|Message: O16(g,alpha)C12 Cross Section||Not Logged In (login)|
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Here at JLab, we want to study the reaction: gamma + O16 --> alpha + C12, Q = -7.1972 MeV
The cross section used in Geant4 is shown in the first attachment. I used a mono-chromatic gammas, measured the number of alphas generated and calculated the cross section. The Photon Inelastic model was CHIPSGammaNuclear. However, BertiniCascade model used in example Hadr03 shows similar jumps.
I want to use a more realistic one from ENDF, shown in the second attachment. Is it possible to get some advice on how to proceed. One might think that the easiest way is to edit the numbers Geant4 is using (where can I find these numbers?).
Thank you very much,
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/03/25/11.31-57218-Geant4_csO16.gif http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/03/25/11.31-79512-ENDF_plot.png