| 符合效率示踪法测量99Tc活度 |
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| 引用本文： | 李谋,代义华,刘德敏,许启初,白涛,方荃,商建波,黄萍,钟振原,常永福.符合效率示踪法测量99Tc活度[J].原子能科学技术,2011,45(11):1285-1288. |
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| 作者姓名： | 李谋 代义华 刘德敏 许启初 白涛 方荃 商建波 黄萍 钟振原 常永福 |
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| 作者单位： | 1.西北核技术研究所，陕西 ;西安710024；2.清华大学，北京100084 |
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| 摘 要： | 利用60Co作为示踪核素，采用4πβ-γ符合法绝对测量了示踪核素60Co溶液和60Co+99Tc混合溶液的比活度，采用效率示踪法计算得到被示踪核素99Tc溶液的比活度，最终标定99Tc溶液的比活度为(70.8±1.8)Bq?mg-1（k=2），满足计量保障要求。
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| 关 键 词： | 活度测量 4πβ-γ符合法 效率示踪法 |
Activity Measurement of 99Tc by Coincidence Efficiency Tracing Method |
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| LI Mou,DAI Yi-hua,LIU De-min,XU Qi-chu,BAI Tao,FANG Quan,SHANG Jian-bo,HUANG Ping,ZHONG Zhen-yuan,CHANG Yong-fu.Activity Measurement of 99Tc by Coincidence Efficiency Tracing Method[J].Atomic Energy Science and Technology,2011,45(11):1285-1288. |
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| Authors: | LI Mou DAI Yi-hua LIU De-min XU Qi-chu BAI Tao FANG Quan SHANG Jian-bo HUANG Ping ZHONG Zhen-yuan CHANG Yong-fu |
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| Affiliation: | 1.Northwest Institute of Nuclear Technology, Xi’an 710024, China; 2.Tsinghua University, Beijing 100084, China |
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| Abstract: | The specific activity of 60Co radioactive solution and 60Co+ 99Tc mixing solution was absolutely measured by coincidence method. The specific activity of 99Tc solution was calculated by efficiency tracing method with 60Co as tracer isotope. Final result is that the specific activity of 99Tc solution is (70.8±1.8) Bq?mg-1（k=2）, which can meet the need of measurement task. |
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| Keywords: | activity measurement 4πβ-γ coincidence method efficiency tracing method |
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