NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = J.Xiang Found 20 matches. 2022MD01 Phys.Rev. C 106, 044325 (2022) L.Mdletshe, X.Q.Yang, E.A.Lawrie, M.A.Sithole, S.N.T.Majola, S.S.Ntshangase, J.F.Sharpey-Schafer, J.J.Lawrie, S.H.Mthembu, T.D.Bucher, L.Msebi, R.A.Bark, A.A.Avaa, M.V.Chisapi, P.Jones, S.Jongile, Z.P.Li, L.Makhathini, K.L.Malatji, A.A.Netshiya, Z.Shi, B.Y.Song, L.Wang, J.Xiang, S.Q.Zhang Collective rotational bands at low excitation energy in ^{186}Os: Vibrational and rotational degrees of freedom NUCLEAR REACTIONS ^{186}W(α, 4n), E=48 MeV; measured Eγ, Iγ, γγ-coin. ^{186}Os; deduced levels, J, π, linear polarization asymmetries, angular distribution ratios, high-spin states, bands structure, staggering parameter; calculated levels, J, π, bands structure, potential energy surfaces, staggering parameter. Five-dimensional collective Hamiltonian based on the covariant density functional theory (5DCH-CDFT) and triaxial rotor model (TRM) calculations. Systematics of the bands alignments for ^{182,184,186,188,190,192}Os isotopes. AFRODITE γ-ray spectrometer consisting of 11 clover HPGe detectors at iThemba LABS Separated-Sector Cyclotron.
doi: 10.1103/PhysRevC.106.044325
2021NO06 Phys.Rev. C 103, 054322 (2021) K.Nomura, D.Vretenar, Z.P.Li, J.Xiang Coupling of pairing and triaxial shape vibrations in collective states of γ-soft nuclei NUCLEAR STRUCTURE ^{128,130}Xe; calculated levels, J, π, B(E2), E(2+ of γ band)/E(2+ of ground band), B(E2)(3+ to 2+ of γ band)/B(E2)(for 2+ of ground band), potential-energy surfaces (PES) for axial quadrupole and triaxial (β, γ), axial quadrupole and pairing (β, α), and triaxial quadrupole and pairing (γ, α) deformations. Self-consistent mean-field calculations of collective deformation-energy surfaces, and the framework of the interacting boson approximation with explicit coupling to pairing vibrations. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.054322
2021NO08 Phys.Rev. C 104, 024323 (2021) K.Nomura, D.Vretenar, Z.P.Li, J.Xiang Interplay between pairing and triaxial shape degrees of freedom in Os and Pt nuclei NUCLEAR STRUCTURE ^{128}Xe, ^{188,190,192}Os, ^{192,194,196}Pt; calculated potential energy surfaces (PES) in (β, γ), (α, β) and (γ, α) planes, where α represents pairing deformation, IBM Hamiltonian parameters. ^{128,130}Xe, ^{188,190,192}Os, ^{192,194,196}Pt; calculated positive-parity levels, J, g.s. band, γ band, excited 0+ bands including axial+pairing (αβ), triaxial quadrupole (βγ), and triaxial+pairing (αβγ) deformation degrees of freedom, B(E2), B(E2) ratios, parameters X(E0/E2) and ρ^{2}(E0) for 0+ to 0+ E0 transitions. Constrained self-consistent mean-field (SCMF) calculations using PC-PK1 and DD-PK1 energy density functional (EDFs) and pairing interactions, with number-nonconserving interacting boson model (IBM) Hamiltonian. Comparison with experimental data. Relevance to description of shape phase transitions and shape coexistence in γ-soft and triaxial nuclei, with simultaneous treatment of pairing vibrations and triaxial deformations through EDF-based IBM calculations.
doi: 10.1103/PhysRevC.104.024323
2021YA15 Phys.Rev. C 103, 054321 (2021) X.Q.Yang, L.J.Wang, J.Xiang, X.Y.Wu, Z.P.Li Microscopic analysis of prolate-oblate shape phase transition and shape coexistence in the Er-Pt region NUCLEAR STRUCTURE ^{170,172,174,176,178,180,182,184,186,188,190,192}Er, ^{172,174,176,178,180,182,184,186,188,190,192,194}Yb, ^{174,176,178,180,182,184,186,188,190,192,194,196}Hf, ^{176,178,180,182,184,186,188,190,192,194,196,198}W, ^{178,180,182,184,186,188,190,192,194,196,198,200}Os, ^{180,182,184,186,188,190,192,194,196,198,200,202}Pt; calculated potential-energy surfaces (PES) in (β, γ) plane, E(first 4+)/E(first 2+), E(2+ in γ band)/E(first 2+), excitation energies of the first excited 0+ states, B(E2) for the first 2+ states, spectroscopic quadrupole moments of the first 2+ states, B(E2)(for the 2+ in γ band)/B(E2)(for the first 2+), staggering parameters. ^{184,186,188,190,192,194,196,198}Os; calculated levels, J, π of the ground-state bands, γ bands, and excited 0+ bands, probability density distribution surfaces in (β, γ) plane for the g.s., first excited 0+ state, and 2+ in γ band. ^{184}Er, ^{186}Yb; calculated levels, J, π of the ground-state bands, γ bands, and two excited 0+ bands. Self-consistent mean-field (SCMF) calculation with five-dimensional collective Hamiltonian (5DCH) based on covariant density-functional theory (CDFT) with PC-PK1 functional. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.054321
2020GE01 Phys.Rev. C 101, 064302 (2020) J.Geng, J.Xiang, B.Y.Sun, W.H.Long Relativistic Hartree-Fock model for axially deformed nuclei NUCLEAR STRUCTURE ^{20}Ne, ^{56}Fe, ^{182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214}Pb, ^{220}Rn; calculated binding energies and quadrupole deformations. ^{20}Ne; calculated neutron and proton single particle energies, neutron valence orbit splitting, and proportions of the main components in expanding the neutron 2[1/2]+ orbit. Axially deformed relativistic Hartree-Fock (RHF) model using the spherical Dirac Woods-Saxon (DWS), and density-dependent meson-nucleon couplings.
doi: 10.1103/PhysRevC.101.064302
2020NO11 Phys.Rev. C 102, 054313 (2020) K.Nomura, D.Vretenar, Z.P.Li, J.Xiang Pairing vibrations in the interacting boson model based on density functional theory NUCLEAR STRUCTURE ^{122}Xe, ^{152}Nd, ^{154}Sm, ^{156}Gd, ^{158}Dy; calculated potential energy surfaces (PES) in (β, α) plane using constrained RMF+BCS with PC-PK1 energy density functional and separable pairing interaction; calculated levels, J, π, B(E2), matrix elements of the monopole pair transfer operator. Interacting boson model (IBM), based on the nuclear density functional theory, with a boson-number nonconserving IBM Hamiltonian for pairing vibrations for coupling between shape and pairing collective degrees of freedom. Comparison with experimental data taken from the ENSDF database, and other references.
doi: 10.1103/PhysRevC.102.054313
2020XI03 Phys.Rev. C 101, 064301 (2020) J.Xiang, Z.P.Li, T.Niksic, D.Vretenar, W.H.Long Coupling of shape and pairing vibrations in a collective Hamiltonian based on nuclear energy density functionals NUCLEAR STRUCTURE ^{152}Nd, ^{154}Sm, ^{156}Gd, ^{158}Dy; calculated low-lying levels, J, π, lowest 0+ states, B(E2) and E0 transition strengths with quadrupole + pairing collective Hamiltonian and axially symmetric quadrupole collective Hamiltonian based on PC-PK1 energy functional; calculated potential energy surface (PES), probability density distributions and deformation energy surfaces in (β_{2}, α) planes using triaxial relativistic mean-field formalism with PC-PK1 parameter sets. Comparison with experimental data.
doi: 10.1103/PhysRevC.101.064301
2019SU20 Yuan.Wul.Ping. 36, 144 (2019); Nucl.Phys.Rev. 36, 144 (2019) Beyond-mean-field Study of Octupole Shape Evolution in Neutron-deficient Ba Isotopes NUCLEAR STRUCTURE ^{114,116,118,120,122,124}Ba; calculated binding energies, J, π, potential energy surfaces to study octupole deformation and shape transition using a quadrupole-octupole collective Hamiltonian model.
doi: 10.11804/NuclPhysRev.36.02.144
2019ZH26 Phys.Rev. C 99, 054613 (2019) J.Zhao, J.Xiang, Z.P.Li, T.Niksic, D.Vretenar, S.-G.Zhou Time-dependent generator-coordinate-method study of mass-asymmetric fission of actinides NUCLEAR STRUCTURE ^{228}Th; calculated levels, J, π, B(E2), B(E3), free energy along the least-energy fission path as function of the quadrupole deformation. ^{228}Th, ^{234}U, ^{240}Pu, ^{244}Cm, ^{250}Cf; calculated deformation energy curves, axially symmetric quadrupole-octupole energy surface in (β_{20}, β_{30}) plane using microscopic TDGCM+GOA framework based on the relativistic energy density functional DD-PC1 and a separable pairing force of finite range. Comparison with experimental data. NUCLEAR REACTIONS ^{228}Th(γ, F), E^{*}=0-11 MeV; ^{234}U(γ, F), E^{*}=0-11 MeV; ^{240}Pu(γ, F), E^{*}=0-11 MeV; ^{244}Cm(γ, F), E^{*}=0-23 MeV; ^{250}Cf(γ, F), E^{*}=0-8 MeV; calculated fission barriers and charge yields using a self-consistent multidimensionally constrained relativistic mean field model and the finite-temperature time-dependent generator coordinate model (GCM), respectively.
