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Forum: Physics List
Re: Question Resource for Developing new Processes (Sam)
Re: Idea Re: Resource for Developing new Processes (Andrea Dotti)
Re: None Re: Resource for Developing new Processes (Sam)
Re: Idea Re: Resource for Developing new Processes (Andrea Dotti)
Date: 13 Jun, 2012
From: Michael H. Kelsey <Michael H. Kelsey>

On Wed, 13 Jun 2012 10:36:02 GMT, Andrea Dotti wrote:
> Hello, I strongly suggest you to look into the "stopping" directory in
> the hadronic module. You may even found the process already done for
> you:
> http://www-geant4.kek.jp/lxr/source/processes/hadronic/stopping/src/

Hi, Andrea! In fact, the OP started out by using the new PiMinusAbsorptionBertini module. It does not do capture on deuterium properly, because it only treats the interaction with the nucleus.

Vladimir I. has pointed out that for the very light nuclei, we really need to treat capture into a pseudo-atomic orbital, decay in orbit, and those details. This is similar to the recently developed new muon-capture code.

In the 9.5 development tree (incuding 9.6.Beta1), PiMinusAbsorptionBertini will do capture on a deuteron at a low (few per mil) rate, because the new G4HadronStoppingProcess base class doesn't do a cross-section check, but it won't get the full final-state spectra correct in detail.

-- Michael Kelsey

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