温度对液体闪烁体效率的影响  

TEMPERATURE EFFECT OF EFFICIENCY FOR LIQUID SCINTILLATORS

作　　者：翟盛庭[1] 黎玉萍[1] 刘献忠[1] 

机构地区：[1]中国核动力研究设计院

出　　处：《原子能科学技术》1996年第5期459-461,共3页Atomic Energy Science and Technology

摘　　要：用双管液体闪烁符合计数法测定了温度对６种常用液体闪烁体效率的影响。在２℃时，实验观测到一些闪烁液的３Ｈ符合计数效率比室温时下降２．９％－５．９％，另一些则增加７．５％，最高可增加６０％以上。ＥＭＩ９６３５ＱＢ型光电倍增管的热噪声计数率下降到室温时的１／４－１／３。The effect of temperature on 3H counting efficiency of six kinds of liquid scintillators are measured using coincidence counting method of two photomultiplier liquid scintillation counter.The experimental results show that the 3H coincidence counting efficiency of some liquid scintillators at 2 ℃ decreases by 2. 9%-5. 9% as compared with the efficiency at room temperature,some of them increases by 7.5%, and even over 60 %. Thermal noise counting rate of the EMI 9635 QB type photomeltipliers reduces to 1/4-1/3 of the rate at room temperature.

关 键 词：液体闪烁体 效率 温度效应 闪烁探测 

分 类 号：TL812[核科学技术—核技术及应用]