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NSR database version of April 11, 2024.

Search: Author = Z.X.Ren

Found 17 matches.

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2024XU01      Phys.Rev. C 109, 014311 (2024)

F.F.Xu, B.Li, Z.X.Ren, P.W.Zhao

Tetrahedral shape of 110Zr from covariant density functional theory in 3D lattice space

doi: 10.1103/PhysRevC.109.014311
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2024ZH07      Phys.Rev. C 109, 024316 (2024)

D.D.Zhang, B.Li, D.Vretenar, T.Niksic, Z.X.Ren, P.W.Zhao, J.Meng

Ternary quasifission in collisions of actinide nuclei

doi: 10.1103/PhysRevC.109.024316
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2023LI04      Phys.Rev. C 107, 014303 (2023)

B.Li, D.Vretenar, Z.X.Ren, T.Niksic, J.Zhao, P.W.Zhao, J.Meng

Fission dynamics, dissipation, and clustering at finite temperature

NUCLEAR STRUCTURE 240Pu, 234U, 244Cm, 250Cf; calculated self-consistent deformation energy surface for the process of induced fission, induced fission trajectories evolution, proton localization functions, density profile immediately prior to the scission event. Microscopic finite-temperature model based on time dependent nuclear density functional theory (TDDFT).

doi: 10.1103/PhysRevC.107.014303
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2022RE01      Phys.Rev. C 105, L011301 (2022)

Z.X.Ren, P.W.Zhao, J.Meng

Dynamics of rotation in chiral nuclei

NUCLEAR STRUCTURE 135Nd; calculated total energy and Routhian surfaces, trajectories of the tilted angles for the total angular momenta in the body-fixed frame, excitation energies of the two pairs of chiral doublet bands, and compared with experimental data; deduced a new mechanism of chiral precession from the microscopic dynamics of the total angular momentum in the body-fixed frame (illustrations as movies given in the Supplemental Material of the paper). Self-consistent microscopic calculations based on time-dependent and tilted axis cranking covariant density functional theory (TAC-CDFT).

doi: 10.1103/PhysRevC.105.L011301
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2022RE04      Phys.Rev. C 105, 044313 (2022)

Z.X.Ren, J.Zhao, D.Vretenar, T.Niksic, P.W.Zhao, J.Meng

Microscopic analysis of induced nuclear fission dynamics

NUCLEAR STRUCTURE 240Pu; calculated deformation energy surface in the plane of quadrupole-octupole axially symmetric deformation parameters, induced fission charge yields and fragments distributions, fission trajectories on the the self-consistent deformation energy surface, total kinetic energies of the fragments from induced fission. Framework that combines the time-dependent generator coordinate method (TDGCM) and time-dependent nuclear density functional theory (TDDFT). Comparison to available experimental data.

doi: 10.1103/PhysRevC.105.044313
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2022RE05      Phys.Rev.Lett. 128, 172501 (2022)

Z.X.Ren, D.Vretenar, T.Niksic, P.W.Zhao, J.Zhao, J.Meng

Dynamical Synthesis of 4He in the Scission Phase of Nuclear Fission

RADIOACTIVITY 240Pu(SF); analyzed available data. 4,6He, 3H; deduced light cluster emission. Time-dependent density functional theory, based on a relativistic energy density functional including pairing correlations.

doi: 10.1103/PhysRevLett.128.172501
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2022WU07      Phys.Rev. C 105, L031303 (2022)

X.H.Wu, Z.X.Ren, P.W.Zhao

Nuclear energy density functionals from machine learning

NUCLEAR STRUCTURE 4He, 16O, 40Ca; calculated rms radii, total energies, kinetic energies, ground-state densities. Self-consistent Kohn-Sham and machine-learning approaches. Comparison to available experimental data.

doi: 10.1103/PhysRevC.105.L031303
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2022ZH06      Phys.Rev. C 105, 024322 (2022)

