Message: Re: Missing implementation of deuteron elastic scattering Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None Re: Missing implementation of deuteron elastic scattering 

Forum: Hadronic Processes
Re: Question Missing implementation of deuteron elastic scattering (N.P.M. Brantjes)
Date: 07 Dec, 2006
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Wed, 6 Dec 2006, N.P.M. Brantjes wrote:

> *** Discussion title: Hadronic Processes
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/hadronprocess/608"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> HI, I want to simulate deuteron scattering on a carbon target. My
> deuterons have a kinetic energy of around 500 MeV In Line 1258 of
> G4HadronCrossSections.cc, the elastic cross section for deuterons and
> Helium ions is hardcoded to 0. This process is therefore not implemented
> for deuterons.
> 
> I have a few questions about it. -Is this intentionally, or will this
> situation be fixed in the near future?
>

Hello,

In the new process G4UHadronElasticProcess it is fixed. This process is 
available since 8.1.
 
> -When I put an arbitrary number here, the process takes place and there
> is some particle change as a result. Does this particle change reflect
> reality?
> 
> -What kind of model do you advise for me to implement to fix this
> problem?
> 
> -As the deuteron elastic process is obviously not working, can I still
> trust the implementation of the Deuteron inelastic process to reflect
> reality?

Elastic scattering of deuteron due to strong interaction is not the main
process, because the cross section is relatively small and the effect is
only scattering on small angle.

> 
> -In the deuteron inelastic process, also deuteron breakup seems to
> covered next to elastic scattering. Is there a particular reason for
> this and is there a way for these two interactions to show up under a
> different name?
> 
> Thanks ahead, Klaas Brantjes University Groningen
> 

For deuterons I would suggest to use binary cascade as inelastic 
interaction. Some example you can find out

examples/extended/eletromagnetic/TestEm7
example/extended/hadronic/Hadr01

VI

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 None: Re: Missing implementation of deuteron elastic scattering   (N.P.M. Brantjes - 07 Dec, 2006)
(_ None: elastic issues   (Ryan Romero - 26 Jan, 2007)
(_ None: Re: elastic issues   (Vladimir IVANTCHENKO - 29 Jan, 2007)
 Add Message Add Message
to: "Re: Missing implementation of deuteron elastic scattering"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]