NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = Z.M.Niu Found 57 matches. 2024LI14 J.Phys.(London) G51, 015103 (2024) W.F.Li, X.Y.Zhang, Y.F.Niu, Z.M.Niu Comparative study of neural network and model averaging methods in nuclear β-decay half-life predictions NUCLEAR STRUCTURE Z<100; analyzed β-decay T1/2 using the two-hidden-layer neural network and compared with the model averaging method; deduced half-life predictions of the neural network.
doi: 10.1088/1361-6471/ad0314
2024ZH06 Nucl.Phys. A1043, 122820 (2024) X.Y.Zhang, W.F.Li, J.Y.Fang, Z.M.Niu Nuclear mass predictions with the naive Bayesian model averaging method NUCLEAR STRUCTURE Z=10-110; analyzed available data; deduced atomic masses using a naive Bayesian model averaging (NBMA) method.
doi: 10.1016/j.nuclphysa.2024.122820
2023HA28 Phys.Lett. B 844, 138092 (2023) Sensitivity of the r-process rare-earth peak abundances to nuclear masses
doi: 10.1016/j.physletb.2023.138092
2023HA41 Phys.Rev. C 108, L062802 (2023) Impact of nuclear β-decay rates on the r-process rare-earth peak abundances
doi: 10.1103/PhysRevC.108.L062802
2023HO11 Phys.Rev. C 108, 054312 (2023) D.S.Hou, A.Takamine, M.Rosenbusch, W.D.Xian, S.Iimura, S.D.Chen, M.Wada, H.Ishiyama, P.Schury, Z.M.Niu, H.Z.Liang, S.X.Yan, P.Doornenbal, Y.Hirayama, Y.Ito, S.Kimura, T.M.Kojima, W.Korten, J.Lee, J.J.Liu, Z.Liu, S.Michimasa, H.Miyatake, J.Y.Moon, S.Naimi, S.Nishimura, T.Niwase, T.Sonoda, D.Suzuki, Y.X.Watanabe, K.Wimmer, H.Wollnik First direct mass measurement for neutron-rich 112Mo with the new ZD-MRTOF mass spectrograph system
doi: 10.1103/PhysRevC.108.054312
2023YA26 Phys.Rev. C 108, 034315 (2023) Z.-X.Yang, X.-H.Fan, T.Naito, Z.-M.Niu, Z.-Pa.Li, H.Liang Calibration of nuclear charge density distribution by back-propagation neural networks
doi: 10.1103/PhysRevC.108.034315
2023ZH37 Phys.Rev. C 108, 024310 (2023) X.Y.Zhang, Z.M.Niu, W.Sun, X.W.Xia Nuclear charge radii and shape evolution of Kr and Sr isotopes with the deformed relativistic Hartree-Bogoliubov theory in continuum NUCLEAR STRUCTURE 70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134Kr, 78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144Sr; calculated binding energy, two-neutron separation energy S(2n), charge radii, quadrupole deformation parameters, potential energy curves. 100Sn; calculated wave function, charge radii as a function of quadrupole deformation parameter. Deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) calculations and DRHBc extended to go beyond mean-field framework by performing a two-dimensional collective Hamiltonian (2DCH). Comparison to experimental data.
doi: 10.1103/PhysRevC.108.024310
2022FA08 Phys.Rev. C 106, 054318 (2022) Gross theory of β decay by considering the spin-orbit splitting from relativistic Hartree-Bogoliubov theory RADIOACTIVITY Z=20-82, N=35-128(β-); 130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173Sn, 68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100Ni, 71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105Zn, 113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147Ag(β-); calculated T1/2. Gross theory with including the spin-orbit splitting from relativistic Hartree-Bogoliubov theory. Comparison with microscopic SHFB+FAM, RHB+QRPA, and FRDM12+QRPA models. Comparison to experimental data. NUCLEAR STRUCTURE 90Zr, 208Pb, 130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173Sn, 68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100Ni; calculated central energies of the Gamow-Teller and the Fermi transitions, spin-orbit splitting. Comparison to experimental data.
