Core-excitation three-cluster model description of 8He and 10He

被引：5
|
作者：
Kamada, H. [1 ]
Yamaguchi, M. [2 ]
Uzu, E. [3 ]
机构：
[1] Kyushu Inst Technol, Fac Engn, Dept Phys, Kitakyushu, Fukuoka 8048550, Japan
[2] Osaka Univ, Nucl Phys Res Ctr, Ibaraki 5670047, Japan
[3] Tokyo Univ Sci, Fac Engn Div 2, Shinjuku Ku, Tokyo 1628601, Japan
来源：
PHYSICAL REVIEW C | 2013年 / 88卷 / 01期
关键词：
ENERGY-LEVELS;
D O I：
10.1103/PhysRevC.88.014005
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We introduce a new model applying to the core-nucleus and two-neutron system. The Faddeev equations of He-6-n-n and He-8-n-n systems for He-8 and He-10 are solved, respectively. The potential of the subsystem in the model has been determined to make a coupling both of the ground state and the excited one inside the core nucleus. By a similar mechanism the three-nucleon system is solved with the three-body force originating from an isobar excitation of the nucleon. Inputting only the information of subsystem energy levels and widths we get the coupling constants of rank 1 Yamaguchi potential between the core nucleus and neutron. We calculate the Faddeev three-cluster equations to obtain the low-lying energy levels of He-8 and He-10. The 1(-) state of He-10, which has not been detected yet in experiments, is located in the energy level between the 0(+) and 2(+) states.
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页数：6
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