NEUTRON HALO EFFECT ON DIRECT NEUTRON-CAPTURE AND PHOTODISINTEGRATION

被引：73

作者：

OTSUKA, T ^{[1
]}

ISHIHARA, M ^{[1
]}

FUKUNISHI, N ^{[1
]}

NAKAMURA, T ^{[1
]}

YOKOYAMA, M ^{[1
]}

机构：

[1] RIKEN, WAKO, SAITAMA 35101, JAPAN

来源：

PHYSICAL REVIEW C | 1994年 / 49卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.49.R2289

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：

A novel effect of the neutron halo formation is presented for the direct radiative neutron capture where a p-wave neutron is captured into an s orbit with neutron halo by emitting an E1 gamma ray. As an example, an enormous enhancement is demonstrated for the cross section of C-12(n,gamma)C-13(1/2+) at low energy in excellent agreement with a recent experiment. The S factor of the final state is evaluated. The inverse process, i.e., photodisintegration is discussed for an example of Be-11. A sharp but nonresonant peak near the threshold is obtained as a result of the neutron halo in its anomalous ground state.

引用

页码：R2289 / R2292

页数：4

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