|Message: RE: different proton inelastic models||Not Logged In (login)|
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Thank you very much Dennis. But with LEP I did get some gammas emited from proton inelastic collisions... Much fewer gammas than the other models though... mary -----Original Message----- From: Dennis H. Wright [mailto:firstname.lastname@example.org] Sent: 18 July 2007 21:19 To: PublicHyperNews@slac.stanford.edu Subject: Re: different proton inelastic models *** Discussion title: Hadronic Processes Email replies to PublicHyperNews@slac.stanford.edu must include: In-Reply-To: <"/hadronprocess/735/1"@geant4-hn.slac.stanford.edu> Subject: ...change this to be about your reply. Hi Mary, These energies are too low for most Geant4 hadronic models, which were typically designed for hundreds of MeV up to a TeV. As a result, there has been little validation in this region (except for neutrons) and it is not surprising that you got such different results. Note that the G4LEProtonInelastic model does not produce gammas, so you should not use it in this particular application. None of the other three models (Bertini, Binary, Precompound) have been validated at 10 MeV. The precompound model has been validated a little at 30 MeV, but not for outgoing gammas. There is really only one way to know which model is best: compare to data if you have it. If not, you need to make some guesses as to what is reasonable. An educated guess on my part would prefer the Bertini model (G4CascadeInterface). Dennis
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