Cross sections of the 143Nd(n,α)140Ce and 147Sm(n,α)144Nd reactions in the MeV neutron energy region

被引：13

作者：

Gledenov, Yu M. ^{[2
]}

Sedysheva, M. V. ^{[2
]}

Stolupin, V. A. ^{[2
]}

Zhang, Guohui ^{[1
]}

Zhang, Jiaguo ^{[1
]}

Wu, Hao ^{[1
]}

Liu, Jiaming ^{[1
]}

Chen, Jinxiang ^{[1
]}

Khuukhenkhuu, G. ^{[3
]}

Koehler, P. E. ^{[4
]}

Szalanski, P. J. ^{[5
]}

机构：

[1] Peking Univ, Inst Heavy Ion Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[2] Joint Inst Nucl Res Dubna, Frank Lab Neutron Phys, Dubna 141980, Russia

[3] Natl Univ Mongolia, Nucl Res Ctr, Ulaanbaatar, Mongolia

[4] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[5] Univ Lodz, Inst Phys, Lodz, Poland

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 04期

基金：

中国国家自然科学基金; 俄罗斯基础研究基金会;

关键词：

N; ALPHA REACTIONS; SM-147; SAMARIUM; ND-143;

D O I：

10.1103/PhysRevC.80.044602

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：

Cross sections and forward/backward ratios in the laboratory reference system were measured for the Nd-143(n,alpha)Ce-140 reaction at 4.0, 5.0, and 6.0 MeV and for the Sm-147(n,alpha)Nd-144 reaction at 5.0 and 6.0 MeV. A twin-gridded ionization chamber and large-area back-to-back (Nd2O3)-Nd-143 samples and (Sm2O3)-Sm-147 samples were employed. Experiments were performed at the 4.5 MV Van de Graaff accelerator of Peking University, China. Fast neutrons were produced through the H-2(d,n)He-3 reaction by using a deuterium gas target. A small U-238 fission chamber was employed for absolute neutron flux determination, and a BF3 long counter was used as the neutron flux monitor. Present experimental data are compared with previous measurements, evaluations, and model calculations.

引用

页数：5

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