NSR Query Results
Output year order : Descending NSR database version of May 23, 2024. Search: Author = T.Oishi Found 24 matches. 2024HI03 Phys.Rev. C 109, 034302 (2024) N.Hinohara, T.Oishi, K.Yoshida Triplet-odd pairing in finite nuclear systems: Even-even singly closed nuclei
doi: 10.1103/PhysRevC.109.034302
2023KR01 Eur.Phys.J. A 59, 50 (2023) Magnetic quadrupole transitions in the relativistic energy density functional theory NUCLEAR STRUCTURE ^{16}O, ^{48}Ca, ^{208}Pb, ^{18}O, ^{42}Ca, ^{56}Fe, ^{90}Zr, ^{36,38,40,42,44,46,48,50,52,54,56,58,60,62,64}Ca; calculated the nuclear ground state with relativistic Hartree-Bogoliubov model, and the M2 excitations using the relativistic quasiparticle random phase approximation with the residual interaction extended with the isovector-pseudovector term.
doi: 10.1140/epja/s10050-023-00958-0
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 ^{36,38,40,42,44,46,48,50,52,54,56,58,60,62}Ca, ^{100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144}Sn, ^{182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222}Pb; calculated rms charge radii. ^{132}Sn, ^{208}Pb; 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
2023OI01 Phys.Rev. C 107, 034301 (2023) Time-dependent Dirac equation applied to one-proton radioactive emission RADIOACTIVITY ^{37,39}Sc(p); calculated Q value, decay width, T_{1/2}, single-particle potentials and energies for p+^{36}Ca and p+^{38}Ca systems, survival probability, one-proton density. Time-dependent (TD) Dirac-spinor calculation based on relativistic Dirac formalism. Demonstrated sensitivity of 1p-emission energy and decaying width to the mass number. Comparison to shell model calculations and experimental data.
doi: 10.1103/PhysRevC.107.034301
2022OI01 Phys.Rev. C 105, 064309 (2022) Symmetry breaking of Gamow-Teller and magnetic-dipole transitions and its restoration in calcium isotopes NUCLEAR STRUCTURE ^{42,44,46,48}Ca, ^{42}Ti, ^{208}Pb; calculated isovector M1 and GT strength distributions. Relativistic energy-density functional (REDF) with point-coupling interactions, using the relativistic quasiparticle randomphase approximation (RQRPA).
doi: 10.1103/PhysRevC.105.064309
2021KR07 Phys.Rev. C 103, 054306 (2021) Evolution of magnetic dipole strength in ^{100-140}Sn isotope chain and the quenching of nucleon g factors NUCLEAR STRUCTURE ^{100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140}Sn; calculated occupation probabilities of π1g_{9/2}, ν1g_{9/2}, ν2d_{5/2}, and ν1h_{11/2} orbits in RHB-GS solutions, M1 transition strength function, partial M1 transition strengths for protons and neutrons, M1 excitation energies, total M1 transition strengths, energy-weighted summation of M1 strengths. RHB+R(Q)RPA formulated in the framework of relativistic nuclear energy density functional (RNEDF) (DD-PC1) with Gogny-D1S force for the pairing correlations. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.054306
2021OI01 Eur.Phys.J. A 57, 180 (2021) Discerning nuclear pairing properties from magnetic dipole excitation NUCLEAR STRUCTURE ^{36,38,40,42,44,46,48,50,52,54}Ca; calculated binding energies, magnetic dipole strengths, pairing correation of Cooper pair within the framework of relativistic nuclear energy-density functional (RNEDF).
doi: 10.1140/epja/s10050-021-00488-7
2020FO02 Eur.Phys.J. A 56, 49 (2020) L.Fortunato, C.E.Alonso, J.M.Arias, J.Casal, K.Hagino, J.A.Lay, E.G.Lanza, S.M.Lenzi, J.Lubian, T.Oishi, F.Perez-Bernal An overview of the scientific contribution of Andrea Vitturi to nuclear physics
doi: 10.1140/epja/s10050-020-00034-x
2020KR13 Phys.Rev. C 102, 044315 (2020) G.Kruzic, T.Oishi, D.Vale, N.Paar Magnetic dipole excitations based on the relativistic nuclear energy density functional NUCLEAR STRUCTURE ^{18}O, ^{42,48}Ca, ^{50}Ti, ^{208}Pb; calculated M1 strength distributions, B(M1), neutron and proton contributions to the M1 transition strengths; compiled experimental M1 excitation energies and B(M1) values. Relativistic Hartree-Bogoliubov (RHB) model, and relativistic nuclear energy density functional formalism using relativistic quasiparticle random phase approximation (RQRPA) with density-dependent point coupling interaction DD-PC1.
