探测系统的死时间,就是能够将两个事件(或脉冲)区分开的最小时间间隔。系统的死时间主要由探测器及与其配套的电子测量系统决定。本文介绍了利用双源法和振荡仪法分别测定FP-180标准装置的系统死时间,比较了这两种方法的优缺点并简单介绍了其他测定死时间的方法。 The dead time of the detection system is the minimum time interval that can distinguish two events (or pulses). The dead time of the system is mainly determined by the detector and its associated electronic measurement system. This article describes the dual source method and the oscillator method were used to determine the system dead time FP-180 standard devices, compared the advantages and disadvantages of these two methods and simply introduced other methods to determine the dead time.