D.D.Zhang, Z.X.Ren, P.W.Zhao, D.Vretenar, T.Niksic, J.Meng

Effects of rotation and valence nucleons in molecular α-chain nuclei

NUCLEAR STRUCTURE 12,16C, 16Ne; calculated Routhians, proton and neutron density distributions, location of the peak and the width of α-like cluster in the nuclei. 16C, 16Ne, 20O, 20Mg; calculated angular momentaand quadrupole deformation as functions of rotational frequency. 3D lattice Cranking covariant density functional theory (CDFT) calculations.

doi: 10.1103/PhysRevC.105.024322
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2021RA31      Phys.Rev. C 104, 064316 (2021)

S.Rajbanshi, R.Palit, R.Raut, Y.Y.Wang, Z.X.Ren, J.Meng, Q.B.Chen, S.Ali, H.Pai, F.S.Babra, R.Banik, S.Bhattacharya, S.Bhattacharyya, P.Dey, S.Malik, G.Mukherjee, Md.S.R.Laskar, S.Nandi, R.Santra, T.Trivedi, S.S.Ghugre, A.Goswami

Evidence of octupole correlation in 79Se

NUCLEAR REACTIONS 76Ge(9Be, 2nα)79Se, E≈31 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(θ)(ADO ratios), γγ(linear polarization), T1/2 of levels by DSAM using INGA array of 14 Compton-suppressed clover detectors at the TIFR Pelletron Linac Facility. 79Se; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, B(M1), B(E2), B(E1)/B(E2) ratios, intrinsic dipole moments, octupole correlation; calculated potential energy surface in (β20, β30) plane based on the covariant density functional theory. Comparison of measured transition probabilities with reflection asymmetric triaxial particle rotor model (RAT-PRM) calculations.

doi: 10.1103/PhysRevC.104.064316
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Data from this article have been entered in the XUNDL database. For more information, click here.

2020LI41      Phys.Rev. C 102, 044307 (2020)

B.Li, Z.X.Ren, P.W.Zhao

Efficient solution for the Dirac equation in 3D lattice space with the conjugate gradient method

NUCLEAR STRUCTURE 48Ca; calculated total density of the lowest 28 levels in the spherical Woods-Saxon potential as a function of the radial coordinate using the conjugate gradient method with a filtering function (PCG-F) for solving iteratively the Dirac equation in three-dimensional (3D) lattice space for nuclear systems.

doi: 10.1103/PhysRevC.102.044307
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2020RE02      Nucl.Phys. A996, 121696 (2020)

Z.X.Ren, P.W.Zhao, S.Q.Zhang, J.Meng

Toroidal states in 28Si with covariant density functional theory in 3D lattice space

doi: 10.1016/j.nuclphysa.2020.121696
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2020RE10      Phys.Rev. C 102, 021301 (2020)

Z.X.Ren, P.W.Zhao

Toward a bridge between relativistic and nonrelativistic density functional theories for nuclei

NUCLEAR STRUCTURE 208Pb; calculated total energy, total vector and scalar densities, rms radius, single-particle spectrum for neutrons. 16O, 40,48Ca, 100,120,132Sn, 208Pb; calculated total energies per particle, traces of scalar densities per particle, and rms radii. Nonrelativistic reduction of the self-consistent covariant density functional theory (CDFT), with the similarity renormalization group (SRG) method.

doi: 10.1103/PhysRevC.102.021301
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2020RE13      Phys.Rev. C 102, 044603 (2020)

Z.X.Ren, P.W.Zhao, J.Meng

Time-dependent covariant density functional theory in three-dimensional lattice space: Benchmark calculation for the 16O + 16O reaction

