双G-M计数管量程切换控制技术  

The Control Technique of Range Switch for Dual G-M Counter Tubes

作　　者：赵建伟[1] 赵新华[1] 黄晓飞[1] 赵咏梅[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《核电子学与探测技术》2013年第10期1263-1265,共3页Nuclear Electronics & Detection Technology

摘　　要：宽范围γ剂量率监测一般需要多个G-M计数管,而多管量程自动切换是保证探测器正常工作的关键技术。双G-M计数管量程切换控制技术采用串联在G-M计数管阴极处的三极管作为开关管,控制计数管通路的开合,从而控制计数管的高压通断,达到选择不同量程计数管的目的。该技术具有控制简便,切换平稳,工作可靠等优点。Several G - M counter tubes are needed in measurement of wide range γ dose - rate. The auto switch of dual G - M counter tubes is the key technique to assure reliable work of the detectors. The work circuitry of G - M counter tube is controlled by a switch tube connected to its cathode. Then, the High - Voltage of G - M counter tube can be controlled. So, the appointed range tube is selected from dual G - M counter tubes. This technique is stable and convenient. The switch circuitry has high reliability.

关 键 词：双G—M计数管 Γ剂量率 量程切换 开关管 

分 类 号：TP274.51[自动化与计算机技术—检测技术与自动化装置]