Determination of (n, γ) cross sections in the rare-earth region using the surrogate ratio method

被引：19

作者：

Goldblum, B. L. ^{[1
]}

Prussin, S. G. ^{[1
]}

Agvaanluvsan, U. ^{[2
]}

Bernstein, L. A. ^{[2
]}

Bleuel, D. L. ^{[2
]}

Younes, W. ^{[2
]}

Guttormsen, M. ^{[3
]}

机构：

[1] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[3] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

来源：

PHYSICAL REVIEW C | 2008年 / 78卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevC.78.064606

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 surrogate ratio method was used to convert experimentally determined relative gamma-decay probabilities for excited Yb-171 and Dy-161 nuclei, populated using (He-3, He-3') and (He-3, alpha) reactions, into neutron-induced gamma-decay cross sections in an equivalent neutron energy range of 165-465 keV. The relative gamma-decay probabilities were measured using the CACTUS array at the Oslo Cyclotron Laboratory and were found to agree with the ratio of neutron-induced gamma-decay cross sections for the same compound nuclei over the range of excitation energies measured. No significant entrance-channel effects on the extracted (n, gamma) cross sections were observed. The cross sections obtained using the surrogate ratio method were compared to directly measured neutron-capture cross sections and found to agree within the total estimated uncertainty over the range of equivalent neutron energies measured.

引用

页数：6

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