γ射线质量吸收系数测量条件的研究  

STUDY ON MEASUREMENT CONDITION OF THE MASS ABSORPTION COEFFICIENT FOR GAMMA-RAYS

作　　者：张礼华 林惠玉 吕驰云 张炳岳 谢东[2] 

机构地区：[1]扬州师院物理系 [2]河北师范大学

出　　处：《扬州师院学报（自然科学版）》1992年第1期49-53,共5页

摘　　要：研究了各种实验条件对γ射线质量吸收系数测量结果的影响,提出了用“单道阈值法”测量质量吸收系数的新方法,该法可在“宽束”条件下进行测量,简化了笨重的铅准直系统以及对测量条件的严格要求,能达到相当的测量精度。The influences of variant experiment conditions on the measurement results of the mass absorption coefficient for gamma-rays are studied.The method' regulating threshold of single channel' is proposed as a new way for measuring the mass absorption coefficient. Using this method, the mass absorption coefficient may be measured in wide beam of gamma-rays, the heavy lead collimation system and harsh measurement conditions are omited and the measurement precision is improved.

关 键 词：Γ辐射 质量吸收系数 甄别阈 

分 类 号：O571.32[理学—粒子物理与原子核物理]