The proton and neutron distributions in Na isotopes: The development of halo and shell structure
The proton and neutron distributions in Na isotopes: The development of halo and shell structure
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DOI：
10.1016/s0370-2693(97)01386-5
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发表时间：
1998-01
影响因子：
4.4
通讯作者：
J. Meng;I. Tanihata;S. Yamaji
中科院分区：
文献类型：
--
作者：
J. Meng;I. Tanihata;S. Yamaji
用Glauber模型计算了ANa +~（12）C反应的相互作用截面。本文将连续谱Hartree-Bogoliubov理论推广到奇粒子系统，并考虑了连续谱。这个理论很好地再现了实验结果。本文系统地研究了钠同位素从质子滴线到中子滴线的物质分布。研究了壳层效应与晕的关系。物质分布的尾部表现出对壳层结构的强烈依赖性。由于2 p ~（3/2）和2 p ~（1/2）的下降，N=28的中子闭合壳层未能出现。晕的发展被理解为在下一个壳层或接近连续极限的子壳层中占据的变化。中心质子密度在中子滴线附近逐渐减小，这是由于质子-中子相互作用的结果。然而，质子密度的扩散性对于整个Na同位素没有改变。
The interaction cross sections forANa +12C reaction are calculated using Glauber model. The continuum Hartree-Bogoliubov theory has been generalized to treat the odd particle system and take the continuum into account. The theory reproduces the experimental result quite well. The matter distributions from the proton drip line to the neutron drip line in Na isotopes have been systematically studied and presented. The relation between the shell effects and the halos has been examined. The tail of the matter distribution shows a strong dependence on the shell structure. The neutron N=28 closure shell fails to appear due to the coming down of the 2p3/2and 2p1/2. The development of the halo was understood as changes in the occupation in the next shell or the sub-shell close to the continuum limit. The central proton density is found to be decreasing near the neutron drip line, which is due to the proton-neutron interaction. However the diffuseness of the proton density does not change for the whole Na isotopes.