TAM-Ⅱ型空气中氚监测仪的研制  

Development of a new monitor for tritium in air model TAM-Ⅱ

作　　者：吴斌[1] 杨海兰[1] 温雪莲[1] 赵漪[1] 杨怀元[1] 

机构地区：[1]中国辐射防护研究院,山西太原030006

出　　处：《核电子学与探测技术》2001年第2期100-103,共4页Nuclear Electronics & Detection Technology

摘　　要：介绍了 TAM- 型实时连续氚监测仪的研制。仪器的探测器由 4个对称放置的有效体积为2 L丝壁电离室构成 ,使电离室对被监测氚产生的记忆效应减到最小 ,对 γ本底的补偿 ,在几乎所有方向好于 97%。该探测器配备一台工作在微电流积分模式的场效应管静电计 ,氚监测仪的测量过程由一个单片机自动控制 ,如自动转换量程、数据显示、储存与处理。该监测仪的测量范围为 6～ 10 6Bq/L,特别适用于氚设施和实验室手套箱或烟囱排出氚的连续自动监测。This paper introduces development of a real time continuous tritium monitor model TAM Ⅱ. The detector of the instrument is comprised of four geometric symmetry open wall ionization chamber with the effective volume of 2L, which enables to minimize the remember effect of the ionization chamber due to contamination by the monitored tritium. It's γ background compensation rate is better than 97% in almost all direction. The detector is equipped with a FET static electrometer working in micro current integration mode. The measurement process of the tritium monitor can be controlled automatically by a micro processor sheet, such as automatic range changing, data displaying and storing, and data processing. The measuring range is 6～10 6Bq/L. It is especially application for monitoring tritium in off gas effluence from glove box or stack of tritium facility and laboratory.

关 键 词：氚监测仪 电离室 静电计 空气 放射性物质监测 

分 类 号：X837[环境科学与工程—环境工程] TL811[核科学技术—核技术及应用]