Mixing of di-neutron components in 8He

被引：27

作者：

Itagaki, N. ^{[1
]}

Ito, M. ^{[2
]}

Arai, K. ^{[3
]}

Aoyama, S. ^{[4
]}

Kokalova, Tz. ^{[5
]}

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[2] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[3] Nagaoka Natl Coll Technol, Div Gen Educ, Niigata 9408532, Japan

[4] Niigata Univ, Integrated Informat Proc Ctr, Niigata 9502181, Japan

[5] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

PHYSICAL REVIEW C | 2008年 / 78卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.78.017306

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：

The mixing of di-neutron components in He-8 is studied. The ground state of He-8 corresponds to the sub-closed-shell configuration of the spin-orbit favored orbits (p(3/2)) for the neutrons, and the shell-model-like configuration is considered to be dominant. However, He-8 is a drip-line nucleus with a two-neutron separation energy of 2.1 MeV, and the di-neutron configuration, which is a characteristic feature of the weakly bound systems, mixes in the ground state. The motion of four neutrons around the He-4 core is solved by superposing the wave functions of antisymmetrized molecular dynamics. The mixing of di-neutron configurations is estimated by coupling the THSR (Tohsaki-Horiuchi-Schuck-Ropke) wave function, which successfully describes the alpha-condensed state of light nuclei.

引用

页数：4

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