.Sagawa

Pairing correlations and odd-even staggering in reaction cross sections of weakly bound nuclei

NUCLEAR STRUCTURE 74,75,76Cr; calculated mean square radii, the pairing gap. Woods-Saxon potential, Hartree-Fock-Bogoliubov method.

NUCLEAR REACTIONS 12C(22O, X), (23O, X), (24O, X), (30Ne, X), (31Ne, X), (32Ne, X), (74Cr, X), (75Cr, X), (76Cr, X), E=240 MeV/nucleon; calculated cross sections, odd-even staggering (OES) parameter. Glauber theory with pairing correlation by the Hartree-Fock-Bogoliubov (HFB) method. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.014303
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2012HA11      Phys.Rev. C 85, 037604 (2012)

K.Hagino, H.Sagawa

Odd-even staggering of reaction cross sections for 22, 23, 24O isotopes

NUCLEAR REACTIONS 12C(22O, X), (23O, X), (24O, X), E=240, 1000 MeV/nucleon; calculated odd-even staggering (OES) parameter as a function of incident energy. Optical limit approximation of the Glauber theory. Density distribution from Hartree-Fock-Bogoliubov method by using a Woods-Saxon mean-field potential. Comparison with theoretical systematics and experimental data. Absence of halo structure in 23O.

doi: 10.1103/PhysRevC.85.037604
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2012LO02      Phys.Rev. C 85, 025806 (2012)

W.H.Long, B.Y.Sun, K.Hagino, H.Sagawa

Hyperon effects in covariant density functional theory and recent astrophysical observations

doi: 10.1103/PhysRevC.85.025806
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2012MA43      Prog.Theor.Phys.(Kyoto), Suppl. 196, 172 (2012)

J.Margueron, M.Grasso, S.Goriely, G.Colo, H.Sagawa

Extended Skyrme Interaction in the Spin Channel

NUCLEAR STRUCTURE 41,42,49,50Ca; calculated total energy, mean field, spin-orbit, Coulomb and kinetic contributions to the total energy. Skyrme interactions.

doi: 10.1143/PTPS.196.172
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2012MI16      Phys.Rev.Lett. 108, 262503 (2012)

K.Miki, H.Sakai, T.Uesaka, H.Baba, C.L.Bai, G.P.A.Berg, N.Fukuda, D.Kameda, T.Kawabata, S.Kawase, T.Kubo, S.Michimasa, H.Miya, S.Noji, T.Ohnishi, S.Ota, A.Saito, Y.Sasamoto, H.Sagawa, M.Sasano, S.Shimoura, H.Takeda, H.Tokieda, K.Yako, Y.Yanagisawa, R.G.T.Zegers

Identification of the β+ Isovector Spin Monopole Resonance via the 208Pb and 90Zr(t, 3He) Reactions at 300 MeV/u

NUCLEAR REACTIONS 208Pb, 90Zr(t, 3He), E=300 MeV/nucleon. 208Tl, 90Y; measured reaction products; deduced σ(E, θ), isovector spin monopole resonance. Distorted-wave Born approximation calculation, comparison with available data.

doi: 10.1103/PhysRevLett.108.262503
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2382.

2012MO01      Phys.Rev.Lett. 108, 052501 (2012)

P.Moller, W.D.Myers, H.Sagawa, S.Yoshida

New Finite-Range Droplet Mass Model and Equation-of-State Parameters

NUCLEAR STRUCTURE Z=1-120, A=1-160; calculated masses, symmetry parameters, using finite-range droplet model (FRDM); deduced more accurate FRDM-2011 parameters and constants. Comparison with atomic mass evaluation 2003.

doi: 10.1103/PhysRevLett.108.052501
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2012MO02      At.Data Nucl.Data Tables 98, 149 (2012)

P.Moller, A.J.Sierk, R.Bengtsson, H.Sagawa, T.Ichikawa

Nuclear shape isomers

NUCLEAR STRUCTURE A=31-120; calculated potential-energy surfaces, deformations and all energy minima, shape isomers near 208Pb.

