反符合屏蔽4πβ计数器^3He中微量^3H2分析装置  

A microanalytic anticoincidence 4πβ counter for 3H 2 in 3He

作　　者：孔祥忠[1] 李公平[1] 杨景康[1] 梁国照 董俊明 秦广成 阎爱邦 

机构地区：[1]兰州大学

出　　处：《核技术》1997年第2期123-126,共4页Nuclear Techniques

摘　　要：介绍了一种低本底微量气态氚测量装置的结构、性能以及２Ｈｅ中微量３Ｈ２的分析结果。它具有结构简单、动态精度高等优点，定量测量下限为Ｎ（３Ｈ２）／Ｎ（３Ｈｅ）＜１０－１１。A microanalytic 4πβ counter with anticoincidence shield for 3H 2 in 3He is introduced. As a low background microanalysis device of gaseous tritium, this instrument has advantages such as simple structure, high accuracy and low detection limit [N ( 3H 2) /N( 3He)<10 -11 ]. In this paper the structure and main performance of the counter is described and the test results for 3H 2 in 3He are given.

关 键 词：反符合屏蔽 β计数器 氚 氢3分析 

分 类 号：TL816.2[核科学技术—核技术及应用] O613.2[理学—无机化学]