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1. 清华大学工程物理系
2. 西北核技术研究所
纸质出版日期:2011-05-01
移动端阅览
[1]张小林,李元景,刘杰.含钍的铀矿样品中~(40)K放射性活度的测定[J].核技术,2011,34(05):354-357.
ZHANG Xiaolin~. Radioactivity measurement of 40K in Th-containing uranium ore samples[J]. Nuclear techniques, 2011, 34(5): 354-357.
[1]张小林,李元景,刘杰.含钍的铀矿样品中~(40)K放射性活度的测定[J].核技术,2011,34(05):354-357. DOI:
ZHANG Xiaolin~. Radioactivity measurement of 40K in Th-containing uranium ore samples[J]. Nuclear techniques, 2011, 34(5): 354-357. DOI:
根据钍标准样品得到
228
Acγ射线峰的计数关联比值
由于钍标准样品中不含有
40
K
因此该比值未受γ重峰干扰的影响。利用该比值直接扣除样品中
Ac对
K的干扰
而不需进行重峰分解;该方法也不需
Acγ射线发射几率的数值
避开了不同文献值的差异所带来的系统偏差
因此方法比较可靠。应用该方法采用HPGeγ谱仪测定了某铀矿样品中
K的放射性活度。
In this study
the count rate ratio of
Ac was obtained from a standard sample of
232
Th.The ratio is not interfered by the overlap peak
which is ascribed to absence of
K in the standard sample of
Th.Using this ratio
instead of overlap peak separation
the
K interference can be eliminated.The method based on the ratio is reliable because gamma-ray emission probability of
Ac varied in different databases is not required.No system error is presented in this method.The radioactivity of
K in a uranium ore sample is measured by this method through HPGeγspectrometry.
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