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The effects of the symmetry potential and the isospin dependent in-medium nucleon-nucleon (NN) cross section on the number of proton(neutron) emissions N$_p(N_n$) are studied respectively within an isospin-dependent quantum molecular…

核理论 · 物理学 2009-11-07 Jian-Ye Liu , Wen-Jun Guo , Yong-Zhong Xing , Wei Zuo , Xi-Guo Lee , Zeng-Hua Li

Recent progress of the quantum molecular dynamics model for describing the dynamics of heavy-ion collisions is viewed, in particular the nuclear fragmentation, isospin physics, particle production and in-medium effect, hadron-induced…

核理论 · 物理学 2018-03-01 Zhao-Qing Feng

Based on an isospin dependent quantum molecular dynamics model we studied the influence of a medium correction of an isospin dependent nucleon nucleon cross section on the fragmentation at the intermediate energy heavy ion collisions. We…

核理论 · 物理学 2009-11-10 Jian-Ye Liu , Yong-Zhong Xing , Wen-Jun Guo

Isoscaling is found to hold for fragment yields in the antisymmetrized molecular dynamics (AMD) simulations for collisions of calcium isotopes at 35 MeV/nucleon. This suggests the applicability of statistical considerations to the dynamical…

核理论 · 物理学 2008-11-26 Akira Ono , P. Danielewicz , W. A. Friedman , W. G. Lynch , M. B. Tsang

We present a complete systematics (excitation function, impact parameter, system size, isospin asymmetry, and equations of state dependences) of global stopping and fragment production for heavy-ion reactions in the energy range between 50…

核理论 · 物理学 2010-11-02 Sanjeev Kumar , Suneel Kumar , Rajeev K. Puri

Using a more reasonable separate density-dependent scenario instead of the total density-dependent scenario for in-medium $nn$, $pp$ and $np$ interactions, we examine effects of differences of in-medium nucleon-nucleon interactions in two…

核理论 · 物理学 2020-08-24 Gao-Feng Wei , Chang Xu , Wei Xie , Qi-Jun Zhi , Shi-Guo Chen , Zheng-Wen Long

Using an isospin-dependent transport model, we study isospin effects on two-nucleon correlation functions in heavy-ion collisions induced by neutron-rich nuclei at intermediate energies. We find that these correlation functions are…

核理论 · 物理学 2009-11-10 Lie-Wen Chen , V. Greco , C. M. Ko , Bao-An Li

The effect of the density dependence of symmetry energy on fragmentation is studied using isospin-dependent quantum molecular dynamics model(IQMD) Model. We have used the reduced isospin-dependent cross-section with soft equation of state…

核理论 · 物理学 2015-05-28 Karan Singh Vinayak , Suneel Kumar

Using the quantum molecular dynamics model, we study the role of mass asymmetry of colliding nuclei on the fragmentation at the balance energy and on its mass dependence. The study is done by keeping the total mass of the system fixed as…

核理论 · 物理学 2015-05-28 Supriya Goyal

The influence of medium correction from an isospin dependent nucleon nucleon cross section on the fragmentation and nucleon emission in the intermediate energy heavy ion collisions was studied by using an isospin dependent quantum molecular…

核理论 · 物理学 2009-11-10 Yong-Zhong Xing , Jian-Ye Liu , Wen-Jun Guo

Reaction cross-sections are calculated using the Coulomb modified Glauber model for deformed target nuclei. The deformed nuclear matter density of the target is expanded into multipoles of order k = 0,2,4.The reaction cross-sections between…

核理论 · 物理学 2009-04-13 M. Y. M. Hassan , M. Y. H. Farag , A. Y. Abul-Magd , T. E. I. Nassar

After reviewing our microscopic approach to nuclear and neutron-rich matter, we focus on how nucleon-nucleon scattering is impacted by the presence of a dense hadronic medium, with special emphasis on the case where neutron and proton…

核理论 · 物理学 2015-06-16 Francesca Sammarruca

The elliptical flow of fragments is studied for different systems at incident energies between 50 and 1000 MeV/nucleon using the isospin-dependent quantum molecular dynamics (IQMD) model. Our findings reveal that elliptical flow shows a…

核理论 · 物理学 2010-11-02 Sanjeev Kumar , Suneel Kumar , Rajeev K. Puri

In the simulation of intermediate energy heavy ion collisions by using the isospin dependent quantum molecular dynamics, the isospin effect on the process of multifragmentation and dissipation has been studied. It is found that the…

核理论 · 物理学 2009-11-07 Jian-Ye Liu , Yan-Fang Yang , Wei Zuo , Shun-Jin Wang , Qiang Zhao , Wen-Jun Guo , Bo Chen

Nuclear stopping in heavy ion collisions (HIC) has been studied by means of rapidity distribution and asymmetry of nucleon momentum distribution. It is an important quantity in determining the outcome of a reaction. Fen Fu {\it et al.,}…

核理论 · 物理学 2011-12-15 Anupriya Jain , Suneel Kumar

A Skyrme-type momentum-dependent nucleon-nucleon force distinguishing isospin effect is parameterized and further implemented in the Lanzhou Quantum Molecular Dynamics (LQMD) model for the first time, which leads to a splitting of nucleon…

核理论 · 物理学 2011-09-02 Zhao-Qing Feng

Based on the isospin-dependent quantum molecular dynamics model along with the GEMINI model, heavy-ion collisions at intermediate energies are studied. We calculate the production cross sections of different fragments for reactions of…

核理论 · 物理学 2015-03-30 Donghong Zhang , Wenjie Xie , Jun Su , Fengshou Zhang

We explore the influence of in-medium nucleon-nucleon cross section, symmetry potential and impact parameter on isospin sensitive observables in intermediate-energy heavy-ion collisions with the ImQMD05 code, a modified version of Quantum…

Using the isospin dependent quantum molecular dynamics model, we study the effect of charge asymmetry and isospin dependent cross-section on different aspects of elliptical flow. Simulations have been carried out for the reactions of…

核理论 · 物理学 2015-05-30 Anupriya Jain , Suneel Kumar , Rajeev K. Puri

The present thesis deals with the theoretical study of multi-fragmentation and its related phenomena's like directed transverse flow, rapidity distribution, elliptical flow and nuclear stopping in intermediate energy heavy-ion collisions…

核理论 · 物理学 2011-12-14 Varinderjit Kaur