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Forum: Hadronic Processes
Re: Question Problems about the (n,2n), (n, n+p) reactions of some elements simulated by HPNeutron, G4.9.6.p02 (Tatsuki.Kaku)
Date: 01 Nov, 2014
From: michel maire <michel maire>

On Sat, 01 Nov 2014 05:47:31 GMT, Tatsuki.Kaku wrote:
> Dear colleagues,
> 
> I study the 14 MeV neutron irradiation of titanium (built by
> G4NistManager), with NeutronHP processes, GEANT4.9.6.p02. I have checked
> the secondaries produced by neutron reactions and found that no nucleus
> (e.g Ti48,Ti47) was produced during the (n,2n) and (n, n+p) reactions
> (please find in the attachment Secondaries-Ti.dat). The information of
> secondaries is retrieved in the SteppingAction. When the occurrence of
> neutron reaction is identified by the PostStepPoint of incident
> neutrons. Tracks of secondaries are obtained by: G4TrackVector trackV =
> GetSecondariesOfCurrentStep(fpSteppingManager ); and the information of
> secondaries are output iteratively. The results are similar in vanadium,
> with no nucleus by the two reactions. However, for the case of iron, the
> production of nucleus can be observed in the (n,2n), (n, n+p) reactions
> (please refer to Secondaries-Fe.dat). I wonder whether this is a bug in
> GEANT4.9.6.p02 and whether it has been fixed in GEANT4.10. Thanks for
> any advice!
> 
> Tatsuki
> 

  Here is a run of example Hadr03 with Geant4.10.0
  As you can see, the recoil nuclei is always generated.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/11/01/10.45-56697-neutron.mac.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/11/01/10.45-95252-Ti48.out.txt

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1 None: Re: Problems about the (n,2n), (n, n+p) reactions of some elements simulated by HPNeutron, G4.9.6.p02 (and G4.10.0.p02)   (Tatsuki.Kaku - 01 Nov, 2014)
(_ None: Re: Problems about the (n,2n), (n, n+p) reactions of some elements simulated by HPNeutron, G4.9.6.p02 (and G4.10.0.p02)   (michel maire - 02 Nov, 2014)
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