文章叙述了采用三组扩散理论模型研究了插入型中子计测量球团料水分的响应问题。对不同密度和氯分的料进行了数值计算和实验标定。在4—14wt%水分范围内,计数率随水分增大而线性增大。密度变化1%对水分测量值的影响为0.12wt%,氯分变化1wt%的影响为2wt%。理论计算结果经效率修正后与实验测量结果相符合。 The article describes the use of three diffusion model to study the insertion neutron meter to measure the response of the pellet water. The materials with different densities and chlorine contents were numerically calculated and experimentally calibrated. In the 4-14wt% moisture range, the count rate increases linearly with increasing moisture. The effect of 1% change in density on moisture measurement was 0.12% by weight, and 1% by weight change in chlorine was 2% by weight. The theoretical calculation results are validated by the experimental results after the efficiency is corrected.