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Forum: Hadronic Processes
Re: Question model recommended for 3 MeV protons induced n spallation in Lithium (Adriana Bungau)
Date: 15 Mar, 2012
From: Zach Hartwig <Zach Hartwig>

Hi Adriana,

In my experience, Geant4 does not adequately (if at all) correctly simulate charge particle nuclear reactions below spallation energies (ie tens to hundreds of MeV) where the "BERT" (Bertini cascade) and "BIC" (Binary cascade) components of the physics models do an excellent job. Geant4 does not explicity incorporate channel-based models with data-driven cross sections for charged particle nuclear reactions (as it does for neutron reactions with the "HP" physics and G4NDL data library). Recommendations in the past have been to implement your own physics process where you can implement the reaction cross section and kinetmatics. I have only partially done this.

I have requested low-energy charged particle reactions from the Geant4 collaboration: they reply that it is in their development plans but not being worked on due to manpower constraints. See http://indico.cern.ch/getFile.py/access?resId=1&materialId=slides&contribId=3&sessionId=0&subContId=0&confId=102988 I've thought about starting to develop such functionality, but (like the Geant4 developers) have a lot of my plate at the moment!

I am very interested in several low-energy reactions: D+D, p+Li, D+B11, p+C for energies below 20 MeV. Can you tell me what MCNPX physics/data libraries you used to successfully produce your p+Li products (perhaps offline...you can find my email by clicking my name above...)?

~ZSH

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