Scattering: destructive interference for large particles

[jennyjones]

Can someone maybe explain me(or has a good link to a page where this is explained)
why scattering in perpendicular direction is suppressed by destructive interference for large particles.

i'm trying to understand mie and rayleigh scattering and don't really get why there is no scattering in perpendicular direction with large particles, so mie scattering.

I know the you have to look at the larger particle a multipolar particle, and the larger the particle is the more forward scattering there is. Again I'm not sure why this is!

Thanx,

jenny

 

[Aaron Barnard]

The best explanation of the phenomenon of destructive interference leading to suppression of scattering in perpendicular directions for large particles can be found in the book "Scattering of Light and other Electromagnetic Radiation" by Myron K. Jacobowitz. In this book, Jacobowitz explains the concept of Mie scattering theory, which is based on the idea that a particle can be represented as a series of multipole moments, each of which radiates spherical waves in different directions. The waves produced by each of these multipole moments interfere with each other, leading to a net wave that has different magnitudes depending on the direction of the incident light. The interference between the multipole moments is constructive in the forward direction of the particle, leading to increased scattering in that direction, while it is destructive in the perpendicular direction, leading to decreased or no scattering in that direction. This explains why large particles tend to have most of their scattering in the forward direction.