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Forum: Fast Simulation, Transportation & Others
Re: Question get Mean free path (Artem Basalaev)
Re: None Re: get Mean free path (michel maire)
Re: None Re: get Mean free path (Artem Basalaev)
Date: 05 Mar, 2014
From: michel maire <michel maire>

On Tue, 04 Mar 2014 12:55:42 GMT, Artem Basalaev wrote:
> 
> Obviously, Geant calculates somehow the probability of interaction with
> given material: P = 1 - exp (- layerThickness/meanFreePath) So I want to
> get this meanFreePath value.

  Indeed  this is what the example does, because :
  1- there is no Em processes registered
  2- event is killed at first step. So, this unique step is always governed by hadronic interaction, according the exponential law.

 Also, you will see how to extract hadronic cross sections from Geant4 data tables via G4HadronicProcessStore

 In attachement, an example of macro and output

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/03/05/02.28-96884-artem.mac.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/03/05/02.28-29853-artem.log.txt

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1 Ok: Re: get Mean free path   (Artem Basalaev - 06 Mar, 2014)
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