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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)
Re: None Re: get Mean free path (michel maire)
Date: 06 Mar, 2014
From: Artem Basalaev <Artem Basalaev>

Hello!

Yes, I see now, it does exactly what I need and even more. Thank you very much!

On Wed, 05 Mar 2014 10:33:13 GMT, michel maire wrote:

> 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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