doi: 10.1103/PhysRevC.106.054318
2022HA23 Astrophys.J. 933, 3 (2022) Influence of Spontaneous Fission Rates on the r-process Nucleosynthesis
doi: 10.3847/1538-4357/ac6fdc
2022HE11 Chin.Phys.C 46, 054102 (2022) C.He, Z.-M.Niu, X.-J.Bao, J.-Y.Guo Research on α-decay for the superheavy nuclei with Z = 118-120 RADIOACTIVITY 269,271Sg, 270,271,272,273,274Bh, 273,275Hs, 274,275,276Mt, 278Mt, 277,279,281Ds, 278,279,280,281,282Rg, 281,283,285Cn, 282,283,284,285,286Nh, 285,286,287,288,289Fl, 287,288,289,290Mc, 290,291,292,293Lv, 293,294Ts, 294Og, 281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304118, 284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306119, 287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308120(α); calculated T1/2. Comparison with available data.
doi: 10.1088/1674-1137/ac4c3a
2022MI14 Phys.Rev. C 106, 024306 (2022) Calculation of β-decay half-lives within a Skyrme-Hartree-Fock-Bogoliubov energy density functional with the proton-neutron quasiparticle random-phase approximation and isoscalar pairing strengths optimized by a Bayesian method RADIOACTIVITY 87,88,89,90,91,92,93,94,95,96,97,98,99,100Kr, 88,89,90,91,92,93,94,95,96,97,98,99,100,101Rb, 101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137Mo, 102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138Tc(β-); 113,115,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143Cd, 116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144In(β-); 155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192Sm, 156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193Eu(β-); Z=8-110(β-); A=20-368(β-); calculated β--decay T1/2, partial T1/2 for Gamow-Teller decays, Q values, isoscalar spin-triplet strength for neutron-rich nuclei using proton-neutron quasiparticle random-phase approximation (pnQRPA), proton-neutron quasiparticle Tamm-Dancoff approximation (pnQTDA), with Skryme energy density functional, and Bayesian neural network (BNN), the last for isoscalar spin-triplet strength. Calculated T1/2, Q values, isoscalar spin-triplet strength for 5580 neutron-rich nuclei spanning Z=8-110, N=12-258 and A=20-368 are listed in Supplemental Material of the paper. Comparison with available experimental T1/2 in NUBASE2016.
doi: 10.1103/PhysRevC.106.024306
2022NI10 Phys.Rev. C 106, L021303 (2022) Nuclear mass predictions with machine learning reaching the accuracy required by r-process studies ATOMIC MASSES 159,160,161,162,163,164,165,166Nd, 160,161,162,163,164,165,166,167Pm, 161,162,163,164,165,166,167,168Sm, 162,163,164,165,166,167,168,169Eu, 163,164,165,166,167,168,169,170Gd, 164,165,166,167,168,169,170,171Tb; calculated S(2n). Machine learning algorithm. Bayesian neural networks by learning the mass surface of even-even nuclei and the correlation energies to their neighboring nuclei. Comparison to experimental data.
doi: 10.1103/PhysRevC.106.L021303
2022WA13 Phys.Lett. B 830, 137154 (2022) Y.F.Wang, X.Y.Zhang, Z.M.Niu, Z.P.Li Study of nuclear low-lying excitation spectra with the Bayesian neural network approach NUCLEAR STRUCTURE 20,22,24,26,28,30,32,34,36,38,40Mg, 36,38,40,42,44,46,48,50,52,54Ca, 72,74,76,78,80,82,84,86,88,90,92,94,96,98Kr, 130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162Sm, 182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216Pb; analyzed available data; deduced energies, J, π of the low-lying spectra in Bayesian neural network (BNN) approach.
doi: 10.1016/j.physletb.2022.137154
2021CH36 Astrophys.J. 915, 78 (2021) H.Cheng, B.-H.Sun, L.-H.Zhu, M.Kusakabe, Y.Zheng, L.C.He, T.Kajino, Z.-M.Niu, T.-X.Li, C.-B.Li, D.-X.Wang, M.Wang, G.-S.Li, K.Wang, L.Song, G.Guo, Z.-Y.Huang, X.-L.Wei, F.-W.Zhao, X.-G.Wu, Y.Abulikemu, J.-C.Liu, P.Fan Measurements of 160Dy(p, γ) at Energies Relevant for the Astrophysical γ Process NUCLEAR REACTIONS 160Dy(p, γ), 161Dy(p, n), E=3.4-7 MeV; measured reaction products, Eγ, Iγ; deduced σ, S-factor, astrophysical reaction rates. Comparison with TALYS, NON-SMOKER calculations.
