In a word, the Fraunhofer diffraction theory is one of the approximate expressions of the Mie scattering theory. Let's take a look at the relationship between the Fraunhofer diffraction theory and Mie scattering theory. However, in actual measurement of particle size distribution, the measurement time is not affected at all since there are parameter tables already calculated and stored in computer memory. That is, these theories are used to calculate what kind of light intensity distribution patterns are produced by particles of various sizes, and this data is stored beforehand on a computer as a parameter table (numerical table) containing a vast amount of information.Ī considerable amount of time is required for calculating this parameter table. The Fraunhofer diffraction theory and Mie scattering theory are used to obtain this relationship. For this, the correspondence relationship between particle size and light intensity distribution pattern must be known in advance. With the laser diffraction/scattering method, particle size is specified from the light intensity distribution pattern.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |