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By involving the constraints of the slope of nuclear symmetry energy $L$ into the question of determination of the high-density symmetry energy, one needs to probe the curvature of nuclear symmetry energy $K_{\rm{sym}}$. Based on the…

Nuclear Theory · Physics 2019-07-30 Ya-Fei Guo , Gao-Chan Yong

We have studied the isoscalar giant quadruple resonance (ISGQR) and the isovector giant dipole resonance (IVGDR) in $^{208}$Pb based on an improved isospin-dependent Boltzmann-Uehling-Uhlenbeck transport approach using an improved isospin-…

Nuclear Theory · Physics 2020-08-07 Jun Xu , Wen-Tao Qin

The density dependence of the nuclear symmetry energy is inspected using the Statistical Multifragmentation Model with Skyrme effective interactions. The model consistently considers the expansion of the fragments' volumes at finite…

Nuclear Theory · Physics 2009-10-29 S. R. Souza , M. B. Tsang , B. V. Carlson , R. Donangelo , W. G. Lynch , A. W. Steiner

Features of particle emission and critical point behavior are investigated as functions of the isospin of disassembling sources and temperature at a moderate freeze-out density for medium-size Xe isotopes in the framework of isospin…

Nuclear Theory · Physics 2009-11-06 Y. G. Ma , Q. M. Su , W. Q. Shen , D. D. Han , J. S. Wang , X. Z. Cai , D. Q. Fang , H. Y. Zhang

Based on the ultrarelativistic quantum molecular dynamics (UrQMD) model, the effects of the density-dependent symmetry potential for baryons and of the Coulomb potential for produced mesons are investigated for neutron-rich heavy ion…

Nuclear Theory · Physics 2009-11-11 Q. Li , Z. X. Li , S. Soff , Raj K. Gupta , M. Bleicher , H. Stoecker

Collisions involving 112Sn and 124Sn nuclei have been simulated with the improved Quantum Molecular Dynamics transport model. The results of the calculations reproduce isospin diffusion data from two different observables and the ratios of…

Nuclear Experiment · Physics 2014-11-18 M. B. Tsang , Yingxun Zhang , P. Danielewicz , M. Famiano , Zhuxia Li , W. G. Lynch , A. W. Steiner

The elliptic flow for $Z\le2$ particles in heavy ion collisions at energies from several tens to several hundreds MeV per nucleon is investigated by means of transport model,i.e. a new version of the Improved Quantum Molecular Dynamics…

Nuclear Theory · Physics 2009-11-11 Yingxun Zhang , Zhuxia Li

The effect of $\delta-$ and $\omega-\rho-$meson cross couplings on asymmetry nuclear systems are analyzed in the frame-work of an effective Field theory motivated relativistic mean field formalism. The calculations are done on top of the G2…

Nuclear Theory · Physics 2015-06-17 Shailesh K. Singh , S. K. Biswal , M. Bhuyan , S. K. Patra

To explore the strength, isospin dependence, and density dependence of the in-medium spin-orbit coupling that is poorly known but relevant for understanding the structure of rare isotopes, the nucleon spin up-down differential transverse…

Nuclear Theory · Physics 2014-06-19 Yin Xia , Jun Xu , Bao-An Li , Wen-Qing Shen

The isospin diffusion of the quasi-projectile formed in the $^{64,58}Ni$ on $^{64,58}Ni$ reactions in the Fermi energy domain is investigated in the framework of the Boltzmann-Uehling-Uhlenbeck transport model. The well known isospin…

Nuclear Theory · Physics 2020-10-28 S. Mallik , F. Gulminelli

Within the framework of the improved quantum molecular dynamics model, the medium modifications on the free nucleon-nucleon elastic cross sections are investigated. By using various in-medium nucleon-nucleon elastic cross sections in the…

Nuclear Theory · Physics 2020-01-24 Li Ou , Xueying He

To understand the role of isospin effects on fragmentation due to the collisions of charge asymmetric nuclei, we have performed a complete systematical study using isospin dependent quantum molecular dynamics model. Here simulations have…

Nuclear Theory · Physics 2015-05-30 Anupriya Jain , Suneel Kumar

Taking into account more accurately the isospin dependence of nucleon-nucleon interactions in the in-medium many-body force term of the Gogny effective interaction, new expressions for the single nucleon potential and the symmetry energy…

Nuclear Theory · Physics 2010-04-14 Chang Xu , Bao-An Li

We study the influence of the isovector-scalar meson on the spinodal instabilities and the distillation effect in asymmetric non-homogenous nuclear matter under strong magnetic fields, of the order of $10^{18}-10^{19}$ G. Relativistic…

Nuclear Theory · Physics 2009-09-11 A. Rabhi , C. Providencia , J. Da Providencia

Analyses of high energy elastic pp and $\bar pp$ scattering data from CERN ISR and SPS Collider seem to provide strong evidence in favor of the gauged nonlinear sigma-model of the nucleon. This model describes the nucleon as a topological…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. M. Islam

To facilitate the relativistic heavy-ion calculations based on transport equations, the binary collisions involving a $\Delta$ resonance in either the entrance channel or the exit channel are investigated within a Hamiltonian formulation of…

Nuclear Theory · Physics 2008-11-26 T. -S. H. Lee

The liquid-gas phase transition in hot neutron-rich nuclear matter is investigated within a self-consistent thermal model using an isospin and momentum dependent interaction (MDI) constrained by the isospin diffusion data in heavy-ion…

Nuclear Theory · Physics 2008-11-26 Jun Xu , Lie-Wen Chen , Bao-An Li , Hong-Ru Ma

A key question in the physics of unstable nuclei is the knowledge of the $EOS$ for asymmetric nuclear matter ($ANM$) away from normal conditions. We recall that the symmetry energy at low densities has important effects on the neutron skin…

Nuclear Theory · Physics 2017-08-23 M. Di Toro

The squeeze-out flow in reactions of $^{124}$Sn + $^{124}$Sn and $^{124}$Ba + $^{124}$Ba at different incident energies for different impact parameters is investigated by means of an isospin-dependent quantum molecular dynamics model. For…

Nuclear Theory · Physics 2009-11-06 Feng-Shou Zhang , Lie-Wen Chen , Zhi-Yuan Zhu

The isospin-dependent component of the effective nucleon-nucleon interaction that causes the $\Delta T=1$ (p, p') and (p, n) reactions off nuclei is studied. It is shown that the corrections to the impulse approximation comes from the…

Nuclear Theory · Physics 2008-11-26 Taksu Cheon , Kazuo Takayanagi