doi: 10.3847/1538-4357/ac00b1
2021SH22 Chin.Phys.C 45, 044103 (2021) Exploring the uncertainties in theoretical predictions of nuclear β-decay half-lives NUCLEAR STRUCTURE N=50, 82, 126; calculated β-decay T1/2 and uncertainties.
doi: 10.1088/1674-1137/abdf42
2021YU06 Chin.Phys.C 45, 124107 (2021) Magnetic moment predictions of odd-A nuclei with the Bayesian neural network approach NUCLEAR MOMENTS 207,209Pb, 209Bi, 207Tl, Cd, Cs, 23F, 23Si, 37S, 39Sc, 53K, 41Ti, 53,61Co, 79Cu, 59Zn, 81Ge, 93Mo, 93Ru, 97Pd, 99,103,129In, 101Sn, 113,135Sb, 181Tl, 197,215Bi; analyzed available data; deduced nuclear magnetic moments using the BNN-I4 approach. Bayesian neural network (BNN).
doi: 10.1088/1674-1137/ac28f9
2020MA01 Chin.Phys.C 44, 014104 (2020) C.-W.Ma, D.Peng, H.-L.Wei, Z.-M.Niu, Y.-T.Wang, R.Wada Isotopic cross-sections in proton induced spallation reactions based on the Bayesian neural network method NUCLEAR REACTIONS 36,40Ar, 40Ca, 56Fe, 136Xe, 197Au, 208Pb, 238U(p, X), E=200-1500 MeV/nucleon; analyzed available data; deduced σ using the Bayesian neural network (BNN) method.
doi: 10.1088/1674-1137/44/1/014104
2020MA19 Phys.Rev. C 101, 045204 (2020) C.Ma, M.Bao, Z.M.Niu, Y.M.Zhao, A.Arima New extrapolation method for predicting nuclear masses ATOMIC MASSES 121Rh, 123Pd, 129,131Cd, 138Sb, 141I, 149Ba, 150,151La, 137Eu, 190Tl, 215Pb, 194Bi, 198At, 197,198,202,232,233Fr, 201Ra, 205,206Ac, 215,216,221,222U, 219Np, 229Am, 259No; A=20-260; Z=36-106, N=56-160; calculated mass excesses using method based on the Garvey-Kelson mass relations and the Jannecke mass formulas. Comparison with evaluated data in AME2016, and other theoretical predictions over the entire chart of nuclides. Z=43-106, A=120-273; predicted masses in Supplemental material for about 600 nuclei for which no experimental data exist. Z=8-106, N=10-157; deduced parameters for each prediction of masses based on AME2016, listed in Supplemental material.
doi: 10.1103/PhysRevC.101.045204
2019CA08 Phys.Rev. C 99, 024314 (2019) X.-N.Cao, Q.Liu, Z.-M.Niu, J.-Y.Guo Systematic studies of the influence of single-particle resonances on neutron halo and skin in the relativistic-mean-field and complex-momentum-representation methods NUCLEAR STRUCTURE 40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74Ca, 50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84Ni, 114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154Sn, 200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240Pb; calculated neutron rms radii, S(2n), single-neutron energies, occupation probabilities of single-neutron levels, and density distributions of 74Ca, 84Ni, 160Sn, 240Pb using relativistic-mean-field and complex-momentum-representation (RMF-CMR) method. Comparison with relativistic Hartree-Bogoliubov calculations, and with experimental data.
doi: 10.1103/PhysRevC.99.024314
2019MA56 Phys.Rev. C 100, 024330 (2019) C.Ma, Z.Li, Z.M.Niu, H.Z.Liang Influence of nuclear mass uncertainties on radiative neutron-capture rates NUCLEAR REACTIONS 124Mo, 126Ru, 194Er, 196Yb(n, γ), T9=0.0001-10; Sb, Zr(n, γ), T9=1; calculated radiative n-capture rates with TALYS using ten mass models to determine the uncertainties. Z=5-100, N=10-230; analyzed uncertainties of radiative neutron-capture rates from nuclear mass uncertainties at different temperatures.
