摘要
GFM- 型大面积α、β污染测量仪的探头为平板型流气式正比计数管阵列 ,窗口面积为10 0 0 cm2 ,由 4个灵敏探测区组成 ,每个探测区配有一套电荷灵敏前置放大电路 ,即组成 4套独立的探测通道 ,其特点是 :流气式正比计数器阵列替代单一的流气式正比探头 ,较低的工作电压和快速 α、β同时扫描测量。
GFM-Ⅱ large area surface monitor for α/β contamination is equipped with four independent detecting channels, each channel consists one probe and one charge sensitive amplifier. The pancake probe is flow gas proportional counter tubes array. Total active area of the instrument is 1000 cm 2. This instrument has an rolling frame, so it can move rapidly on flat ground. Its characteristics is that: 1)Use flow gas proportional counter array instead of single counter, 2) Lower working voltage, 3) Simultaneously rapid measurement for α/β.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2002年第4期357-361,共5页
Nuclear Electronics & Detection Technology
