Cross-sections for formation of 178m2Hf and 179m2Hf through reactions on natural hafnium at neutron energy 14.8±0.2 MeV

被引：10
作者：
Luo, Junhua [1 ,2 ]
Tuo, Fei [3 ]
Kong, Xiangzhong [1 ]
机构：
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
[2] Hexi Univ, Dept Phys Sci & Elect Technol, Zhangye 734000, Gansu, Peoples R China
[3] China CDC, Natl Inst Radiol Protect, Beijing 100088, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2011年 / 288卷 / 01期
关键词：
(n; x); Reaction; Cross section; Neutrons; Activation technique; Hafnium; EXCITATION-FUNCTIONS; N; ALPHA REACTIONS; THRESHOLD; REGION; RANGE; ISOTOPES; RATIOS; P;
D O I：
10.1007/s10967-010-0963-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The cross sections for formation of metastable state of Hf-178 (Hf-178m2, 574.215 keV, 31 y) and Hf-179 (Hf-179m2, 362.55 keV, 25.05 d) through reactions induced by 14.8 +/- A 0.2 MeV neutrons on natural hafnium were measured for the first time. The monoenergetic neutron beam was produced via the H-3(d, n)He-4 reaction on ZF-300-II Intense Neutron Generator at Lanzhou University. Induced gamma activities were measured by a gamma-ray spectrometer with high-purity germanium (HPGe) detector. Measurements were corrected for gamma-ray attenuations, random coincidence (pile-up), dead time and fluctuation of neutron flux. The neutron fluence were determined by the cross section of Nb-93(n, 2n)Nb-92m reaction. The neutron energy in the measurement were by the cross section ratios of Zr-90(n, 2n)Zr89m+g and Nb-93(n, 2n)Nb-92m reactions.
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页码：143 / 148
页数：6
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