JR型晶溶发光剂量测量仪及其应用  

LYOLUMINESCENCE DOSIMETER (MODEL JR) AND ITS APPLICATIONS

作　　者：张仲纶[1] 郎淑玉[1] 刘成祥[1] 郑雁珍[1] 赵克俭[1] 

机构地区：[1]中国科学院生物物理研究所

出　　处：《辐射防护》1990年第1期16-22,共7页Radiation Protection

摘　　要：本文介绍了本实验室研制的JR型晶溶发光剂量测量仪的结构、性能及其应用。仪器包括光读出探头、电流转换电路和读数记录系统。仪器可测10^(-10)—10^(-7)A电流。八小时内读取^(14)C光源产生的48个读数,其测量值的相对标准偏差低于0.4％。讨论了所用GDB-52型光电倍增管信噪比随环境温度的变化。给出了两种转换电路(V-f,I-f)的线性与稳定性的测定结果。应用此仪器配合谷氨酰胺剂量计测定了花兰式钴源[7.4×10^(14)Bq(2×10~4Ci)]的中心剂量率,其与用丙氨酸/ESR剂量计和染色聚乙烯薄膜剂量计测量结果的相对偏差均不大于3％。Structure, performance and applications of the lyolumines-cence dosimeter (model JR) developed in our laboratory were described inthis paper.The dosimeter consists of readers, current converters and signalrecorder system.The dosimeter can measure current of 10^(-10)-10^(-7)A.48 data from the photomultiplier due to the exposure of ^(14)C light sourcewere obtained within 8 hours,and the relative standard deviation was lessthan 0.4%. Changes of ratio of signal to noise of photomultiplier corres-ponding to changes in environmental temperature were discussed. Measure-ment results of linearity and stability of both V-f and I-f converters weregiven. The dosimeters were used to measure dose rate in center of ^(60)Cosource [7.4×10^(14) Bq (2×10~4 Ci)]constructed like cylinder.Measurementresults by the dosimeters was compared with those by alanine ESRdosimeters and PE-MG dosimeters,and the relative deviation was less than3%.

关 键 词：晶溶 剂量计 发光 JR型 

分 类 号：TL818.7[核科学技术—核技术及应用]