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Question Re: angular distribution for photonuclear reaction 

Forum: Hadronic Processes
Re: Question angular distribution for photonuclear reaction (Zoltan Elekes)
Re: None Re: angular distribution for photonuclear reaction (Dennis H. Wright)
Date: 14 Mar, 2012
From: Zoltan Elekes <Zoltan Elekes>

Dear Dennis,

thanks for your answer. I am actually interested in 2H(gamma,n) reaction at low energies (GDR region). I have found that Geant4 uses a parametrization for the cross section based on the cross sections of 14 nuclei from the ENDF database. Is there some angular distribution coded in Geant4 for my specific reaction? If yes, how is it done?

Cheers, Zoltan

On Tue, 13 Mar 2012 21:18:14 GMT, Dennis H. Wright wrote:

> Photo-nuclear physics below about 3 GeV is currently handled by the
> CHIPS (Chiral Invariant Phase Space) model, which is covered in the
> Physics Reference Manual. However, there is no specific description
> there of the angular distribution. In the CHIPS model, the gamma is
> absorbed on clusters within the nucleus which may then disintegrate. The
> products of the disintegration then re-scatter until they escape the
> nucleus or are absorbed. For the most part Geant4 does not handle the
> low-lying nuclear levels with specific angular momentum, so angular
> distributions will not reflect specific quantum numbers. Exceptions to
> this are the high precision neutron models and radioactive decay.
> 

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1 None: Re: angular distribution for photonuclear reaction   (Dennis H. Wright - 15 Mar, 2012)
1 Question: Re: angular distribution for photonuclear reaction   (Zoltan Elekes - 16 Mar, 2012)
(_ None: Re: angular distribution for photonuclear reaction   (Dennis H. Wright - 02 Apr, 2012)
2 Question: Re: angular distribution for photonuclear reaction   (emc2 - 31 Mar, 2012)
1 None: Re: angular distribution for photonuclear reaction   (Dennis H. Wright - 02 Apr, 2012)
3 Question: Re: angular distribution for photonuclear reaction   (emc2 - 01 Apr, 2012)
1 Sad: Re: angular distribution for photonuclear reaction   (emc2 - 20 Apr, 2012)
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