doi: 10.1103/PhysRevC.99.054613
2018WU08 Phys.Rev. C 98, 054319 (2018) Quantum and Coulomb repulsion effects on the bubble structures in ^{204, 206}Hg NUCLEAR STRUCTURE ^{204,206}Hg, ^{208}Pb; calculated radial proton and charge density distributions, longitudinal form factors in elastic electron scattering from the ground states, and depletion factors using beyond-mean-field covariant density functional theory with PC-PK1 parameter sets; analyzed bubble structure in ground and low-lying excited states of ^{204,206}Hg. Comparison with experimental data.
doi: 10.1103/PhysRevC.98.054319
2018XI08 Phys.Rev. C 98, 054308 (2018) J.Xiang, Z.P.Li, W.H.Long, T.Niksic, D.Vretenar Shape evolution and coexistence in neutron-deficient Nd and Sm nuclei NUCLEAR STRUCTURE ^{126,128,130,132,134,136,138,140}Nd, ^{128,130,132,134,136,138,140,142}Sm; calculated potential energy surfaces (PES) in (β_{2}, γ) planes, B(E2) for the first 2+ state, E(first 4+)/E(first 2+) and E(2+ of γ band)/E(first 4+) ratios, β deformation parameters, low-lying levels, J, π, E0 strengths, and distribution of the probability densities for the first and second 0+, and first and third 2+ states in ^{134}Nd and ^{136}Sm, neutron and proton single particle levels in ^{134}Nd, and single-neutron levels in ^{132,136}Nd; analyzed shape evolution and shape coexistence in neutron-deficient even-even Nd and Sm nuclei. Relativistic mean field formalism with PC-PK1 parameter sets, and a separable finite-range pairing interaction with a five-dimensional (5DCH) quadrupole collective Hamiltonian. analyzed Comparison with experimental values.
doi: 10.1103/PhysRevC.98.054308
2018ZH06 Phys.Rev. C 97, 014611 (2018) G.L.Zhang, G.X.Zhang, S.P.Hu, Y.J.Yao, J.B.Xiang, H.Q.Zhang, J.Lubian, J.L.Ferreira, B.Paes, E.N.Cardozo, H.B.Sun, J.J.Valiente-Dobon, D.Testov, A.Goasduff, P.R.John, M.Siciliano, F.Galtarossa, R.Francesco, D.Mengoni, D.Bazzacco, E.T.Li, X.Hao, W.W.Qu One-neutron stripping processes to excited states of ^{90}Y^{*} in the ^{89}Y(^{6}Li, ^{5}Li)^{90}Y^{*} reaction NUCLEAR REACTIONS ^{89}Y(^{6}Li, ^{5}Li)^{90}Y*, E=22, 34 MeV; measured in-beam and off-beam Eγ, Iγ, γγ- and pγ-coin, ΔE-E for protons, deuterons, tritons, and α particles, one-neutron stripping σ(E) using GALILEO array for γ rays and 4π Si-ball EUCLIDES for particles at the Tandem-XTU accelerator of Legnaro National Laboratory. ^{90}Y, ^{93}Mo; deduced level schemes. Comparisons of cross sections with parameter-free coupled reaction channel calculations.
doi: 10.1103/PhysRevC.97.014611
2016XI07 Phys.Rev. C 93, 054324 (2016) J.Xiang, J.M.Yao, Y.Fu, Z.H.Wang, Z.P.Li, W.H.Long Novel triaxial structure in low-lying states of neutron-rich nuclei around A ≈ 100 NUCLEAR STRUCTURE ^{100,102,104,106,108,110}Mo, ^{96}Kr, ^{98}Sr, ^{100}Zr, ^{104}Ru; calculated energy surface contours in (β, γ) plane, low-lying levels, J, π, energies and B(E2) of first 2+ states, reduced diagonal E2 matrix elements, transition quadrupole moments as function of angular momentum, staggering of the γ band using 3DCH prolate and oblate, and 5DCH triaxial configurations. Relativistic mean-field plus BCS wave functions generated with a constraint on triaxial deformations and solving a five-dimensional collective Hamiltonian (5DCH). Comparison with experimental values.
