|Message: Re: Missing implementation of deuteron elastic scattering||Not Logged In (login)|
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User Vladimir IVANTCHENKO wrote:
>> > HI, I want to simulate deuteron scattering on a carbon target. My >> > deuterons have a kinetic energy of around 500 MeV In Line 1258 of >> > G4HadronCrossSections.cc, the elastic cross section for deuterons and >> > Helium ions is hardcoded to 0. This process is therefore not implemented >> > for deuterons. >> > >> > I have a few questions about it. -Is this intentionally, or will this >> > situation be fixed in the near future? >> > >> >> Hello, >> >> In the new process G4UHadronElasticProcess it is fixed. This process is >> available since 8.1. >>
thank you for your fast reply. I am currently using the latest version of Geant4 and I have indeed looked into the G4UHadronElasticProcess. However, this process obtains its cross sections from G4HadronElasticDataSet and thus from G4HadronCrossSections. Thus it appears to refer to exactly the same hardcoded zero.
>> > -When I put an arbitrary number here, the process takes place and there >> > is some particle change as a result. Does this particle change reflect >> > reality? >> > >> > -What kind of model do you advise for me to implement to fix this >> > problem? >> > >> > -As the deuteron elastic process is obviously not working, can I still >> > trust the implementation of the Deuteron inelastic process to reflect >> > reality? >> >> Elastic scattering of deuteron due to strong interaction is not the main >> process, because the cross section is relatively small and the effect is >> only scattering on small angle.
I am well aware that this is not the most important effect, but it happens to be the main effect for my study as it is spin dependend.
>> >> > >> > -In the deuteron inelastic process, also deuteron breakup seems to >> > covered next to elastic scattering. Is there a particular reason for >> > this and is there a way for these two interactions to show up under a >> > different name? >> > >> > Thanks ahead, Klaas Brantjes University Groningen >> > >> >> For deuterons I would suggest to use binary cascade as inelastic >> interaction. Some example you can find out >> >> examples/extended/eletromagnetic/TestEm7 >> example/extended/hadronic/Hadr01 >> >> VI >>
I will look into the binary cascade. thank you for the info :)
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