doi: 10.1103/PhysRevC.100.024330
2019NI07 Phys.Rev. C 99, 064307 (2019) Z.M.Niu, H.Z.Liang, B.H.Sun, W.H.Long, Y.F.Niu Predictions of nuclear β-decay half-lives with machine learning and their impact on r-process nucleosynthesis RADIOACTIVITY 67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89Ni, 122Zr, 123Nb, 124Mo, 125Tc, 126Ru, 127Rh, 128Pd, 129Ag, 130Cd, 131In, 132Sn, 133Sb, 134Te, 187Pm, 188Sm, 189Eu, 190Gd, 191Tb, 192Dy, 193Ho, 194Er, 195Tm, 196Yb, 197Lu, 198Hf, 199Ta, 200W, 201Re, 202Os, 203Ir, 204Pt, 205Au, 206Hg, 207Tl(β-); calculated T1/2, and uncertainties using machine-learning approach based on Bayesian neural network (BNN). Comparison with experimental values, and with other theoretical predictions. A=90-210; discussed impact on r-process nucleosynthesis calculations.
doi: 10.1103/PhysRevC.99.064307
2019NI11 Phys.Rev. C 100, 054311 (2019) Comparative study of radial basis function and Bayesian neural network approaches in nuclear mass predictions ATOMIC MASSES Z=8-110, N=8-160; analyzed nuclear masses and S(n) for 1800 nuclei, and investigated predictive power of radial basis function (RBF), radial basis function with odd-even effect (RBFoe), and Bayesian neural network (BNN) approaches; deduced rms deviations from the evaluated experimental masses in AME2016.
doi: 10.1103/PhysRevC.100.054311
2019SH24 Chin.Phys.C 43, 074104 (2019) Mass predictions of the relativistic continuum Hartree-Bogoliubov model with radial basis function approach ATOMIC MASSES N=0-160; analyzed available data; calculated nuclear masses using radial basis function (RBF) approach.
doi: 10.1088/1674-1137/43/7/074104
2018DI08 Phys.Rev. C 98, 014316 (2018) K.-M.Ding, M.Shi, J.-Y.Guo, Z.-M.Niu, H.Liang Resonant-continuum relativistic mean-field plus BCS in complex momentum representation NUCLEAR STRUCTURE 120,122,124,126,128,130,132,134,136,138,140Zr; calculated neutron single particle energies and widths, occupation probabilities of neutron single particle levels, and neutron single particle spectra and density distributions in 124Zr. 80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140Zr; calculated S(2n), rms neutron radii. Resonant-continuum relativistic mean-field plus BCS in complex momentum representation with the BCS approximation for pairing correlations. Comparison with available experimental values.
doi: 10.1103/PhysRevC.98.014316
2018JI08 Phys.Rev. C 98, 064323 (2018) P.Jiang, Z.M.Niu, Y.F.Niu, W.H.Long Strutinsky shell correction energies in relativistic Hartree-Fock theory NUCLEAR STRUCTURE 16O, 36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51Ca, 78Ni, 100,132Sn, 178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215Pb, 277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320Og, 75Mn, 76Fe, 77Co, 78Ni, 79Cu, 80Zn, 81Ga, 82Ge, 83As, 84Se, 85Br, 86Kr, 87Rb, 88Sr, 89Y, 90Zr, 91Nb, 92Mo, 93Tc, 94Ru, 95Rh, 96Pd, 97Ag, 98Cd, 99In, 101Sb, 102Te, 103I, 104Xe, 105Cs; calculated shell correction energies, radial density of 16O, 40Ca, 208Pb, and single neutron spectra of 208Pb using relativistic Hartree-Fock (RHF) theory with the Strutinsky method.
doi: 10.1103/PhysRevC.98.064323
2018NI08 Phys.Lett. B 780, 325 (2018) Y.F.Niu, Z.M.Niu, G.Colo, E.Vigezzi Interplay of quasiparticle-vibration coupling and pairing correlations on β-decay half-lives RADIOACTIVITY 68,70,72,74,76,78,80,82,84,86Ni, 130,132,134,136,138,140,142,144,146Sn(β-); calculated neutron and proton single-particle spectra, T1/2. Comparison with available data.
doi: 10.1016/j.physletb.2018.02.061
2018SH21 Phys.Rev. C 97, 064301 (2018) Combination of complex momentum representation and Green's function methods in relativistic mean-field theory NUCLEAR STRUCTURE 74Ca; calculated single particle resonance for g7/2 orbital, level density distribution, and density of continuum states for the 1g7/2 orbital, continuum level density (CLD) for all the resonance states, density distributions for the 1g7/2, 2d3/2, 3s1/2, 2d5/2 and 1g9/2 orbitals, single-particle levels, and wave function of the 2d3/2 resonant state. Combined complex momentum representation method with Green's function method in the relativistic mean-field framework (RMF-CMR-GF); discussed single-particle wave functions and densities for halo structure in 74Ca.
