A5100390202- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- High-pressure geophysics and materials
- Pulsars and Gravitational Waves Research
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Quantum, superfluid, helium dynamics
- Gamma-ray bursts and supernovae
- Advanced NMR Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Particle Detector Development and Performance
- Statistical Methods and Bayesian Inference
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Astro and Planetary Science
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
- Stochastic processes and statistical mechanics
- Distributed and Parallel Computing Systems
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
Sun Yat-sen University
2019-2025
Xiangya Hospital Central South University
2025
Central South University
2025
Hunan Agricultural University
2024
Xinjiang Astronomical Observatory
2024
SLAC National Accelerator Laboratory
2024
China Institute of Atomic Energy
2022
University of South China
2022
Key Laboratory of Nuclear Radiation and Nuclear Energy Technology
2022
Zhongnan Hospital of Wuhan University
2021
Simulations by transport codes are indispensable to extract valuable physics information from heavy ion collisions. In order understand the origins of discrepancies between different widely used codes, we compare 15 such under controlled conditions a system confined box with periodic boundary, initialized Fermi-Dirac distributions at saturation density and temperatures either 0 or 5 MeV. calculations, one is able check separately ingredients code. this second publication code evaluation...
We compare ten transport codes for a system confined in box, aiming at improved handling of the production $\Delta$ resonances and pions, which is indispensable constraining high-density symmetry energy from observables such as $\pi^-/\pi^+$ yield ratio heavy-ion collisions. The box initialized with nucleons saturation density 60 MeV temperature. reactions $NN\leftrightarrow N\Delta$ $\Delta\leftrightarrow N\pi$ are implemented, but Pauli blocking mean-field potential deactivated present...
The neutron skin thickness $\Delta r_{\rm{np}}$ of heavy nuclei is essentially determined by the symmetry energy density slope $L({\rho })$ at $\rho_c = 0.11~{\rm {fm}^{-3}}\approx 2/3\rho_0$ ($\rho_0$ nuclear saturation density), roughly corresponding to average finite nuclei. PREX collaboration recently reported a model-independent extraction r^{208}_{\rm{np}} 0.283 \pm 0.071$ fm for $^{208}$Pb, suggesting rather stiff $E_{\rm{sym}}({\rho with $L({\rho_c }) \ge 52$ MeV. We show that cannot...
Using the recent model-independent determination of charge-weak form factor difference $\mathrm{\ensuremath{\Delta}}{F}_{\mathrm{CW}}$ in $^{48}\mathrm{Ca}$ and $^{208}\mathrm{Pb}$ by CREX PREX-2 collaborations together with some well-determined properties doubly magic nuclei, we perform Bayesian inference symmetry energy ${E}_{\mathrm{sym}}(\ensuremath{\rho})$ neutron skin thickness $\mathrm{\ensuremath{\Delta}}{r}_{\mathrm{np}}$ within Skyrme density functional (EDF). We find inferred...
It is currently a big challenge to accurately determine the symmetry energy $E_{\text{sym}}(\rho)$ and pure neutron matter equation of state $E_{\text{PNM}}(\rho)$, even their values around saturation density $\rho_0 $. We find that electric dipole polarizability $\alpha _ {\text{D}}$ in $^{208}$Pb can be determined uniquely by magnitude or almost equivalently $E_{\text{PNM}}(\rho)$ at subsaturation densities $\rho_0/3 $, shedding light upon genuine correlation between...
Within the transport model evaluation project (TMEP) of simulations for heavy-ion collisions, mean-field response is examined here. Specifically, zero-sound propagation considered neutron-proton symmetric matter enclosed in a periodic box, at zero temperature and around normal density. The results several codes belonging to two families (BUU-like QMD-like) are compared among each other exact calculations. For BUU-like codes, employing test particle method, depend on combination number...
In the past two decades, pions created in high density regions of heavy ion collisions have been predicted to be sensitive at densities symmetry energy term nuclear equation state, a property that is key our understanding neutron stars. new experiment designed study energy, multiplicities negatively and positively charged measured with accuracy for central 132Sn+124Sn, 112Sn+124Sn, 108Sn+112Sn E/A=270 MeV SπRIT Time Projection Chamber. While individual pion are 4% accuracy, those...
The data-driven Bayesian model averaging is a rigorous statistical approach to combining multiple models for unified prediction. Compared with the individual model, it provides more reliable information, especially problems involving apparent dependence. In this work, within both non-relativistic Skyrme energy density functional and nonlinear relativistic mean field effective proton-neutron chemical potential difference Δμpn⁎ of neutron-rich nuclei found be strongly sensitive symmetry...
Within the framework of relativistic Vlasov-Uehling-Uhlenbeck transport model based on nonlinear NL$\rho$ interaction, we study pion in-medium effects $\pi^-/\pi^+$ ratio in Au+Au collisions at energy $E/A=400~\mathrm{MeV}$. These include isospin-dependent s-wave and p-wave potentials, which are taken from calculations chiral perturbation theory $\Delta$-hole model, respectively. We find that this collision is suppressed by potential but enhanced potential, with a net effect significantly...
While the equation of state (EOS) symmetric nuclear matter (SNM) at suprasaturation densities has been relatively well constrained from heavy-ion collisions, EOS high-density neutron-rich is still largely uncertain due to poorly known behavior symmetry energy. Using constraints on SNM collisions together with data finite nuclei and existence $2\text{ }\text{ }{M}_{\ensuremath{\bigodot}}$ neutron stars electromagnetic observations, we show that energy cannot be too soft, which leads lower...
