NSR Query Results
Output year order : Descending NSR database version of May 24, 2024. Search: Author = Y.Shikata Found 14 matches. 2021CH24 Phys.Rev. C 103, 064311 (2021) Y.Chiba, Y.Kanada-En'yo, Y.Shikata Cluster correlation and nuclear vorticity in low-lying 1^{-} states of ^{24}Mg NUCLEAR STRUCTURE ^{24}Mg; calculated low-lying dipole K=0 and 1, 1- states, isoscalar toroidal dipole (TD) and compressional dipole (CD) strength, B(TD) and B(CD) strength functions of dipole transitions, energy curves and intrinsic matter density distributions for ^{20}Ne+α, ^{16}O+^{8}Be, and ^{12}C+^{12}C quasicluster configurations, intrinsic transition current density for 0+ to K=1, 1- and 0+ to K=0, 1- transitions; deduced enhanced cluster structure but weaker vorticity for compressional dipole (CD) state. Antisymmetrized molecular dynamics framework combined with the generator coordinate (AMD+GCM) method, with the βγ constraint for the quadrupole deformation.
doi: 10.1103/PhysRevC.103.064311
2021SH14 Phys.Rev. C 103, 034312 (2021) Low-energy dipole excitation mode in ^{18}O with antisymmetrized molecular dynamics NUCLEAR STRUCTURE ^{18}O; calculated K-projected energy curves as a function of β, intrinsic density distributions of the basis wave functions, levels, J, K, π, B(E2) for the ground band and ^{14}C+α cluster band, GCM amplitudes for the 1- states, B(E1), B(toroidal dipole, TD), B(compressive dipole, CD), and B(isoscalar dipole, ISD) strengths, TD and CD strength densities. Low-energy dipole (LED) excitations investigated by a combination of the variation after K projection (K-VAP) in the framework of antisymmetrized molecular dynamics (AMD) with β constraint in the generator coordinate method. Comparison with available experimental data.
doi: 10.1103/PhysRevC.103.034312
2021SH31 Phys.Rev. C 104, 034314 (2021) Low-energy dipole excitations in ^{20}O with antisymmetrized molecular dynamics NUCLEAR STRUCTURE ^{20}O; calculated levels, J, π, low-energy dipole (LED) excitations, B(E1), excited bands of Kπ=0+, 0- and 1- with cluster structures, K-projected energy curves as function of β_{2}, matter density contours, GCM amplitudes of positive-, and negative-parity states, density distribution contours of protons, transition current densities, toroidal dipole (TD) strength densities. ^{16,18,20}O; energies of 0+ and 1- levels, intrinsic matter density contours of excited states, isoscalar (IS) dipole strength, proton, and neutron components of toroidal dipole (TD) and compressive dipole (CD) strengths, B(E1) for first two 1- states. Variation after K projection (K-VAP) and deformation β-constraint antisymmetrized molecular dynamics (AMD) combined with the generator coordinate method (GCM) for low-energy dipole excitations. Comparison with available experimental data.
doi: 10.1103/PhysRevC.104.034314
2020KA36 Phys.Rev. C 102, 014607 (2020) Y.Kanada-Enyo, Y.Shikata, Y.Chiba, K.Ogata Neutron dominance in excited states of ^{26}Mg and ^{10}Be probed by proton and α inelastic scattering NUCLEAR STRUCTURE ^{10}Be, ^{26}Mg; calculated levels, J, π, rms proton-, neutron-, and matter-radii, isoscalar monopole strengths for E0 transitions, B(E2), B(E1), B(E3), B(E4), charge form factors, and proton and neutron diagonal and transition densities, proton and neutron densities of various states in ^{10}Be using antisymmetrized molecular dynamics (AMD) model. Comparison with experimental data. NUCLEAR REACTIONS ^{26}Mg(p, p'), (p, p), E=24, 40, 60, 100 MeV; ^{26}Mg(α, α'), (α, α), E=104, 120, 240, 400 MeV; ^{10}Be, ^{10}C(p, p'), (p, p), E=25, 40, 45, 60, 100 MeV; ^{26}Mg(α, α'), (α, α), E=25, 68, 100 MeV/nucleon; calculated differential σ(θ, E), radial dependences and volume integrals of the real and imaginary parts of the present microscopic potentials. Microscopic coupled-channel (MCC) method with Melbourne g-matrix folding approach and using the matter and transition densities of the target nuclei from AMD calculations. Comparison with experimental data. Discussed cluster bands.
doi: 10.1103/PhysRevC.102.014607
2020SH18 Prog.Theor.Exp.Phys. 2020, 073D01 (2020) Variation after K-projection in antisymmetrized molecular dynamics for low-energy dipole excitations in ^{10}Be and ^{16}O NUCLEAR STRUCTURE ^{10}Be, ^{16}O; calculated energy surfaces and levels, J, π, low-energy dipole excitations energies and transition strengths using the framework of antisymmetrized molecular dynamics with the β-constraint.
