微矩形谐振腔微扰法测量岩石矿物复介电常数

Complex Permittivity of Rock and Mineral Measured by Rectangular Cavity Perturbation Method

详细介绍了矩形谐振腔微扰法的基本原理;通过对比标准物质的测量结果发现,矩形谐振腔微扰法测量复介电常数具有比较高的测量精度,且使用样品少。通过对样品进行混合稀释等预处理,能将该方法应用于岩石矿物复介电常数的测量,并能很好地降低岩石矿物成分分布不均以及结构缺陷所引起的测量误差,更准确地反映岩石矿物的整体介电性质。

Rectangular cavity perturbation theory is described in detail. By comparing the theoretical and measured results, we find that the rectangular cavity perturbation method has relative high precision in complex permittivity. This method can be used to measure the complex permittivity of rock or minerals, after a pretreatment of mixing and diluting the samples. Measurements would reflect the dielectric property of the whole rock or whole mineral exactly, by lower the error arising from the non-uniformity of the mineral components and from structural defects.