5MW低功率堆辐照孔道内快中子通量谱测定

Measurement of Fast Neutron Flux Specturm in Exposure Holes of 5MW Low Power Reactor

本文简要说明了测量快中子通量谱的阈探测片组激活方法,介绍了辐照孔道内快中子通量轴向相对分布的测量结果,报道了堆内 K_(11)、Ⅴ 和 Ⅶ 号辐照孔道内快中子通量谱和 Ⅴ 号孔道快中子积分通量的实验结果。并对实验结果进行了分析和讨论,为该堆的同位素生产和材料辐照提供了十分重要的数据。

In this paper,the threshold foil set activation technique ofmeasuring fast neutron flux spectrum is introduced.The measur-ing results of relative axial distributions of fast neutron fluxspectrum in the exposure holes K_(11),Ⅴ,Ⅶ and fast neutron fluen-ce in the exposure hole V of 5MW LPR are reported.Results arealso snalysed and discussed.The parameters are provided for iso-tope production and material irradiation.