多种 β 射线阻挡层的BIXS技术反演方法研究
Study on the inverse methods of BIXS technique using various β-ray stopping layers
作者：何堂将(四川大学原子核科学技术研究所, 辐射物理与技术教育部重点实验室)；黄郁旋(四川大学原子核科学技术研究所, 辐射物理与技术教育部重点实验室)；丁伟(中国工程物理研究院核物理与化学研究所)；毛莉(中国工程物理研究院核物理与化学研究所)；孙洪伟(中国工程物理研究院核物理与化学研究所)；安竹(四川大学原子核科学技术研究所, 辐射物理与技术教育部重点实验室)
Author：HE Tang-Jiang(Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University)；HUANG Yu-Xuan(Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University)；DING Wei(Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics)；MAO Li(Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics)；SUN Hong-Wei(Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics)；AN Zhu(Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University)
收稿日期：2015-11-18 年卷（期）页码：2016,53(4):823-828
期刊名称：四川大学学报: 自然科学版
Journal Name：Journal of Sichuan University (Natural Science Edition)
关键字：BIXS；β射线阻挡层；GENEREG；Regutools
Key words：BIXS; β-ray stopping layer; GENEREG; Regutools
基金项目：国家自然科学基金
中文摘要
我们首次提出在β 衰变诱发 X 射线谱技术（BIXS）中采用金属薄膜代替氩气作为β射线阻挡层来获得氚化钛薄膜样品中氚含量及深度分布信息的方法。本文利用基于Monte Carlo方法的PENELOPE并行模拟程序，分别模拟了以Al、Au金属薄膜和Ar气作为β射线阻挡层的BIXS技术。为了得到可靠的氚分布反演结果，我们比较了GENEREG与Regularization Tools (Regutools) 两种反演程序包的反演方法，研究表明GENEREG程序的反演结果较好。
英文摘要
Instead of argon gas, recently we proposed the use of a metal film as the β-ray stopping layer in the ?-decay induced X-ray spectroscopy (BIXS) to analyze the total tritium content and the tritium depth profile in tritium-contained titanium sample. In this work, we applied the Monte Carlo PENELOPE code to simulate the BIXS experiments using aluminum, gold metal films and argon gas as the β-ray stopping layers, respectively. In order to obtain a better and stable inverse method, GENEREG and Regularization Tools (Regutools) software packages were applied to deal with the ill-posed problem in the BIXS technique. Our results showed that the GENEREG package could provide more reliable results for tritium content and depth distribution analysis.
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