|Message: Re: Can gamma production XS exceed the tot-non elastic XS||Not Logged In (login)|
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On Tue, 05 Feb 2013 19:18:07 GMT, Vladimir Ivanchenko wrote:
> Hello, > > There is no direct parametrisation of gamma production cross section. > 4.4 MeV gammas are emitted as a result of de-excitation of exited > nucleus produced in inelastic interaction. So, it is a partial cross > section depending on selected cascade model. > > VI >
ok thanks, I added pre-compound model for law energy and then binary cascade for proton energy above 80MeV. But the gamma production cross section is very lower than experimental values. I also noticed that proton total non-elastic cross-section in the lower energy region is very low if I use Shen XS data. For example 68.8 mb for 7.5 MeV Proton. But Tripathi XS is high in the lower energy (around 156 mb for 7.5 MeV). However both XS values are lower than experimental value in the lower energy.
G4TripathiCrossSection * TripathiCrossSection= new G4TripathiCrossSection; G4IonsShenCrossSection * aShen = new G4IonsShenCrossSection; theIPGenericIon->AddDataSet(aShen); theIPGenericIon->AddDataSet(TripathiCrossSection);
Can I add both XS at the same time as shown above.
with regards sugi
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