doi: 10.1103/PhysRevC.97.064301
2017FA02 Phys.Rev. C 95, 024311 (2017) Z.Fang, M.Shi, J.-Y.Guo, Z.-M.Niu, H.Liang, S.-S.Zhang Probing resonances in the Dirac equation with quadrupole-deformed potentials with the complex momentum representation method NUCLEAR STRUCTURE 37Mg; calculated levels, resonances, single-particle resonances, J, π, single-particle energies for deformation (Nilsson orbitals) for the bound and resonant states concerned, radial-momentum probability distributions for the bound and resonant deformed states by solving the Dirac equation in complex momentum representation, and a set of coupled differential equations by the coupled-channel method.
doi: 10.1103/PhysRevC.95.024311
2017NI07 Phys.Rev. C 95, 044301 (2017) Z.M.Niu, Y.F.Niu, H.Z.Liang, W.H.Long, J.Meng Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations NUCLEAR STRUCTURE 36,38,40,42,44,46,48,50,52,54,56,58,60Ca, 54,56,58,60,62,64,68,70,72,74,76,78,80,82,84,86,88Ni, 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148Sn; calculated nuclear masses, S(2n), Q(β) values for Ca, Ni and Sn isotopes, neutron-skin thicknesses, IAS and GT excitation energies for Sn isotopes using the RHFB theory with PKO1 interaction and the RHB theory with DD-ME2 effective interaction. 118Sn; calculated running sum of the GT transition probabilities, and GT strength distribution using RHFB+QRPA approach with PKO1 interaction. 114Sn; calculated transition probabilities for the IAS by RHFB+QRPA, RHF+RPA, RHFB+RPA, RHFB+QRPA* with PKO1 interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.044301
2017SH09 Eur.Phys.J. A 53, 40 (2017) M.Shi, X.-X.Shi, Z.-M.Niu, T.-T.Sun, J.-Y.Guo Relativistic extension of the complex scaled Green's function method for resonances in deformed nuclei NUCLEAR STRUCTURE A=31; calculated continuum level density for the 9/2[404] state, density of continuum states with quadrupole deformation and selected rotation angles; deduced influence of potential and its parameters.
doi: 10.1140/epja/i2017-12241-6
2017TI04 Chin.Phys.C 41, 044104 (2017) Y.-J.Tian, T.-H.Heng, Z.-M.Niu, Q.Liu, J.-Y.Guo Exploration of resonances by using complex momentum representation NUCLEAR STRUCTURE 17O; calculated the bound states and resonant states using the complex momentum representation in comparison with those obtained in coordinate representation by the complex scaling method for resonances.
doi: 10.1088/1674-1137/41/4/044104
2016LI35 Phys.Rev.Lett. 117, 062502 (2016) N.Li, M.Shi, J.-Y.Guo, Z.-M.Niu, H.Liang Probing Resonances of the Dirac Equation with Complex Momentum Representation NUCLEAR STRUCTURE 120Sn; calculated energies and widths of single neutron state resonances. Relativistic mean-field (RMF) theory.
doi: 10.1103/PhysRevLett.117.062502
2016NI16 Phys.Rev. C 94, 054315 (2016) Z.M.Niu, B.H.Sun, H.Z.Liang, Y.F.Niu, J.Y.Guo Improved radial basis function approach with odd-even corrections ATOMIC MASSES Z=8-100, N=8-160, A=16-260; calculated masses using relativistic mean-field (RMF) with radial basis function (RBF) approach, and RMF with RBF considering odd-even effects (RBFoe). Z=31, 32, N=31-53; calculated S(n) with RMF+RBF, and RMF+RBFoe approaches. Comparison with experimental data taken form AME-2012.
