Collective Flows of $^{16}$O+$^{16}$O Collisions with $\alpha$-Clustering Configurations
Chen-Chen Guo1 , Wan-Bing He2 , Yu-Gang Ma1,3,4**
1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002 Institute of Modern Physics, Fudan University, Shanghai 2004333 University of Chinese Academy of Sciences, Beijing 1000494 School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031
Abstract ：The main purpose of the present work is to discuss whether or not the collective flows in heavy-ion collision at the Fermi energy can be taken as a tool to investigate the cluster configuration in light nuclei. In practice, within an extended quantum molecular dynamics model, four $\alpha$-clustering (linear chain, kite, square and tetrahedron) configurations of $^{16}$O are employed in the initialization, $^{16}$O+$^{16}$O around the Fermi energy (40–60 MeV/nucleon) with impact parameter 1–3 fm are simulated, and the directed and elliptic flows are analyzed. It is found that collective flows are influenced by the different $\alpha$-clustering configurations, and the directed flow of free protons is more sensitive to the initial cluster configuration than the elliptic flow. Nuclear reaction at the Fermi energy can be taken as a useful way to study cluster configuration in light nuclei.
收稿日期: 2017-06-09
出版日期: 2017-08-15
:
21.65.Cd
(Asymmetric matter, neutron matter)
21.65.Mn
(Equations of state of nuclear matter)
25.70.-z
(Low and intermediate energy heavy-ion reactions)
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2017, Vol. 34 
