Quasi-free scattering with 6,8He beams
Quasi-free scattering with 6,8He beams
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DOI：
10.1016/j.nuclphysa.2005.05.148
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发表时间：
2005-09-05
影响因子：
1.4
通讯作者：
Yatsoura, VI
中科院分区：
文献类型：
--
作者：
Chulkov, LV;Aksouh, F;Yatsoura, VI
本文介绍了相对论He-6和He-8束轰击氢靶的（p，pn），（p，p α）和（p，p He-6）反应的实验研究结果。利用准自由散射过程和逆运动学的独特性质，获得了极丰中子核的结构信息。首次测量了He-6和He-8内部复杂团簇的动量分布。从实验数据推导出价中子、α-和He-6团簇的光谱因子。这些结果表明，填充p 1/2壳层是He-8结构的基本特征。结果表明，8He团簇结构可以看作是一个He-6核加两个价中子。(c)2005 Elsevier B. V.保留所有权利。
This paper presents the results of experimental investigations of (p, pn), (p, p alpha) and (p, p He-6) reactions with relativistic He-6 and He-8 beams impinging on a hydrogen target. Information on the structure of extremely neutron-rich nuclei was obtained by using the unique characteristic of quasi-free scattering processes and inverse kinematics. For the first time, momentum distributions of complex clusters inside He-6 and He-8 were measured. Spectroscopic factors for valence neutrons, alpha- and He-6 clusters were deduced from the experimental data. They demonstrate that the filling of the p 1/2 shell is the essential feature of the He-8 structure. It is shown that the 8He cluster structure can be considered as a He-6 core plus two valence neutrons. (c) 2005 Elsevier B.V. All rights reserved.