PROPERTIES OF 3.39-MEV STATE IN B12

被引：13

作者：

MOORING, FP

MONAHAN, JE

机构：

[1] Argonne National Laboratory, Argonne

[2] Northwestern University, Evanston

来源：

PHYSICAL REVIEW | 1969年 / 178卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRev.178.1612

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 3.39-MeV state in B12 has been studied in the B11+n system, where the state appears as a resonance at a (lab) neutron energy of 20.8±0.5 keV. Comparison of the neutron scattering and transmission measurements with the B11(d,p) data requires that the resonance be d wave. Various considerations leave 3- as the only plausible assignment. For a spin of 3, the neutron width is Γn=3.1±0.6 eV, which is about equal to the Wigner limit. Neutron-capture measurements, in which the residual B12 activity was observed, clearly showed the resonance and yielded a total radiation width Γγ=0.025±0.008 eV. The 18.36-MeV state in C12 appears to be the Tz=0 analog of this state. © 1969 The American Physical Society.

引用

页码：1612 / &

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