doi: 10.1103/PhysRevC.94.054315
2016SH25 Phys.Rev. C 94, 024302 (2016) X.-X.Shi, M.Shi, Z.-M.Niu, T.-H.Heng, J.-Y.Guo Probing resonances in deformed nuclei by using the complex-scaled Green's function method NUCLEAR STRUCTURE 45S; calculated level densities as a function of quadrupole deformation β2, widths of resonant states, neutron single-particle levels using complex-scaled Green's function (CGF) method with theory of deformed nuclei. Comparison with calculations using complex scaling, and coupled-channel methods.
doi: 10.1103/PhysRevC.94.024302
2016SU07 J.Phys.(London) G43, 045107 (2016) Single-proton resonant states and the isospin dependence investigated by Green's function relativistic mean field theory NUCLEAR STRUCTURE 120Sn; calculated single-particle levels and density of states, resonance parameters. The relativistic mean field theory formulated with Green's function method (RMF-GF).
doi: 10.1088/0954-3899/43/4/045107
2016TA11 Chin.Phys.C 40, 074102 (2016) Influence of binding energies of electrons on nuclear mass predictions ATOMIC MASSES Z<120; calculated impact of binding energies of electrons on nuclear mass predictions.
doi: 10.1088/1674-1137/40/7/074102
2016WA06 J.Phys.(London) G43, 045108 (2016) Z.Y.Wang, Y.F.Niu, Z.M.Niu, J.Y.Guo Nuclear β-decay half-lives in the relativistic point-coupling model RADIOACTIVITY O, Ne, Mg, Si, S, Ar, Ca, Ti, Cr, Ni, 62,64,66,68,70,72Fe, 78,80,82Zn(β-); calculated T1/2, Q-value. Nonlinear point-coupling effective interaction PC-PK1, comparison with experimental data.
doi: 10.1088/0954-3899/43/4/045108
2015LI04 Phys.Rev. C 91, 024311 (2015) D.-P.Li, S.-W.Chen, Z.-M.Niu, Q.Liu, J.-Y.Guo Further investigation of relativistic symmetry in deformed nuclei by similarity renormalization group NUCLEAR STRUCTURE 154Dy; calculated single-particle energies, spin and pseudospin energy splittings as function of β2 deformation parameter, contributions by the nonrelativistic, dynamical, and spin-orbit coupling terms. Origin and breaking mechanism of relativistic symmetries for an axially deformed nucleus. Relativistic symmetry approach using the similarity renormalization group (SRG).
doi: 10.1103/PhysRevC.91.024311
2015SH34 Phys.Rev. C 92, 054313 (2015) M.Shi, J.-Y.Guo, Q.Liu, Z.-M.Niu, T.-H.Heng Relativistic extension of the complex scaled Green function method NUCLEAR STRUCTURE 120Sn; calculated energies and widths of single-neutron resonant states using RMF-CGF method, complex scaled Green function method extended to relativistic framework. Comparison with other theoretical calculations.
doi: 10.1103/PhysRevC.92.054313
2015WA12 J.Phys.(London) G42, 055112 (2015) Z.Y.Wang, Z.M.Niu, Q.Liu, J.Y.Guo Systematic calculations of α-decay half-lives with an improved empirical formula NUCLEAR STRUCTURE A<260; analyzed available data; calculated α-decay T1/2; deduced a new formula. Comparison with experimental data.
doi: 10.1088/0954-3899/42/5/055112
2014GU05 Phys.Rev.Lett. 112, 062502 (2014) J.-Y.Guo, S.-W.Chen, Z.-M.Niu, D.-P.Li, Q.Liu Probing the Symmetries of the Dirac Hamiltonian with Axially Deformed Scalar and Vector Potentials by Similarity Renormalization Group NUCLEAR STRUCTURE 154Dy; calculated single-particle levels, spin energy splitting and their correlation with the deformation parameters.
doi: 10.1103/PhysRevLett.112.062502
2014LI14 Phys.Scr. 89, 054018 (2014) H.Liang, T.Nakatsukasa, Z.Niu, J.Meng Finite-amplitude method: an extension to the covariant density functionals NUCLEAR STRUCTURE 208Pb; calculated isoscalar giant monopole resonances. The finite-amplitude method for optimizing the computational performance of the random-phase approximation.
doi: 10.1088/0031-8949/89/5/054018
2014SH28 Phys.Rev. C 90, 034319 (2014) M.Shi, Q.Liu, Z.-M.Niu, J.-Y.Guo Relativistic extension of the complex scaling method for resonant states in deformed nuclei NUCLEAR STRUCTURE A=31; calculated single-particle levels and resonance parameters for all the concerned resonant states in nuclei with A=31. Complex scaling method extended to relativistic framework for resonances in deformed nuclei.
