摘要
环境温度对辐射在丙氨酸/电子自旋共振(alanine/ESR)剂量计中感生的顺磁中心相对产额的影响,是它用于量值传递时的一项重要修正因素。本工作在控制影响因素不变的条件下,对它进行了系统研究。得到了当总剂量分别为1.0×10~5、1.4×10~4和1.4×10~3Gy时,温度10-70℃范围内的灵敏度平均温度系数(ΔS/S)/ΔT分别为0.252％℃^(-1)、0.222％℃^(-1)和0.237％℃^(-1)。实验结果表明,在剂量高于10~3Gy范围内,温度系数略依赖于总剂量和所处的照射温度。
The present work has dealt extcnsively and systematically with theeffect of ambient temperature on the relative sensity of paramagentic centres for DL-alanine dosimeter during irradiation under the conditions of some other affecting fac-tors nnchanged. The average temperature coefficients obtained are 0.00252, 0.00222and 0.00237℃^(-1) for the total doses of 10~5, 10~4, and 10~3Gy rcspectively. The dataare instructive not only in practical use of alanine/ESR dosimetry as a transferdosimeter but also in examining the mechanism on formation of paramagneticcentres.
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
北大核心
1992年第4期203-206,219,共5页
Journal of Radiation Research and Radiation Processing
关键词
丙氨酸
电子自旋共振
剂量计
温度
Alanine
Electron spin resonance
Dosimeter
Transfer dosimeter
Temperature coefficient
