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Question Mie scattering cross section  

Forum: Processes Involving Optical Photons
Date: 17 Apr, 2012
From: vesna cuplov <vesna cuplov>


I would like to have a precision concerning the Rayleigh or Mie scattering processes. For both processes, the user provides the values of the scattering length which will be returned by the code as the mean free path of the process.

Comparing to other physical processes in Geant4, the code for Rayleigh or Mie doesn't calculate (or get from a database) the cross section in order to decide WHERE the interaction will occur? Is that correct?

I think I am a little bit confused because we provide the scattering length so we know the distance at which the photon will scatter (we do not apply the GILP method). But how do we get the probability of interaction at that step length? How do we know WHEN the process will occur? Don't we need the Rayleigh or Mie cross section anyway?

thanks for your help, vesna

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1 Feedback: Re: Mie scattering cross section   (Gumplinger Peter - 25 Apr, 2012)
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