为了测量惯性约束聚变实验中的聚变反应时间过程，研制了一套时间分辨优于40 ps的聚变反应历程测量系统。该系统由闪烁体及鼻锥部分、光学系统和条纹相机系统三部分组成。其中闪烁体将中子信号转换为可见光信号，光学系统则将闪烁体的发光信号成像在条纹相机上进行记录。为得到信号与入射激光的时间关系，还将时标引入了条纹相机进行记录。在神光Ⅲ原型装置上通过实验对其进行了考核，在DT中子产额约为1010条件下成功获得了聚变反应历程及聚变反应峰值时刻，聚变反应峰值时刻测量误差小于15 ps。

In order to accurately measure the fusion reaction-rate of inertial confinement fusion experiments, a system has been developed for fusion reaction history measurement with high temporal resolution which is better than 40 ps. The system is composed of plastic scintillator and nose cone, an optical system and streak camera. The thin piece of scintillator material acts as a neutron-to-light converter. The optical system images light from the scintillator surface to camera for recording.The camera simultaneously records an optical fiducial pulse which allows the camera time base to be calibrated relative to the incident laser. This system has been applied on the SG-Ⅲ prototype. Fusion reaction history and fusion reaction bang time have been measured for deuterium-tritium filled targets with netrons yields about 1010. Fusion reaction bang time can be measured with accuracy as low as 15 ps.