doi: 10.1103/PhysRevC.90.034319
2014ZH09 Phys.Rev. C 89, 034307 (2014) Z.-L.Zhu, Z.-M.Niu, D.-P.Li, Q.Liu, J.-Y.Guo Probing single-proton resonances in nuclei by the complex-scaling method NUCLEAR STRUCTURE 114,116,118,120,122,124,132Sn, 126Ru, 128Pd, 130Cd, 134Te, 136Xe; calculated energies and width of single-proton resonant states. 40Ca, 56,78Ni, 100,132Sn, 208Pb; calculated difference of energies of single-proton resonant states for doubly magic nuclei with and without Coulomb exchange terms. Complex scaling method with relativistic mean-field theory (RMF-CMS). Comparison with other theoretical calculations.
doi: 10.1103/PhysRevC.89.034307
2014ZH24 Phys.Rev. C 90, 014303 (2014) J.S.Zheng, N.Y.Wang, Z.Y.Wang, Z.M.Niu, Y.F.Niu, B.Sun Mass predictions of the relativistic mean-field model with the radial basis function approach ATOMIC MASSES Z=8-100, N=8-170; calculated masses, S(2n), solar r-process abundances. Radial basis function (RBF) with relativistic mean-field (RMF) model. Comparison with experimental values from AME-2012.
doi: 10.1103/PhysRevC.90.014303
2013LI20 Phys.Rev. C 87, 054310 (2013) H.Liang, T.Nakatsukasa, Z.Niu, J.Meng Feasibility of the finite-amplitude method in covariant density functional theory NUCLEAR STRUCTURE 16O; calculated unperturbed 0+ excitation strengths. 132Sn, 208Pb; calculated isoscalar giant monopole resonance (ISGMR). Self-consistent relativistic random-phase approximation (RPA) and finite-amplitude method (FAM) based on RMF theory. Comparison with experimental data. Discussed effects of the Dirac sea in the matrix-FAM scheme.
doi: 10.1103/PhysRevC.87.054310
2013ME08 Phys.Scr. T154, 014010 (2013) J.Meng, Y.Chen, H.Z.Liang, Y.F.Niu, Z.M.Niu, L.S.Song, W.Zhao, Z.Li, B.Sun, X.D.Xu, Z.P.Li, J.M.Yao, W.H.Long, T.Niksic, D.Vretenar Mass and lifetime of unstable nuclei in covariant density functional theory NUCLEAR STRUCTURE A=80-195; calculated masses, binding energies, β-decay T1/2. Finite-range droplet model and Weizsacker-Skyrme models, comparison with available data.
doi: 10.1088/0031-8949/2013/T154/014010
2013ME09 J.Phys.:Conf.Ser. 445, 012016 (2013) J.Meng, Y.Chen, Z.M.Niu, B.Sun, P.W.Zhao Impact on the r-process from the nuclear mass and lifetime in covariant density functional theory
doi: 10.1088/1742-6596/445/1/012016
2013NI07 Phys.Rev. C 87, 037301 (2013) Z.M.Niu, Q.Liu, Y.F.Niu, W.H.Long, J.Y.Guo Nuclear effective charge factor originating from covariant density functional theory NUCLEAR STRUCTURE Z=20, A=38-78; Z=28, A=60-100; Z=50, A=100-180; Z=82, A=180-270; calculated effective charge factors, Coulomb exchange energies, and relative deviations of Coulomb exchange energies as function of mass number for semi-magic nuclei. Relativistic Hartree-Fock-Bogoliubov (RHFB) approach with PKA1 effective interaction.
