| 用Monte-Carlo方法计算正电子湮没寿命谱中的衬底效应 |
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| 引用本文： | 雷海乐,应三丛,张一云,徐家云.用Monte-Carlo方法计算正电子湮没寿命谱中的衬底效应[J].核技术,2000,23(6):397-400. |
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| 作者姓名： | 雷海乐 应三丛 张一云 徐家云 |
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| 作者单位： | 四川大学 成都610064 |
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| 摘 要： | 用Ｍｏｎｔｅ－Ｃａｒｌｏ方法模拟计算了＾３２Ｎａ源的正电子在不同厚度Ｍｙｌａｒ膜，Ｎｉ膜衬底中的湮没几率，得出Ｓｉ，Ｆｅ、ＰＥ，ＰＰ４种样品在不同Ｍｙｌａｒ膜厚度下的衬底效应。结果，对ＰＥ、ＰＰ样品衬底铲应较Ｓｉ、Ｆｅ等样品强，表明用Ｍｏｎｔｅ－Ｃａｒｌｏ方法计算衬底效应是可行的。
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| 关 键 词： | Monte－Carlo模拟 正电子湮没寿命谱 衬底效应 |
| 修稿时间： | 2000年1月7日 |
Application of Monte-Carlo method to calculate the substrate effectin the lifetime spectrum of positron annihilation |
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| LEI Haile,YING Sancong,ZHANG Yiyun,XU Jiayun.Application of Monte-Carlo method to calculate the substrate effectin the lifetime spectrum of positron annihilation[J].Nuclear Techniques,2000,23(6):397-400. |
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| Authors: | LEI Haile YING Sancong ZHANG Yiyun XU Jiayun |
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| Abstract: | Monte-Carlo method was applied to calculate the annihilation probabilities of positrons from 22Na in Mylar and Ni films with different thickness. Results of substrate effects of Mylar films with different thickness for sample of Si, Fe, PE and PP were obtained. The results showed that the substrate effects for samples PE and PP were stronger than those for Si and Fe. Therefore it is feasible for using Monte-Carlo method to calculate substrate effect. |
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| Keywords: | nte-Carlo simulation Positron annihilation lifetime spectrum Z1Substrate effect |
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