摘要
n、γ混合场中测量γ辐射时,通常要应用无机闪烁体构成探测器,探测器抗中子干扰能力是判断测量信号质量的重要依据之一。无机闪烁体的γ绝对灵敏度是可以比较精确标定的,而无机闪烁体的中子绝对灵敏度是很难精确标定的,本文介绍稳态辐射源电流标定法,在不用测量测点注量率的情况下,也能够初步评估出无机闪烁体的抗中子干扰能力。
When measuringγradiation in the neutron-gamma mixed field with inorganic scintillator as detector, the capacity of resisting neutrons-disturbance of the detector is an important basis for judging the quality of the signal. The γ absolute sensitivity of the inorganic scintillator can be calibrated accurately, but the neutron absolute sensitivity is very hard to be calibrated accurately. On the basis of this fact, this paper introduced the steady radiation source-current method and with which, the capacity of resisting neutrons-disturbance for inorganic scintillator can be evaluated without the measurement of neutron fluence rate.
出处
《中国测试》
CAS
北大核心
2012年第4期10-12,共3页
China Measurement & Test
基金
国防科学技术工业委员会民口配套研制项目(MKPT-05-084)
中国工程物理研究院专项课题(902-305)