doi: 10.1103/PhysRevC.102.044315
2020OI01 J.Phys.(London) G47, 115106 (2020) Role of residual interaction in the relativistic description of M1 excitation NUCLEAR STRUCTURE ^{36,38,40,42,44,46,48,50,52,54,56,58,60,62,64}Ca; analyzed available data; calculated summations of the M1-excitation strength of Ca isotopes, M1-excitation energies.
doi: 10.1088/1361-6471/abaeb1
2019OI01 Phys.Rev. C 100, 024308 (2019) Magnetic dipole excitation and its sum rule in nuclei with two valence nucleons NUCLEAR STRUCTURE ^{18}O, ^{18}Ne, ^{42}Ca; calculated energies of ground states and 1+ levels, discrete M1 transition strengths, M1 sum rule. ^{17}O; calculated single-neutron energies. Three-body model for systems with two-valence nucleons, with no pairing, density-dependent contact (DDC) pairing and Minnesota pairing. Comparison with available experimental data.
doi: 10.1103/PhysRevC.100.024308
2018OI01 Phys.Rev. C 97, 024314 (2018) One-proton emission from the ^{6}_{Λ}Li hypernucleus RADIOACTIVITY ^{6}Li(p); calculated resonance energy and width with the α-nucleon potential, and evaluated from the scattering phase shift data, survival probability and resonance width of the one-proton emission from the ground state of ^{6}Li hypernucleus, time-dependent probability-density distribution of the decaying state, 1p-emission width of ^{6}Li hypernucleus, one-proton resonance width as function of the emitted Q(1p) value, dependence of proton-Λ scattering length or interaction strength on the spontaneous-1p emission. Time-dependent three-body (α-proton-Λ^{0}) model, estimated half-lives for 1p decay of hypernucleus.
doi: 10.1103/PhysRevC.97.024314
2018OI02 Acta Phys.Pol. B49, 293 (2018) Time-dependent Method for Many-body Problems and Its Application to Nuclear Resonant Systems
doi: 10.5506/aphyspolb.49.293
2018OI03 J.Phys.(London) G45, 105101 (2018) T.Oishi, L.Fortunato, A.Vitturi Two-fermion emission from spin-singlet and triplet resonances in one dimension
doi: 10.1088/1361-6471/aad8f8
2017OI01 Phys.Rev. C 96, 044327 (2017) T.Oishi, M.Kortelainen, A.Pastore Dependence of two-proton radioactivity on nuclear pairing models RADIOACTIVITY ^{6}Be(2p); ^{6}Be; calculated density distribution of the initial 2p state obtained with the surface SDDC pairing interaction, 2p-decay width, time-dependent 2p-density distribution, time-dependent 2p-density distribution of a decaying state, Time-invariant discrete energy distribution, radial strength for three SDDC pairing potentials. Schematic density-dependent contact (SDDC) pairing three-body (α+p+p) model.
doi: 10.1103/PhysRevC.96.044327
2016OI01 Phys.Rev. C 93, 034329 (2016) T.Oishi, M.Kortelainen, N.Hinohara Finite amplitude method applied to the giant dipole resonance in heavy rare-earth nuclei NUCLEAR STRUCTURE ^{152,154,156,158,160,162,164}Gd, ^{156,160,162,164,166,168}Dy, ^{162,164,166,168,170,172,174}Er, ^{168,170,172,174,176,178}Yb, ^{174,176,178,180,182,184}Hf, ^{180,182,184,186,188,190}W; calculated axial deformation β, pairing gaps for neutrons and protons, energy-weighted sum rule, and its enhancement factor from the Thomas-Reiche-Kuhn (TRK) sum rule for ground states. Hartree-Fock-Bogoliubov (HFB) calculation with Skyrme EDF framework (SkM* parameterization). NUCLEAR REACTIONS ^{144,145}Sm, ^{152,154,156,158,160,162,164}Gd, ^{156,160,162,164,166,168}Dy, ^{162,164,166,168,170,172,174}Er, ^{168,170,172,174,176,178}Yb, ^{174,176,178,180,182,184}Hf, ^{180,182,184,186,188,190}W(γ, X), E not given; calculated E1 photoabsorption σ as function of excitation energy, mean giant dipole resonance (GDR) frequencies and widths within a parallelized finite amplitude method, and quasiparticle random phase approximation (FAM-QRPA) scheme, with the Skyrme energy density functional in the nuclear density functional theory (DFT) applied for ground states and FAM-QRPA for excitations. Comparison with experimental data. Discussed role of role of the Thomas-Reiche-Kuhn (TRK) sum rule enhancement factor, connected to the isovector effective mass.
