公开(公告)号：US3749910A

公开(公告)日：1973-07-31

申请号：US3749910D

申请日：1970-09-28

Applicant: NAT RES DEV

Inventor： CARR BRION K ,  BRAMWELL S

IPC: G01N23/201 ,  G01N23/12

CPC classification number: G01N23/201

Abstract: When electromagnetic radiation is passed through a heterogeneous material such as a slurry or suspension, part of the radiation will be scattered by the suspending medium and part by the solid particles contained in said medium. If, for example, the radiation used is X-radiation, and if the suspending medium consists of a relatively low atomic number material while the particles consist of a relatively high atomic number material, then due to the fundamental properties of scattered X-rays the bulk of the Compton or modified scattered X-rays will come from the suspending medium, and the Rayleigh or unmodified scattering will come both from the particles and the suspending medium. If the X-ray energy is suitable, the Rayleigh scattering will be independent of the size of the particles, but the Compton scattering will be markedly dependent on the size of the particles. Comparison of the Compton scattering or of the Rayleigh and Compton scattering provides a measure of the size of the solid particles.

Abstract translation: 当电磁辐射通过诸如浆料或悬浮液的不均匀材料时，部分辐射将被悬浮介质和部分被包含在所述介质中的固体颗粒散射。 例如，如果使用的辐射是X射线，并且如果悬浮介质由相对低的原子序数材料组成，而颗粒由相对高的原子序数材料组成，则由于散射X射线的基本特性， 康普顿或修饰的散射X射线的大部分将来自悬浮介质，并且瑞利或未改性的散射将来自颗粒和悬浮介质。 如果X射线能量是合适的，瑞利散射将不依赖于粒子的大小，但康普顿散射将明显取决于粒子的大小。 康普顿散射或瑞利和康普顿散射的比较提供了固体颗粒尺寸的量度。