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Question Change in G4PreCompound model 

Forum: Hadronic Processes
Date: 20 Sep, 2011
From: Dennis Mackin <Dennis Mackin>

We have a model of a 110 MeV proton beam on a tissue target which we have used since version 4.9.1_p03. It is based on the HadronTherapy example. When we updated to version 4.9.4_p02, we noticed some significant changes to the results.

To begin with the nuclear de-excitation gamma distribution used to be clearly quantized the expected characteristic spectra with version 4.9.1. With version 4.9.4, the gamma energies are smeared (see attached plot). Does anyone know why the energies are now smeared?

Any help will be appreciated.

Thanks. http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2011/09/20/15.10-37237-gamma_energies.gif

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1 Idea: Re: Change in G4PreCompound model   (Vladimir Ivanchenko - 20 Sep, 2011)
1 Question: Re: Change in G4PreCompound model   (Steve Peterson - 27 Sep, 2011)
(_ Idea: Re: Change in G4PreCompound model   (Vladimir Ivanchenko - 04 Oct, 2011)
(_ Question: Re: Change in G4PreCompound model   (Dennis Mackin - 21 Mar, 2012)
2 None: Re: Change in G4PreCompound model   (Eunsin Lee - 04 Jun, 2013)
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