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引用本文格式: 张磊,白立新. 基于MCNP和能谱法对γ射线吸收实验的改进 [J]. 四川大学学报: 自然科学版, 2019, 56: 104~108.
 
基于MCNP和能谱法对γ射线吸收实验的改进
The Improvement of the Experiment about the Absorption of Gamma Ray based on the MCNP and the Energy Spectrum Method
摘要点击 198  全文点击 51  投稿时间:2017-05-18  修订日期:2017-05-29
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DOI编号   
中文关键词   MCNP程序  能谱法  线性吸收系数
英文关键词   MCNP program  γ-ray energy spectrum analysis  Linear absorption coefficient
基金项目   
作者单位E-mail
张磊 四川大学物理科学与技术学院 rizhaozhanglei@126.com 
白立新 四川大学物理科学与技术学院  
中文摘要
    针对一般的测量物质线性吸收系数实验的缺点,文章利用Monte Carlo N Particle Transport Code(MCNP) 和全能峰面积法模拟计算了不同实验条件下物质γ射线吸收的线性吸收系数,计算与公认值的偏差. 通过使偏差在较小的合理范围内,并与其它方法对比,找出了合适的实验条件,使测量装置易于调适,可得射线能量信息,而且比计数法的准确度高,探测效率较高,以此改进并简化了实验.
英文摘要
    In view of the defect of the traditional measurements of materials linear absorption coefficients, in this work the linear absorption coefficients of gamma ray in different experimental conditions are simulated and calculated using the Monte Carlo N Particle Transport Code (MCNP) and the method of full energy peak area, and the deviations of the coefficients from the recognized values are also calculated. The appropriate experimental condition is obtained by reducing the deviation to a reasonable scope and contrasting with other methods. As a result, the approved measuring equipment which is easy to adjust is able to obtain the information about radiation energy. It offers a better accuracy and higher detection efficiency compared with the counting method.

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