doi: 10.1093/ptep/ptaa092
2019KA28 Phys.Rev. C 100, 014301 (2019) Isoscalar dipole excitations in ^{16}O NUCLEAR STRUCTURE ^{16}O; calculated binding energies, excitation energies, density distributions, rms matter radii, isoscalar monopole (IS0) and dipole (IS1) transition matrix elements, transition probabilities, IS0 and IS1 elastic and inelastic form factors, transition densities and currents of 0^{+} and 1^{-} states, energy weighted strength functions of compressive dipole (CD) and toroidal dipole (TD) transitions; deduced that significant strengths of the IS monopole and dipole transitions lie in the low-energy region below the giant resonances, from a variety of low-energy dipole modes such as the vortical dipole mode in the first 1 state of the vibrating tetrahedral 4α and the ^{12}C+α cluster structure in the second 1 state. Shifted basis antisymmetrized molecular dynamics, combined with generator coordinate method.
doi: 10.1103/PhysRevC.100.014301
2019SH25 Prog.Theor.Exp.Phys. 2019, 063D01 (2019) Y.Shikata, Y.Kanada-En'yo, H.Morita Low-energy dipole excitation modes in ^{10}Be NUCLEAR STRUCTURE ^{10}Be; calculated dipole transition strengths, α- and 2n-cluster distributions, transition current densities.
doi: 10.1093/ptep/ptz049
2018KA09 Phys.Rev. C 97, 014303 (2018) Y.Kanada-Enyo, Y.Shikata, H.Morita Cluster and toroidal aspects of isoscalar dipole excitations in ^{12}C NUCLEAR STRUCTURE ^{12}C; calculated isoscalar dipole strength functions and energy-weighted strengths of toroidal dipole (TD), compressive dipole (CD), and vortical dipole (VD) transitions, EWSR ratio of the energy-weighted isoscalar dipole (IS1) strengths, occupation probability of harmonic oscillator quanta in shell-model basis expansion of 0+ and 1- states, density distributions of the dominant configurations for 0+ and 1- states, transition current density for 0+ to 1- transition, 3α cluster states. Cluster and toroidal aspects of isoscalar dipole (ISD) excitations, based on shifted-basis antisymmetrized molecular dynamics (sAMD)+generator coordinate method (GCM), and the sAMD with various configurations.
doi: 10.1103/PhysRevC.97.014303
2017KA06 Phys.Rev.Lett. 118, 052701 (2017) T.Kawabata, Y.Fujikawa, T.Furuno, T.Goto, T.Hashimoto, M.Ichikawa, M.Itoh, N.Iwasa, Y.Kanada-Enyo, A.Koshikawa, S.Kubono, E.Miyawaki, M.Mizuno, K.Mizutani, T.Morimoto, M.Murata, T.Nanamura, S.Nishimura, S.Okamoto, Y.Sakaguchi, I.Sakata, A.Sakaue, R.Sawada, Y.Shikata, Y.Takahashi, D.Takechi, T.Takeda, C.Takimoto, M.Tsumura, K.Watanabe, S.Yoshida Time-Reversal Measurement of the p -Wave Cross Sections of the ^{7}Be(n, α)^{4}Fe Reaction for the Cosmological Li Problem NUCLEAR REACTIONS ^{4}He(α, n), E=39.15, 38.76 MeV; measured reaction products, En, In, Eγ, Iγ; deduced σ(θ), σ. Comparison with available data.
doi: 10.1103/PhysRevLett.118.052701
2017KA28 Phys.Rev. C 95, 064319 (2017) Toroidal, compressive, and E1 properties of low-energy dipole modes in ^{10}Be NUCLEAR STRUCTURE ^{10}Be; calculated energy-weighted dipole (E1) strengths of giant resonances, intrinsic proton and neutron density distributions and transition current densities. Shifted-basis antisymmetrized molecular dynamics (sAMD), combined with the α-cluster generator coordinate method (αGCM) taking into account 1p-1h excitations and large amplitude cluster modes to describe low-energy dipole strengths for cluster modes and high-energy ones for GDRs.
doi: 10.1103/PhysRevC.95.064319
1981SH11 Z.Phys. A300, 217 (1981) A Shell-Model Study on M1 and E2 Properties of Zn, Ga, and Ge NUCLEAR STRUCTURE ^{67,69}Ga, ^{65,67}Zn, ^{69}Ge; calculated B(E2), B(M1), δ, S; ^{64,66,68}Zn, ^{70}Ge; calculated B(E2). Shell model, effective charges.
doi: 10.1007/BF01412297
1979SA04 Z.Phys. A289, 163 (1979) M.Sakakura, Y.Shikata, A.Arima, T.Sebe Calculations of the Energy Spectra of Zn, Ga, and Ge Isotopes by the Shell Model NUCLEAR STRUCTURE ^{65,66,67,68}Zn, ^{67,68,69}Ga, ^{68,69,70}Ge; calculated energy spectra. Effective shell-model Hamiltonian with neutrons in p, F shells.
doi: 10.1007/BF01435934
1972SH18 Phys.Lett. 40B, 611 (1972) The Calculation of the States in ^{53}Fe NUCLEAR STRUCTURE ^{53}Fe; calculated levels, S.
doi: 10.1016/0370-2693(72)90608-9
1972SH29 Progr.Theor.Phys. 48, 345 (1972) The Method of Variation after Projection Applied to ^{44}Ti NUCLEAR STRUCTURE ^{44}Ti; calculated levels, quadrupole moment, B(E2). Variation after projection method.
doi: 10.1143/PTP.48.345
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