doi: 10.1103/PhysRevC.93.054324
2015WA11 J.Phys.(London) G42, 045108 (2015) Z.H.Wang, J.Xiang, W.H.Long, Z.P.Li Covariant density functional analysis of shape evolution in N = 40 isotones NUCLEAR STRUCTURE ^{62}Ti, ^{64}Cr, ^{66}Fe, ^{68}Ni, ^{70}Zn, ^{72}Ge, ^{74}Se, ^{76}Kr, ^{78}Sr, ^{80}Zr; calculated potential energy surfaces, two-proton separation energies, B(E2), J, π; deduced shape coexistence. Comparison with experimental data, relativistic mean-field plus BCS method with the PC-PK1 functional in the particle-hole channel and a separable pairing force in the particle-particle channel.
doi: 10.1088/0954-3899/42/4/045108
2013FU06 Phys.Rev. C 87, 054305 (2013) Y.Fu, H.Mei, J.Xiang, Z.P.Li, J.M.Yao, J.Meng Beyond relativistic mean-field studies of low-lying states in neutron-deficient krypton isotopes NUCLEAR STRUCTURE ^{68,70,72,74,76,78,80,82,84,86}Kr; calculated levels, J, π, energy surface contours in β-γ plane, B(E2), ρ^{2}(E0), quadrupole deformation, oblate-triaxial-prolate transition, shape coexistence, configuration mixing, angular momentum projection. Beyond relativistic mean-field (RMF) theory PC-PK1 force. Comparison with other calculations, and available experimental data.
doi: 10.1103/PhysRevC.87.054305
2013XI11 Phys.Rev. C 88, 057301 (2013) J.Xiang, Z.P.Li, J.M.Yao, W.H.Long, P.Ring, J.Meng Effect of pairing correlations on nuclear low-energy structure: BCS and general Bogoliubov transformation NUCLEAR STRUCTURE ^{134,136,138,140,142,144,146,148,150,152,154}Sm; calculated binding energies for quadrupole deformation, proton and neutron pairing gaps. ^{152}Sm; calculated potential energy surfaces for quadrupole deformation, proton and neutron pairing gaps, moments of inertia, low-lying levels, J, π, bands, single-particle energy levels and occupation probabilities. Relativistic Hartree-Bogoliubov (RHB) and relativistic mean field plus BCS (RMF+BCS) calculations, and comparison between the two approaches.
doi: 10.1103/PhysRevC.88.057301
2012ME06 Phys.Rev. C 85, 034321 (2012) H.Mei, J.Xiang, J.M.Yao, Z.P.Li, J.Meng Rapid structural change in low-lying states of neutron-rich Sr and Zr isotopes NUCLEAR STRUCTURE ^{88,90,92,94,96,98,100}Sr, ^{90,92,94,96,98,100,102}Zr; calculated level energies and B(E2) for first 2+ states, level energies and B(E0) for first excited 0+ states, E(first 4+)/E(first 2+), moment of inertia, mass parameters, proton radii, isotope shifts, single-particle energies, configuration mixing, total energy surfaces in β-γ plane, wave function distributions. Five-dimensional collective Hamiltonian with parameters from relativistic mean-field and nonrelativistic Skyrme-Hartree-Fock calculations using PC-PK1 and SLy4 interactions, density functional theory. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.034321
2012XI01 Nucl.Phys. A873, 1 (2012) J.Xiang, Z.P.Li, Z.X.Li, J.M.Yao, J.Meng Covariant description of shape evolution and shape coexistence in neutron-rich nuclei at N ≈ 60 NUCLEAR STRUCTURE ^{88,90,92,94,96,98,100,102,104}Kr, ^{88,90,92,94,96,98,100,102,104,106}Sr, ^{90,92,94,96,98,100,102,104,106,108}Zr, ^{92,94,96,98,100,102,104,106,108,110}Mo; calculated charge radii, shape coexistence, deformation using covariant density functional. ^{98}Sr, ^{100}Zr; calculated energies vs deformation, B(E0). ^{98}Sr; calculated levels, J, π vs deformation.
doi: 10.1016/j.nuclphysa.2011.10.002
2011LI08 Int.J.Mod.Phys. E20, 494 (2011) Z.P.Li, J.Xiang, J.M.Yao, H.Chen, J.Meng Sensitivity of the nuclear collectivity to the pairing strength in ^{150}Nd NUCLEAR STRUCTURE ^{150}Nd; calculated neutron pairing gaps, ratio of energies, B(E2).
doi: 10.1142/S0218301311017909
2011YA04 Int.J.Mod.Phys. E20, 482 (2011) J.M.Yao, Z.X.Li, J.Xiang, H.Mei, J.Meng Low-lying states in ^{30}Mg: A beyond relativistic mean-field investigation NUCLEAR STRUCTURE ^{30}Mg; calculated quadrupole energy surfaces, probability distributions, energies, B(E2). Gogny force, comparison with experimental data.
doi: 10.1142/S0218301311017880
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