We develop a kinetic approach to the production of light nuclei up mass number $A\phantom{\rule{4pt}{0ex}}\ensuremath{\leqslant}\phantom{\rule{4pt}{0ex}}4$ in intermediate-energy heavy-ion collisions by including them as dynamic degrees freedom. The conversions between nucleons and during are incorporated dynamically via breakup nucleon their reverse reactions. also include Mott effect on nuclei; i.e., nucleus will no longer be bound if phase-space density its surrounding is too large. With...
Accelerator-based x-ray free-electron lasers (XFELs) are the latest addition to revolutionary tools of discovery for 21st century. The two major components an XFEL accelerator-produced electron beam and a magnetic undulator, which tend be kilometer-scale long expensive. A proof-of-principle demonstration lasing at 27 nm using beams from compact laser wakefield accelerators was shown recently by undulator. However, scaling these concepts wavelengths is far straightforward as requirements on...
Nuclear structure observables usually most effectively probe the properties of nuclear matter at subsaturation densities rather than saturation density. We demonstrate that electric dipole polarizibility ${\ensuremath{\alpha}}_{\text{D}}$ in $^{208}\mathrm{Pb}$ is sensitive to both magnitude ${E}_{\text{sym}}({\ensuremath{\rho}}_{\text{c}})$ and density slope $L({\ensuremath{\rho}}_{\text{c}})$ symmetry energy cross ${\ensuremath{\rho}}_{\text{c}}=0.11$ ${\mathrm{fm}}^{\ensuremath{-}3}$....
Recent progress in theory, experiment, and observation challenges the mean-field models by using conventional Skyrme interaction, suggesting that extension of interaction is necessary. In this work, fitting experimental data a number finite nuclei together with few additional constraints on nuclear matter simulated annealing method, we construct three parameter sets; namely, eMSL07, eMSL08, eMSL09, based an extended which includes momentum density-dependent two-body forces to effectively...
Based on mean field calculations with Skyrme interactions, we extract a constraint the isovector effective mass in nuclear matter at saturation density $\rho_0$, i.e., $m_{v}^{\ast}(\rho_0)=(0.77\pm0.03) m$ by combining experimental data of centroid energy giant dipole resonance (IVGDR) and electric polarizability $\alpha_{\mathrm{D}}$ $^{208}$Pb. Meanwhile, isoscalar $\rho_0$ is determined to be $m_{s}^{\ast}(\rho_0)=(0.91\pm0.05) analyzing measured excitation quadrupole (ISGQR) From...
Given an Equation of State (EOS) for neutron star (NS) matter, there is a unique mass-radius sequence characterized by maximum mass $M_{\rm{NS}}^{\max}$ at radius $R_{\max}$. We first show analytically that the and $R_{\max}$ scale linearly with two different combinations NS central pressure $P_{\rm{c}}$ energy density $\varepsilon_{\rm{c}}$ dissecting perturbatively dimensionless Tolman-Oppenheimer-Volkoff (TOV) equations governing internal variables. The scaling relations are then verified...
Within the Transport Model Evaluation Project (TMEP), we present a detailed study of performance different transport models in $\text{Sn}+\text{Sn}$ collisions at $270A\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$, which are representative reactions used to equation state suprasaturation densities. We put particular emphasis on production pions and $\mathrm{\ensuremath{\Delta}}$ resonances, have been as probes nuclear symmetry energy. In this paper, aim understand differences results codes for...
Primary aldosteronism (PA) is the most common endocrine cause of hypertension. The plasma aldosterone-to-renin ratio (ARR) recommended screening tool for PA, but previous studies showed controversy regarding influence age on ARR. aim study was to evaluate impact ARR measured using direct renin concentration (DRC) and its diagnostic value in patients with PA. We retrospectively collected hypertension who attended Xiangya Hospital PA aldosterone (PAC)/DRC from January 1, 2017 November 2023....
Using the AMPT + MUSIC+UrQMD hybrid model, we study global and local spin polarizations of $\Lambda$ hyperons as functions freeze-out temperature degree freedom in hadronic phase Au+Au collisions at $\sqrt{s_{NN}}=19.6$ GeV. Including contributions from both thermal vorticity shear matter, find that, with dropping hadronization 160 MeV to 110 kinetic freeze-out, due decrease by a factor two, while those quickly become negligibly small 140 MeV. Our results suggest importance understanding...
The central speed of sound (SS) measures the stiffness equation state (EOS) superdense neutron star (NS) matter. Its variations with density and radial coordinate in NSs conventional analyses often suffer from uncertainties specific nuclear EOS used. Using SS NS mass/radius scaling obtained solving perturbatively scaled Tolman-Oppenheimer-Volkoff (TOV) equations, we study SS, trace anomaly several closely related properties an EOS-model-independent manner. We find that increases reduced...
We construct a new Skyrme interaction Skχm⁎ by fitting the equation of state and nucleon effective masses in asymmetric nuclear matter from chiral two- three-body forces as well binding energies finite nuclei. Employing this to study electric dipole polarizabilities 48Ca, 68Ni, 120Sn, 208Pb random-phase approximation, we find that theoretical predictions are good agreement with experimentally measured values without additional fine tuning interaction, thus confirming usefulness studying...