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arXiv · 2408.00974

New insight into the N/Z and mass equilibration in heavy-ion collisions

Yu Yang·Zehong Liao·Zepeng Gao·Long Zhu·Jun Su·Cheng Li
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Abstract

The dynamics of N/Z and mass equilibration are investigated in the reactions 112,124Sn + 239Pu by employing the isospin-dependent quantum molecular dynamics model. It is found that N/Z and mass equilibration take place at different collision stages. The N/Z relaxation is observed in the approaching phase (from first contact to deepest contact) with a very short time, whereas interestingly we find for the first time that mass equilibration only takes place in the separation phase (from the deepest contact to re-separation), which are explained by investigating the dynamical asymmetry between the approaching and separation phases. The mass equilibration also could be clarified with a dynamical potential energy surface. Our results provide a new insight into the equilibration dynamics of the quantum systems.

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Yu Yang, Zehong Liao, Zepeng Gao, Long Zhu, Jun Su, Cheng Li. 2024-08-02. New insight into the N/Z and mass equilibration in heavy-ion collisions. https://arxiv.org/abs/2408.00974

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