中国物理B ›› 2008, Vol. 17 ›› Issue (4): 1216-1222.doi: 10.1088/1674-1056/17/4/011
方德清1, 马余刚1, 蔡翔舟1, 郭威1, 田文栋1, 王宏伟1, 马春旺2, 傅瑶2
Ma Chun-Wang(马春旺)a)b), Fu Yao(傅瑶)a)b), Fang De-Qing(方德清)a)†,Ma Yu-Gang(马余刚)a), Cai Xiang-Zhou(蔡翔舟)a), Guo Wei(郭威)a),Tian Wen-Dong(田文栋)a), and Wang Hong-Wei(王宏伟)a)
摘要: The dependence between neutron skin thickness and neutron abrasion cross section ($\sigma_{\rm nabr}$) for neutron-rich nuclei is investigated within the framework of the statistical abrasion ablation model. Assuming that the density distributions for proton and neutron are of Fermi-type, and adjusting the diffuseness parameter of neutron density distribution in the droplet model, we find out the good linear correlation between the neutron skin thickness and the abrasion cross section $\sigma_{\rm nabr}$ for neutron-rich nuclei. The uncertainty of neutron skin thickness determined from $\sigma_{\rm nabr}$ is very small. It is suggested that $\sigma_{\rm nabr}$ can be used as a new experimental observable to extract the neutron skin thickness for neutron-rich nucleus. The scaling behaviours between neutron skin thickness and $\sigma_{\rm nabr}$, separately, for isotopes of $^{26-35}$Na, $^{44-56}$Ar, $^{48-60}$Ca, $^{67-78}$Ni are also investigated.
中图分类号: (Collective models)