A5069960476- Nuclear physics research studies
- Atomic and Molecular Physics
- Quantum Chromodynamics and Particle Interactions
- Astronomical and nuclear sciences
- Advanced NMR Techniques and Applications
- Advanced Chemical Physics Studies
- Superconducting Materials and Applications
- Rare-earth and actinide compounds
- Astro and Planetary Science
- Nuclear Physics and Applications
- Crystallization and Solubility Studies
- High-pressure geophysics and materials
- Space exploration and regulation
- Mathematics and Applications
- Advanced Algebra and Geometry
- Particle physics theoretical and experimental studies
- X-ray Spectroscopy and Fluorescence Analysis
- Space Science and Extraterrestrial Life
- Molecular Spectroscopy and Structure
- Particle accelerators and beam dynamics
- X-ray Diffraction in Crystallography
- Analytic Number Theory Research
- Atomic and Subatomic Physics Research
- Planetary Science and Exploration
- Quantum chaos and dynamical systems
Beijing Normal University
2015-2025
Institute of Theoretical Physics
2016
Chinese Academy of Sciences
2016
State Key Laboratory of Nuclear Physics and Technology
2008
University of Aizu
2008
Peking University
2003-2008
Technical University of Munich
2008
The mass table in the deformed relativistic Hartree-Bogoliubov theory continuum (DRHBc) with PC-PK1 density functional has been established for even-$Z$ nuclei $8\le Z\le120$, extended from previous work even-even [Zhang $\it{et.~al.}$ (DRHBc Mass Table Collaboration), At. Data Nucl. Tables 144, 101488 (2022)]. calculated binding energies, two-nucleon and one-neutron separation root-mean-square (rms) radii of neutron, proton, matter, charge distributions, quadrupole deformations, neutron...
By adopting the deformed relativistic Hartree–Bogoliubov theory in continuum (DRHBc) with point-coupling density functional PC-PK1, we investigate shell structure evolution of even–even U, Pu, and Cm isotopic chains from proton drip line to neutron line. The Fermi energy λn, two-neutron separation S2n, gap δ2n, quadrupole deformation β2 all indicate major closures at N = 126, 184, 258. emergence sudden drops between U Pu energies λp around these is a consequence designation convention when...
Adiabatic and configuration-fixed constrained triaxial relativistic mean field (RMF) approaches are developed for the first time. A new phenomenon, existence of multiple chiral doublets (M\ensuremath{\chi}D), i.e., more than one pair doublet bands in single nucleus, is suggested $^{106}\mathrm{Rh}$ based on deformations their corresponding proton neutron configurations.
Covariant density functional theory and the tilted axis cranking method are used to investigate antimagnetic rotation (AMR) in nuclei for first time a fully self-consistent microscopic way. The experimental spectrum as well $B(E2)$ values of recently observed AMR band $^{105}\mathrm{Cd}$ reproduced very well. This gives further strong hint that is realized specific bands nuclei.
The self-consistent tilted axis cranking relativistic mean-field theory based on a point-coupling interaction has been established and applied to investigate systematically the newly observed shears bands in 60Ni. angles, deformation parameters, energy spectra, reduced M1 E2 transition probabilities have studied fully microscopic way for various configurations rotational frequencies. It is found competition between transitions from magnetic electric rotations be considered order reproduce...
The tilted axis cranking formalism is implemented in relativistic mean field (RMF) theory. It used for a microscopic description of magnetic rotation the framework covariant density functional We assume that rotational $\mathit{xz}$ plane and consider systems with two symmetries $\mathcal{P}$ (space reflection) ${\mathcal{P}}_{y}\mathcal{T}$ (a combination reflection $y$ direction time reversal). A computer code based on these developed, first applications are discussed nucleus...
Following a previous Letter [P. W. Zhao et al., Phys. Rev. Lett. 107, 122501 (2011)] on the first microscopic description of antimagnetic rotation (AMR) in ${}^{105}\mathrm{Cd}$, systematic investigation and detailed analysis for AMR band framework tilted-axis cranking (TAC) model based covariant density functional theory are carried out. After self-consistent TAC calculations performed with given functional, configuration observed ${}^{105}\mathrm{Cd}$ is obtained from single-particle...
The chiral doublets for nuclei in $A\ensuremath{\sim}100$ and $130$ regions have been studied with the particle-rotor model. experimental spectra of partner bands four $N=75$ isotones $A\ensuremath{\sim}130$ region well reproduced by calculation configuration $\ensuremath{\pi}{h}_{11∕2}\ensuremath{\bigotimes}\ensuremath{\nu}{h}_{11∕2}^{\ensuremath{-}1}$. possible predicted model $\ensuremath{\pi}{g}_{9∕2}\ensuremath{\bigotimes}\ensuremath{\nu}{g}_{9∕2}^{\ensuremath{-}1}$ based on analysis...
The deformation in rhodium isotopes is investigated using adiabatic and configuration-fixed constrained triaxial relativistic mean field (RMF) approaches. deformations are found the ground states of $^{102,104,106,108,110}\mathrm{Rh}$, which consistent with Skyrme Hartree-Fock calculations. Several minima $^{104,106,108,110}\mathrm{Rh}$ obtained by corresponding configurations characterized quantum numbers $|\mathit{nljm}\ensuremath{\rangle}$ transforming wave functions from a Cartesian...
The nature of the chiral candidate bands in $^{106}\mathrm{Ag}$, one only two known examples candidates which actually cross, is investigated experimentally and theoretically. Lifetimes have been determined for these $^{106}\mathrm{Ag}$ using Doppler-shift attenuation method with $\ensuremath{\gamma}$-detector array AFRODITE. level scheme has extended, three negative-parity observed to high spins. Configurations were assigned based on a quasiparticle alignment analysis configuration-fixed...
