符合测量数据采集与处理系统

Data Acquisition and Processing System for Coincidence Measurements

介绍了用4πβ(PC)—γ符合法绝对测量放射性活度的FH1932型符合测量数据采集与处理系统。它可供计量实验室建立放射性活度基准设备用,也可用于核科学研究和工程中核衰变率的绝对测量。采用了数字化方法控制系统死时间和符合分辨时间,精确度可达±2ns。用GPIB接口系统技术进行数据采集和传输,稳定可靠地实现了在线数据处理。与仪器有关的因素对测量精确度的影响能在±0.02％以内。

An. instrument has been designed for the absolute measurement of radioactivity .vylth.. fP,(PQ)-Y coincidence..Tlie instrument can be used as a standard device for the radioactivity measurement in, metrology laboratories. Also it can be used in the nuclear science and engineering research for absolute measurement of nuclear decay rate.The-control of the system dead time and coincidence resolving time, is digitized. The precision can reach +2 ns.For data acquisition and communication the normalizing GPIB interface system technique is adopted.The measuring error caused by this instrument itself can be better than + Q,