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Forum: Hadronic Processes
Re: Question Force a specific reaction (Eric Garrido)
Re: None Re: Force a specific reaction (Dennis H. Wright)
Date: 11 Jul, 2007
From: Vladimir IVANTCHENKO <>

On Wed, 11 Jul 2007, Dennis H. Wright wrote:

> *** Discussion title: Hadronic Processes
> Email replies to must include:
>   In-Reply-To: <"/hadronprocess/729/1">
>   Subject: ...change this to be about your reply.
> There is no model in Geant4 hadronics (except for radioactive decay) 
> which allows you to selectively amplify a single reaction channel.
> A little hacking of the Geant4 code would allow the entire p-Li cross 
> section to be multiplied by a factor, but that is not recommended because
> it would change the mean free path of the proton.
> I think to do what you want requires writing your own hadronic process
> in which only the (p,n) channel occurs.  For this you need to know the
> final energy and angle distribution of the p(Li,n)Be reaction.


Can I add a bit to discussion. There is another option: which can be 
implemented even in UserSteppingAction: analyse final state after 
inelastic reaction and kill event, if not filtered reaction happen.


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1 None: Re: Force a specific reaction   (Eric Garrido - 12 Jul, 2007)
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