Abstract In order to explore the possible existence of nuclear chirality in A ≈ 60 mass region, doublet bands
 built on configuration π f−1
 7/2 ⊗νg1
 9/2 are studied using particle rotor model (PRM) with residual proton
neutron interactions Vpn for cobalt isotopes. The energy spectra E(I), difference between doublet
 bands ∆E(I), electromagnetic transition probabilities B(M1) and B(E2), staggering S(I) dou
blet calculated by varying...
The configuration-fixed constrained triaxial relativistic mean-field approach is extended by including time-odd fields and applied to the study of candidate multiple chiral doublets (M\ensuremath{\chi}D) nucleus $^{106}\mathrm{Rh}$. energy contribution from microscopical evaluation center-of-mass correction as well modification deformation parameters $\ensuremath{\beta},\ensuremath{\gamma}$ due are investigated. contributions total 0.1--0.3 MeV, they modify slightly values. However,...
Using the particle-rotor model (PRM), in which two quasiparticles are coupled to a triaxial core, negative-parity doublet bands $^{106}\mathrm{Rh}$ studied. The quadrupole deformations \ensuremath{\beta} and \ensuremath{\gamma} for $\ensuremath{\pi}{g}_{9/2}\ensuremath{\bigotimes}\ensuremath{\nu}{h}_{11/2}$ configuration calculated by configuration-fixed constrained relativistic mean-field (RMF) approaches, these self-consistent deformation parameters used as inputs PRM. present results well...
The structure of ${}^{58}$Fe was investigated at Gammasphere using ${}^{48}$Ca(${}^{13,14}$C,$x$$n$) fusion-evaporation reactions a beam energy 130 MeV. level scheme has been revised and extended to $J\ensuremath{\sim}17\ensuremath{\hbar}$ an excitation 16.6 Regular band structures consisting low-energy $\ensuremath{\Delta}J=1\ensuremath{\hbar}$ transitions have observed moderate spin ($J\ensuremath{\sim}8\ensuremath{\hbar}$--15$\ensuremath{\hbar}$) are candidates for magnetic rotational...
The self-consistent tilted axis cranking relativistic mean-field (TAC-RMF) theory based on a point-coupling interaction is applied to investigate the observed magnetic and antimagnetic rotations in nucleus $^{110}\mathrm{Cd}$. energy spectra, relation between spin rotational frequency, deformation parameters, reduced $M1$ $E2$ transition probabilities are studied with various configurations. It found that configuration has be changed reproduce spectra relations frequency for both bands....
A brief survey of results studies nuclear chirality in the mass 80 and 190 region at iThemba LABS is given, before looking case 106 Ag detail. Here, crossing a pair candidate chiral bands re-interpreted as prolate band by an aligned four-quasiparticle band.
High-spin structures in the neutron-rich $^{108}\mathrm{Tc}$ nucleus have been reinvestigated by measuring prompt $\ensuremath{\gamma}$-rays from spontaneous fission of $^{252}\mathrm{Cf}$. A previously known collective band has extended up to higher spin states and a new side identified. These doublet bands are proposed as pseudospin partner with configurations $\ensuremath{\pi}1/{2}^{+}[431]\ensuremath{\bigotimes}\ensuremath{\nu}[\stackrel{~}{312} 5/{2}^{+},3/{2}^{+}]$, which is first...
The nuclear multiple chirality in $A\sim60$ mass region is explored by the adiabatic and configuration-fixed constrained covariant density functional theory for cobalt isotopes. potential-energy curves triaxiality parameters $\gamma$ as functions of deformation parameter $\beta$ $^{54,56,57,58,59,60}$Co are obtained. It found that there high-$j$ particle(s) hole(s) configurations with prominent triaxially deformed shapes these This points towards existence or highly anticipated.
The open problem on whether or not the chirality exists in doublet bands M1 and M4 light-mass even-even nucleus $^{60}$Ni is studied by adopting recently developed fully quantal four-$j$ shells triaxial particle rotor model. corresponding experimental energy spectra, differences between bands, available $B(M1)/B(E2)$ values are successfully reproduced. analyses basis of angular momentum components, azimuthal plots, $K$-plots suggest that chiral modes exist at $I\geq 12\hbar$ M4.
The possibility of the existence octupole deformation in $^{151}\mathrm{Pm}$ has caused interest for about thirty years. In this paper, observed low-lying positive- and negative-parity structures are investigated by reflection-asymmetric triaxial particle rotor model. experimental energy spectra, staggering, parity splitting parameters well reproduced theoretical calculations. It is found that, although spectra can be without degree freedom, calculated $B(E1)$ values depend sensitively on...
High spin states in the odd–odd nucleus 122Cs have been studied by in-beam γ-ray spectroscopy with a 107Ag(19F,1p3n) fusion-evaporation reaction at beam energy of 85 MeV. A previously known πh11/2 ⊗ νh11/2 yrast band was confirmed and its I re-examined. ΔI = 2 identified, which together another forms side band. The two observed bands are proposed as pair chiral doublet based on systematic comparison those neighbouring Cs isotopes, well relativistic mean field triaxial particle-rotor-model...
The chirality suggested for the doublet bands B2 and B2a in $^{195}$Tl $A\sim190$ region is reexamined. potential-energy curves configurations together with deformation parameters are obtained by constrained covariant density functional theory. corresponding experimental energy spectra, differences between bands, available $B(M1)/B(E2)$ values investigated fully quantal particle rotor model. Analysis on basis of angular momentum components, $K$-plots, azimuthal plots suggest a planar...