doi: 10.1103/PhysRevC.87.037301
2013NI09 Phys.Rev. C 87, 051303 (2013) Z.M.Niu, Y.F.Niu, Q.Liu, H.Z.Liang, J.Y.Guo Nuclear β+/EC decays in covariant density functional theory and the impact of isoscalar proton-neutron pairing RADIOACTIVITY 32,34Ar, 36,38Ca, 40,42Ti, 46,48,50Fe, 50,52,54Ni, 56,58Zn, 96,98,100Cd, 100,102,104Sn(β+), (EC); calculated half-lives, B(GT). Self-consistent proton-neutron QRPA with relativistic Hartree-Bogoliubov (QRPA+RHB) calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.87.051303
2013NI12 Phys.Lett. B 723, 172 (2013) Z.M.Niu, Y.F.Niu, H.Z.Liang, W.H.Long, T.Niksic, D.Vretenar, J.Meng β-decay half-lives of neutron-rich nuclei and matter flow in the r-process RADIOACTIVITY Fe, Cd, 124Mo, 126Ru, 128Pd, 130Cd, 134Sn(β-); calculated T1/2, solar r-process abundances. Fully self-consistent proton-neutron quasiparticle random phase approximation (QRPA), based on the spherical relativistic Hartree-Fock-Bogoliubov (RHFB) framework.
doi: 10.1016/j.physletb.2013.04.048
2013NI14 Phys.Rev. C 88, 024325 (2013) Z.M.Niu, Z.L.Zhu, Y.F.Niu, B.H.Sun, T.H.Heng, J.Y.Guo Radial basis function approach in nuclear mass predictions ATOMIC MASSES Z=8-108, N=8-160; calculated masses using radial basis function approach with eight nuclear mass models; comparison with AME-1995, AME-2003 and AME-2012 evaluated masses. Discussed potential of RBF approach in prediction of masses.
doi: 10.1103/PhysRevC.88.024325
2013NI16 Phys.Rev. C 88, 034308 (2013) Y.F.Niu, Z.M.Niu, N.Paar, D.Vretenar, G.H.Wang, J.S.Bai, J.Meng Pairing transitions in finite-temperature relativistic Hartree-Bogoliubov theory NUCLEAR STRUCTURE 124Sn; calculated binding energy/nucleon, entropy, neutron radius, charge radius, neutron pairing energy, neutron pairing gap, specific heat and contour plot for the neutron pairing gap as function of temperature. 36,38,40,42,44,46,48,50,52,54,56,58,60,62Ca, 54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92Ni, 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170Sn, 182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248,250,252,254,256,258,260,262,264Pb; calculated neutron pairing gap as a function of temperature, neutron pairing gaps at zero temperature and critical temperatures for pairing transition. Finite temperature relativistic Hartree-Bogoliubov (FTRHB) theory based on point-coupling functional PC-PK1 with Gogny or separable pairing forces.
doi: 10.1103/PhysRevC.88.034308
2013XU02 Phys.Rev. C 87, 015805 (2013) X.D.Xu, B.Sun, Z.M.Niu, Z.Li, Y.-Z.Qian, J.Meng Reexamining the temperature and neutron density conditions for r-process nucleosynthesis with augmented nuclear mass models ATOMIC MASSES A=80, 130, 195; calculated T9-neutron density conditions required for waiting-point nuclei with RMF, HFB-17, FRDM, and WS* nuclear mass models. Effects of uncertainty in S(n) for 78Ni, 82Zn, 191Tb, and 197Tm on the required T9-nn conditions. Precise mass measurements required for 76Ni, 78Ni, 82Zn, 131,132Cd. Relevance to r-process nucleosynthesis.
doi: 10.1103/PhysRevC.87.015805
2012LI48 Phys.Rev. C 86, 054312 (2012) Q.Liu, J.-Y.Guo, Z.-M.Niu, S.-W.Chen Resonant states of deformed nuclei in the complex scaling method NUCLEAR STRUCTURE 31Ne; calculated energies and widths of bound states, and low-lying neutron resonances, neutron single-particle levels using the complex scaling method. Resonances of deformed nuclei.
doi: 10.1103/PhysRevC.86.054312
2010ME09 Nucl.Phys. A834, 436c (2010) J.Meng, Z.P.Li, H.Z.Liang, Z.M.Niu, J.Peng, B.Qi, B.Sun, S.Y.Wang, J.M.Yao, S.Q.Zhang Covariant Density Functional Theory for Nuclear Structure and Application in Astrophysics NUCLEAR STRUCTURE 144,146,148,150,152,154,156Nd; calculated levels, J, π, B(E2), mass excess using covariant density functional theory. Comparison with data.
doi: 10.1016/j.nuclphysa.2010.01.058
2009NI15 Phys.Rev. C 80, 065806 (2009) Influence of nuclear physics inputs and astrophysical conditions on the Th/U chronometer
doi: 10.1103/PhysRevC.80.065806
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