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Forum: Hadronic Processes
Date: 19 Oct, 2015
From: Eleni <Eleni>

 Hello all,

I am trying to reproduce the photonuclear reaction cross section in the GDR region for Au-197 thus I am using the Hadr03 example for counting the Au196 produced isotopes. I have seen that the class G4PhotonNuclearCrossSection.cc provides the total inelastic cross-sections for all the photonuclear interactions, but how can I access the isotope production cross-section (for example the cross section that corresponds to the reaction Au197(g,n)Au196)?

Does the values in the Isotope Production folder in the G4NDL4.2 provides this information? I have tried to change the cross-section values for the Au-196 but there was no difference in the results.

Regarding these cross-section values (for Au196) I noticed that for example for energy 13.5 MeV the value provided is approximately 200 mb while in EXFOR -for the same energy- the value is around 500 mb. Why is that discrepancy? Could it be a source of understimation for the Au196 production?

Thanks!

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1 None: Re: photonuclear reaction+isotope production cross section   (Daren Sawkey - 19 Oct, 2015)
(_ None: Re: photonuclear reaction+isotope production cross section   (Eleni - 20 Oct, 2015)
(_ None: Re: photonuclear reaction+isotope production cross section   (Daren Sawkey - 21 Oct, 2015)
(_ None: Re: photonuclear reaction+isotope production cross section   (Eleni - 22 Oct, 2015)
(_ None: Re: photonuclear reaction+isotope production cross section   (Daren Sawkey - 22 Oct, 2015)
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