NUCLEAR REACTIONS 16O(16O, X), E(cm)=50, 5-200 MeV; calculated collective kinetic energy of a boosted 16O, relative momentum, energy and particle number deviations for E(cm)=50 MeV, time evolution of total energy and quadrupole deformation β20 for E(cm)=50 MeV, energy dissipation as a function of beam energy for E(cm)=80-200 MeV, density distribution contours of the separating ions at E(cm)=90, 130, 170 MeV, total density evolutions for E(cm)=26.7, 26.8 MeV, above-barrier fusion σ(E) for E(cm)=5-40 MeV. Time-dependent covariant density functional theory (CDFT) with density functional PC-PK1. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.044603
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2019CA04      Phys.Rev. C 99, 014606 (2019)

X.G.Cao, E.J.Kim, K.Schmidt, K.Hagel, M.Barbui, J.Gauthier, S.Wuenschel, G.Giuliani, M.R.D.Rodriguez, S.Kowalski, H.Zheng, M.Huang, A.Bonasera, R.Wada, N.Blando, G.Q.Zhang, C.Y.Wong, A.Staszczak, Z.X.Ren, Y.K.Wang, S.Q.Zhang, J.Meng, J.B.Natowitz

Examination of evidence for resonances at high excitation energy in the 7 α disassembly of 28Si

NUCLEAR REACTIONS 12C(28Si, X), (28Si, 7α), E=35 MeV/nucleon; measured Eα, Iα, excitation functions for the α-conjugate exit channels using the 4π NIMROD-ISiS array for charged particle detection at the K500 superconducting cyclotron facility of Texas A and M. 28Si; deduced resonances at high excitation energies, shapes of 7α events in the de-excitation of projectile-like nuclei; calculated energies, J, π, configurations, quadrupole deformation of toroidal high-spin isomers using covariant functional PC-PK1 and DD-ME2.

doi: 10.1103/PhysRevC.99.014606
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2019RE09      Phys.Rev. C 100, 044322 (2019)

Z.X.Ren, P.W.Zhao

Hamiltonian flow equations for a Dirac particle in large scalar and vector potentials

NUCLEAR STRUCTURE 208Pb; calculated total density of the lowest 126 levels as a function of the radial coordinate using SRG method through a novel expansion with the inverse of the Dirac effective mass, and compared with exact results.

doi: 10.1103/PhysRevC.100.044322
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2018PE07      Phys.Rev. C 97, 041304 (2018)

C.M.Petrache, B.F.Lv, A.Astier, E.Dupont, Y.K.Wang, S.Q.Zhang, P.W.Zhao, Z.X.Ren, J.Meng, P.T.Greenlees, H.Badran, D.M.Cox, T.Grahn, R.Julin, S.Juutinen, J.Konki, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, B.Cederwall, O.Aktas, A.Ertoprak, H.Liu, S.Matta, P.Subramaniam, S.Guo, M.L.Liu, X.H.Zhou, K.L.Wang, I.Kuti, J.Timar, A.Tucholski, J.Srebrny, C.Andreoiu

Evidence of chiral bands in even-even nuclei

NUCLEAR REACTIONS 100Mo(40Ar, 4n), E=152 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using JUROGAM II array at the K130 Cyclotron facility of the University of Jyvaskyla. 136Nd; deduced high-spin levels, J, π, bands, five pairs of nearly degenerate chiral doublet bands, B(M1)/B(E2), configurations, quasiparticle alignments. Comparison with theoretical calculations using three-dimensional tilted axis cranking covariant density functional theory (3D TAC-CDFT), TAC-CDFT, and multi-quasiparticle particle-rotor model (MQ-PRM). Complete level scheme and bands to appear in a forthcoming paper.

doi: 10.1103/PhysRevC.97.041304
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Data from this article have been entered in the XUNDL database. For more information, click here.

2017RE02      Phys.Rev. C 95, 024313 (2017)

Z.X.Ren, S.Q.Zhang, J.Meng

Solving Dirac equations on a 3D lattice with inverse Hamiltonian and spectral methods

doi: 10.1103/PhysRevC.95.024313
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