在核反应时间过程测量系统中，闪烁体主要用于将中子转换为便于记录的可见光。EJ-232塑料闪烁体的主要特点是响应快、衰减时间短，利用其进行中子光转换可提高系统的时间分辨。利用波长为263 nm的激光激发闪烁体对其时间特性进行了测量，闪烁体尺寸为Φ6 mm×1 mm和Φ6 mm×2 mm。测量结果表明，EJ-232塑料闪烁体的发光上升时间小于30 ps，光致激发荧光衰减常数分别为0.6 ns和1.1 ns。中子激发闪烁体的衰减时间常数比光致激发荧光的衰减常数更长。

EJ-232 is a kind of plastics scintillator with fast time response and decay time, it acts as a neutron-to-light converter in the system of nuclear reaction measurement. Time characteristics of EJ-232 plastics scintillator are measured by using short-pulse laser to excit scintillator in size of Φ6 mm×1 mm and Φ6 mm×2 mm (excited at 263 nm). The results show that the rise time is less than 30 ps for EJ-232 plastics scintillator and the laser excited fluorescence decay constant of the scintillator are 0.6 ns and 1.1 ns. The neutron excited fluorescence decay constant of the scintillator is longer than the laser excited fluorescence decay constant.