摘要
调研了各类钍射气(220Rn)测量仪的刻度方法和存在的问题。针对各类220Rn标准源的析出百分率常小于100%而有待准确测定这一关键问题,建立了流气闪烁室绝对测量方法,并用活性炭 g谱法作了验证,解决了准确测定220Rn标准源析出率的问题,为提高220Rn测量仪刻度的准确性创造了条件。
The calibration of various kinds of thoron monitor has been investigated. A main problem lies in that the emanation percentage of various kinds of thoron standard source is always less than 100%. In order to determine the emanation percentage accurately, an absolute measurement method with airflow-through scintillation cell was established, and its feasibility was verified by a comparative measurement with the activated charcoal-g spectrometer method. This will make the calibration accuracy of thoron monitors rising.
出处
《核技术》
CAS
CSCD
北大核心
2003年第7期561-563,共3页
Nuclear Techniques
关键词
^220Rn测量
刻度
流气法
Thoron, Measurement, Calibration, Airflow method CLC O613.16
