长杆电离室校准因子及其残留因子研究  

Study on Calibration Factor and Residual Factor of Long Rod Ionization Chamber

作　　者：康佳佳[1,2] 吴金杰[2] 廖振宇[2,3] 周振杰[1,2] 任世伟[1] 余继利 刘莹[2,3] 杜海燕[2,4] KANG Jia-jia WU Jin -jie LIAO Zhen -yu ZHOU Zhen -jie REN Shi wei YU Ji -li LIU Ying DU Hai -yan(Hebei University Of Science and Technology, Shijiazhuang 050018, China National Institute of Metrology, Beijing 100029, China University of South China, Hengyang 421001, China Chengdu University of Technology, Chengdu 610059, China)

机构地区：[1]河北科技大学,石家庄050018 [2]中国计量科学研究院,北京100029 [3]南华大学,衡阳421001 [4]成都理工大学,成都610059

出　　处：《核电子学与探测技术》2016年第12期1227-1230,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金项目“(10-100)keV单X射线源注量测量方法研究”(11205178)

摘　　要：为研究长杆电离室在医学及科研等领域的特性,通过自主研制的可调节光阑控制不同辐射质下长杆电离室的受照长度,对其空气比释动能变化进行研究分析。结果显示长杆电离室的空气比释动能与受照长度成正比关系,并拥有一个残留因子,而且不同辐射质下校准因子和残留因子也有所不同,为仪器设备校准和医学运用等方面提供了科学依据。in order to study the characteristic of the long bar ionization chamber in the medical and scientific research, the length of the long bar ionization chamber is changed through the adjustable aperture which is independently developed, and it＇s air kerma change is analyzed. The results show that for the long bar of the ionization chamber, the air kerma is proportional to radiation length, which has a residual factor, and the calibration factors and residual factors arc also different under the different radiation conditions, which provides scientific basis for the calibration of equipment and the use of medicine and so on.

关 键 词：长杆电离室 受照长度 空气比释动能 残留因子 校准因子 

分 类 号：TL821[核科学技术—核技术及应用]