四探头井型快中子符合实验装置(图1)主要由四个φ127 mm×50.8 mm的BC501A液体闪烁探测器、DC271A四通道超高速数据采集卡等构成,应用软件同时采集每个探测器输出的脉冲波形,离线对每个脉冲波形进行n/γ甄别,获取其粒子种类与到达时刻,然后进行双、三和四探头间的n/γ时间关联符合分析,获得二重、三重和四重n/γ符合计数。实验装置对0~280 mg同种形态的钚进行了32次测量,测量时样品放在装置的中心。n/γ甄别 The four-probe well-type fast neutron coincidence experiment device (Figure 1) is mainly composed of four φ501 mm × 50.8 mm BC501A liquid scintillation detectors and a DC271A four-channel super-speed data acquisition card. The application software collects each detector output Of the pulse waveform, off-line for each pulse waveform n / γ screening, access to the type of particles and arrival time, and then double, triple and quadrupole time between the probe match analysis to obtain double, triple and quadruple n / γ coincides with the count. The experimental setup measured 32 plutonium from 0 to 280 mg of the same species, with the sample placed in the center of the unit. n / γ screening