用β源实现X、γ标准仪器的标定及量程扩展  

CALIBRATION OF X AND GAMMA DOSIMETERS BY BETA SOURCE

作　　者：张友忠[1] 

机构地区：[1]中国辐射防护研究院

出　　处：《原子能科学技术》1998年第6期546-549,共4页Atomic Energy Science and Technology

摘　　要：用ＮＰＬ－２５６０剂量计测量自备的９０Ｓｒ检验源，标定其探头与灵敏度更高的电荷测量系统组成的新剂量计，使其测量下限向低端扩展。In the paper a novel way of calibration for X and gamma dosimeter is described. NPL 2560 is a therapy level exposure meter. In this work the detector of NPL 2560 is connected with a high sensitive electrometer, in this way a new exposure meter which provides higher sensitivity is developed. A calibration of this kind of exposure meter usually is done with the X and gamma beams. In this work the calibration has been done with the beta radiation of a 90 Sr check source attached to the NPL 2560. The principle and operation is described in detail.

关 键 词：标定 量值传递 量值溯源 Β源 X射线 Γ射线 

分 类 号：TL84[核科学技术—核技术及应用] TB89[一般工业技术—摄影技术]