|Message: Re: Problems about the (n,2n), (n, n+p) reactions of some elements simulated by HPNeutron, G4.9.6.p02||Not Logged In (login)|
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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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