doi: 10.1016/j.adt.2010.09.002
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2012RO26      Phys.Rev. C 86, 031306 (2012)

X.Roca-Maza, G.Colo, H.Sagawa

New Skyrme interaction with improved spin-isospin properties

NUCLEAR STRUCTURE 16O, 40,48Ca, 56,68Ni, 90Zr, 100,132Sn, 208Pb; calculated binding energies, charge radii, proton spin-orbit splittings using the Skyrme-Aizu-Milano (SAMi) functional. 48Ca, 90Zr, 208Pb; calculated Gamow-Teller (GT) strength distributions and spin dipole resonance (SDR) strength functions using several Skyrme interactions. New Skyrme energy density functional proposed. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.031306
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2012SA45      Prog.Theor.Phys.(Kyoto), Suppl. 196, 244 (2012)

H.Sagawa, K.Hagino

Pairing Correlations and Anti-Halo Effect in Weakly Bound Nuclei

NUCLEAR STRUCTURE 74,75,76Cr; calculated rms radii. HF and HFB calculations.

NUCLEAR REACTIONS 12C(22O, n), (23O, n), (24O, n), (74Cr, n), (75Cr, n), (76Cr, n), E=240 MeV/nucleon; 12C(30Ne, n), (31Ne, n), (32Ne, n), E=240 MeV/nucleon; calculated staggering parameter γ3 of reaction σ. Comparison with available data.

doi: 10.1143/PTPS.196.244
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2012TA19      Phys.Rev. C 86, 044331 (2012)

Y.Tanimura, K.Hagino, H.Sagawa

Impurity effect of the Λ particle on the structure of 18F and Λ19F

NUCLEAR STRUCTURE 18,19F; calculated levels, J, π, core-pn and p-n rms distances, B(E2), two-particle density distributions, configurations for 19F hypernucleus and 18F using a three-body shell model calculations with density-dependent contact interaction.

doi: 10.1103/PhysRevC.86.044331
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2012UR06      Phys.Rev. C 86, 044613 (2012)

Y.Urata, K.Hagino, H.Sagawa

Reaction cross sections of the deformed halo nucleus 31Ne

NUCLEAR REACTIONS C(30Ne, 29Ne), (31Ne, 30Ne), E=240 MeV/nucleon; calculated reactions cross section, and one neutron removal cross section as function of deformation. Particle-rotor model (PRM). Glauber theory. Comparison with experimental data.

NUCLEAR STRUCTURE 30,31Ne; calculated rms radii as function of S(n), matter density distribution. Particle-rotor model and Nilsson model.

doi: 10.1103/PhysRevC.86.044613
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2012YA12      Phys.Rev. C 86, 034333 (2012)

M.Yamagami, J.Margueron, H.Sagawa, K.Hagino

Isoscalar and isovector density dependence of the pairing functional determined from global fitting

NUCLEAR STRUCTURE N>8, Z>8; calculated pair-density functional (pair-DF) with isoscalar and isovector density dependences using experimental neutron and proton pairing gaps for even-even nuclides of N, Z>8.

doi: 10.1103/PhysRevC.86.034333
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2011BA18      Phys.Rev. C 83, 054316 (2011)

C.L.Bai, H.Q.Zhang, H.Sagawa, X.Z.Zhang, G.Colo, F.R.Xu

Spin-isospin excitations as quantitative constraints for the tensor force

NUCLEAR STRUCTURE 90Zr, 208Pb; calculated Gamow-Teller (GT) and charge-exchange spin-dipole (SD) excitation energies, centroid energies. HF+RPA model with Skyrme interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.054316
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2011BA38      Phys.Rev. C 84, 044329 (2011)

C.L.Bai, H.Sagawa, G.Colo, H.Q.Zhang, X.Z.Zhang

Spin-dipole excitations in 16O and tensor correlations

NUCLEAR STRUCTURE 16F, 208Bi; calculated charge-exchange spin-dipole (SD) strength distributions and energies using different interactions. Hartree-Fock (HF) plus self-consistent random-phase approximation (RPA) using Skyrme-type interactions. 16O; investigated effect of tensor force on the charge-exchange SD transition. Role of triplet-even and triplet-odd tensor interactions.

