Dynamical and statistical description of multifragmentation in heavy-ion collisions

Lihua Mao (毛莉花), Ning Wang (王宁), and Li Ou (欧立)
Phys. Rev. C 91, 044604 – Published 7 April 2015

Abstract

To explore the roles of the dynamical model and statistical model in the description of multifragmentation in heavy-ion collisions at intermediate energies, the fragments charge distributions of Au197+Au197 at 35 MeV/u are analyzed by using the hybrid model of improved quantum molecular dynamics (ImQMD) model plus the statistical model GEMINI. We find that, the ImQMD model can well describe the charge distributions of fragments produced in central and semicentral collisions. But for the peripheral collisions of Au+Au at 35 MeV/u, the statistical model is required at the end of the ImQMD simulations for the better description of the charge distribution of fragments. By using the hybrid model of ImQMD+GEMINI, the fragment charge distribution of Au+Au at 35 MeV/u can be reproduced reasonably well. The time evolution of the excitation energies of primary fragments is simultaneously investigated.

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  • Received 7 February 2015

DOI:https://doi.org/10.1103/PhysRevC.91.044604

©2015 American Physical Society

Authors & Affiliations

Lihua Mao (毛莉花)1, Ning Wang (王宁)1,2,*, and Li Ou (欧立)1,2,†

  • 1College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
  • 2State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China

  • *wangning@gxnu.edu.cn
  • liou@gxnu.edu.cn

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Vol. 91, Iss. 4 — April 2015

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