在次临界堆(如ADS次临界堆)物理实验中,反应堆动态参数的测量很重要,通常测量瞬发中子动态参数α的值。反应堆在各种不同次临界装载下的α值可反映堆的次临界深度及相关的中子 In the physics experiments of subcritical heaps (such as ADS subcritical heaps), it is important to measure the dynamic parameters of the reactor, usually measuring the value of instantaneous neutron dynamic parameter α. The value of a for a reactor at various sub-critical loadings reflects the sub-critical depth of the reactor and the associated neutrons