doi: 10.1103/PhysRevC.84.044329
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2011CA07      Phys.Rev. C 83, 034324 (2011)

L.-G.Cao, H.Sagawa, G.Colo

Effects of tensor correlations on low-lying collective states in finite nuclei

NUCLEAR STRUCTURE 208Pb; calculated levels, J, π, B(M1), B(E2), B(E3), p-h matrix elements. 40Ca; calculated levels, J, π, B(E3), p-h matrix elements. Fully self-consistent random phase approximation with Skyrme interactions including tensor correlations.

doi: 10.1103/PhysRevC.83.034324
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2011HA01      J.Phys.(London) G38, 015105 (2011)

K.Hagino, A.Vitturi, F.Perez-Bernal, H.Sagawa

Two-neutron halo nuclei in one dimension: dineutron correlation and breakup reaction

doi: 10.1088/0954-3899/38/1/015105
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2011HA33      Phys.Rev. C 84, 011303 (2011)

K.Hagino, H.Sagawa

Evidence for a pairing anti-halo effect in the odd-even staggering in reaction cross sections of weakly bound nuclei

NUCLEAR REACTIONS 12C(30Ne, X), (31Ne, X), (32Ne, X), E=240 MeV/nucleon; 12C(14C, X), (15C, X), (16C, X), E=83 MeV/nucleon; calculated reaction cross sections. Glauber theory with HF, HFB, and three-body model densities. Pairing anti-halo effect in odd-even staggering of reaction cross sections. Comparison with experimental data.

NUCLEAR STRUCTURE 22,23,24O, 30,31,32Ne; calculated root-mean-square radii, and average pairing gap as functions of the single-particle energy in a Woods-Saxon mean-field potential. Hartree-Fock and Hartree-Fock-Bogoliubov calculations.

doi: 10.1103/PhysRevC.84.011303
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2011OI01      Phys.Rev. C 84, 057301 (2011)

T.Oishi, K.Hagino, H.Sagawa

Effect of proton-proton Coulomb repulsion on soft dipole excitations of light proton-rich nuclei

NUCLEAR STRUCTURE 17Ne; calculated E1 strength distributions. Three-body (15O+p+p) model calculations for soft dipole excitations of the proton-rich Borromean nucleus.

doi: 10.1103/PhysRevC.84.057301
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2011UR01      Phys.Rev. C 83, 041303 (2011)

Y.Urata, K.Hagino, H.Sagawa

Ground state properties and Coulomb dissociation of the deformed halo nucleus 31Ne

NUCLEAR STRUCTURE 31Ne; analyzed Coulomb dissociation cross sections as a function of quadrupole deformation using Nilsson model and particle rotor model; deduced ground state spin, parity, deformation, and halo structure.

doi: 10.1103/PhysRevC.83.041303
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2010BA22      Phys.Rev.Lett. 105, 072501 (2010)

C.L.Bai, H.Q.Zhang, H.Sagawa, X.Z.Zhang, G.Colo, F.R.Xu

Effect of the Tensor Force on the Charge Exchange Spin-Dipole Excitations of 208Pb

NUCLEAR STRUCTURE 208Pb; calculated charge exchange spin-dipole excitations; deduced tensor correlations, tensor strength parameters, strength distributions. Self-consistent Skyrme hartree-Fock formalism.

doi: 10.1103/PhysRevLett.105.072501
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2010BA34      Chin.Phys.Lett. 27, 102101 (2010)

C.-L.Bai, H.-Q.Zhang, X.-Z.Zhang, F.-R.Xu, H.Sagawa, G.Colo

Effect of the Tensor Force on Charge-Exchange Spin-Dependent Multipole Excitations

NUCLEAR STRUCTURE 90Zr; calculated charge-exchange spin-dipole and spin-quadrupole strength functions; deduced RPA tensor correlation shift.

doi: 10.1088/0256-307X/27/10/102101
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