中文摘要：

由241Am-Be中子源、锂玻璃探测器和微机多道谱仪等组成的实验装置，测量了不同石蜡（模拟油垢）厚度的散射中子计数。同时用蒙特卡罗模拟，分别对241Am-Be中子源、252Cf中子源和14MeV中子源，计算得到了相似几何条件下，对应于不同石蜡（模拟油垢）厚度的散射中子计数。在模拟计算中，考虑了锂玻璃探测器的探测效率。对实验和模拟计算的结果进行了比较和讨论。

英文摘要：

A set of scattered neutron counts corresponding to different paraffin （simulated grease stain） thicknesses was obtained by using an experiment setup, which consists of a neutron source of 241 Am-Be, a Li-glass detector and a micro-computerized multi-channel spectrometer etc. In addition, by using Monte-Carlo program with the similar geometry, scattered neutron counts for different paraffin thicknesses were obtained for a 241 Am-Be energy spectrum, a 252Cf spectrum and a 14MeV spectrum In simulation, the detection efficiency of the El-glass detector was considered. Comparison and discussion were carried out between the experimental and simulation results.