本文用石蜡模拟油垢,用γ射线垂直入射,以一定的散射角接收散射γ光子数,发现散射γ计数与被测石蜡厚度之间存在很好的线性关系。为散射法检测油垢厚度的实验研究奠定了基础。 In this paper, paraffin was used to simulate grease, which was incident perpendicularly with γ-ray and received scattered γ photon number with a certain scattering angle. It was found that there was a good linear relationship between the scattering γ count and the measured paraffin thickness. The scattering method for the determination of grease thickness of the experimental study laid the foundation.