高校实验室放射源虚拟化设计方法

Virtualization Method of Radioactive Source in University Laboratories

遵循放射源发射射线和射线探测通道的随机特性规律,提出了以Matlab软件为平台的高校实验室放射源虚拟化设计方法,给出了设计虚拟化放射源的具体算法和图形化程序模块。以实物放射源137Cs、226Ra和232Th及其组合放射源为例,从能谱形成中的统计涨落角度展示了实物放射源的虚拟化实现过程。分析结果表明,虚拟放射源与实物放射源的统计特性相差较小,它能逼真地模拟实验室现有、未有或者难以配备的实物放射源,产生更为灵活丰富的核信号。不但能减少师生们在教学和科研实验中接触射线的时间,打消学生们的恐惧心理,激发他们的学习兴趣,提高他们的专业技能,还能为核科学研究提供强有力的技术支撑。

In view of the random properties of radioactive source and its detecting channels, with the Matlab platform, a virtualization method of radioactive source in universities laboratory was proposed. The algorithm and the visualization program module were provided in detail. Taking real source ＇37Cs, 226Ra, 232Th and their combination as an example, and using the statistical fluctuation of forming spectrum, the virtualization process for real radioactive source was shown. Analysis showed that the statistic characteristics of virtual source were close to that of real radioactive source, it can realistically simulate the real radioactive source that is existing or not, or equipped difficultly in laboratory, it can generate more flexible and abundant nuclear signals. This method can not only reduce the number of hours teachers and students contact with rays in teaching and scientific experiments, eliminate students＇ learning, improve their professional skills, but also provide powerful technical support for fear, excite their interest in research in nuclear science.