doi: 10.1103/PhysRevC.93.034329
2014OI02 Phys.Rev. C 90, 034303 (2014) Role of diproton correlation in two-proton-emission decay of the ^{6}Be nucleus RADIOACTIVITY ^{6}Be(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 ^{6}Be, ^{6}He; calculated properties of the initial state of ^{6}Be and the bound ground state of ^{6}He for all configurations, proton and neutron densities using confining potential method.
doi: 10.1103/PhysRevC.90.034303
2011KA33 J.Korean Phys.Soc. 59, 1676s (2011) S.Kamada, T.Itoga, Y.Unno, W.Takahashi, T.Oishi, M.Baba Measurement of Energy-angular Neutron Distribution for ^{7}Li, ^{9}Be(p, xn) Reaction at EP = 70 MeV and 11 MeV NUCLEAR REACTIONS ^{7}Li, ^{9}Be(p, xn), E=11, 70 MeV; measured En, In(θ) using NE213 or ToF; deduced neutron flux(En, θ).
doi: 10.3938/jkps.59.1676
2011OI01 Phys.Rev. C 84, 057301 (2011) Effect of proton-proton Coulomb repulsion on soft dipole excitations of light proton-rich nuclei NUCLEAR STRUCTURE ^{17}Ne; calculated E1 strength distributions. Three-body (^{15}O+p+p) model calculations for soft dipole excitations of the proton-rich Borromean nucleus.
doi: 10.1103/PhysRevC.84.057301
2010OI01 Phys.Rev. C 82, 024315 (2010); Erratum Phys.Rev. C 82, 069901 (2010) Diproton correlation in the proton-rich Borromean nucleus ^{17}Ne NUCLEAR STRUCTURE ^{16}C, ^{17}Ne; calculated ground-state wave function, density distributions using three-body-model calculations by assuming a ^{15}O+p+p structure for ^{17}Ne, and density-dependent contact pairing interaction between the valence protons. Strong diproton correlation in the ground state of the ^{17}Ne.
doi: 10.1103/PhysRevC.82.024315
2009SA54 Nucl.Instrum.Methods Phys.Res. A 610, 660 (2009) T.Sanami, M.Hagiwara, T.Oishi, M.Hosokawa, S.Kamada, Su.Tanaka, Y.Iwamoto, H.Nakashima, M.Baba .A Bragg curve counter with an internal production target for the measurement of the double-differential cross-section of fragment production induced by neutrons at energies of tens of MeV NUCLEAR REACTIONS ^{12}C(n, x), E=65 MeV; measured products, ^{6,7}Li, B, ^{7,9}Be; deduced σ(θ, E). Data were imported from EXFOR entry 23111.
doi: 10.1016/j.nima.2009.09.011
2008HA19 Nucl.Instrum.Methods Phys.Res. A592, 73 (2008) M.Hagiwara, T.Sanami, T.Oishi, M.Baba, M.Takada Extension of energy acceptance of Bragg curve counter at the high-energy end NUCLEAR REACTIONS C(p, X)^{6}Li/^{7}Li/^{7}Be, E=70 MeV; measured E, double differential σ; Bragg curve counter; Energy loss.
doi: 10.1016/j.nima.2008.03.108
2008SA46 Nucl.Instrum.Methods Phys.Res. A 589, 193 (2008) T.Sanami, M.Hagiwara, T.Oishi, M.Baba, M.Takada A Bragg curve counter with an active cathode to improve the energy threshold in fragment measurements NUCLEAR REACTIONS C(p, x), E=70 MeV; measured products, ^{-1}B, ^{-1}C; deduced σ(θ, E). Data were imported from EXFOR entry E2106.
doi: 10.1016/j.nima.2008.02.015
1996YO12 Nucl.Instrum.Methods Phys.Res. A383, 441 (1996) M.Yoshida, T.Oishi, T.Honda, T.Torii A Calibration Technique for Gas-Flow Ionization Chambers with Short Half-Lived Rare Gases RADIOACTIVITY ^{41}Ar, ^{133}Xe, ^{135}Xe(β^{-}) [from ^{40}Ar, ^{132}Xe, ^{134}Xe(n, γ);E=reactor]; measured Eγ, Iγ; deduced prepared gas purity.
doi: 10.1016/S0168-9002(96)00834-0
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