快速关联事件时间分布测量线路设计

CIRCUIT DESIGN OF MEASUREMENT OF TIME DISTRIBUTION FOR FAST CORRELATING EVENTS

对氘／固体系统热循环异常物理现象的研究工作中，骤发中子群的关联事件时间分布测量专用电路的设计、工作过程作了说明。本电路主要用于记录关联主触发事件发生后１２８μｓ时间内，关联事件（骤发中子群）发生的时间和数量。其事件时间分布分辨能力≥０．５μｓ，最大事件计数率为２×１０６ｓ－１。参照逻辑框图，可以对快速关联事件时间分布测量的数据采集过程。

The special circuit and its working procedure for measurement of time distribution of neutron bursts in the thermal cycle of metal(Ti) absorbed in pressurized deuterium gas are described in the paper.Once master trigger event appears,the time distribution and amount of correlating events (neutron burst) can be recorded in the double ports memory buffer in 128 μs period.The random data of uncorrelating events can be recorded regularly also.The resolution ability of time distribution is ≥0.5 μs, counting rate of events up to 2×10 6 s -1