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Question Difference in cross section output 

Forum: Hadronic Processes
Date: 11 Aug, 2016
From: <jeonyboy@gmail.com>

Hello, geant4 experts. I am gathering elastic and inelastic cross section values using geant4(hadr03 example) for protons,neutron, and alpha. I have used TALYS program to compare the data for validation. For neutron, the output cross section value are very similar and so is for proton inelastic cross section on silicon. However, proton elastic cross section seems to differ greatly between these two.

Could someone explain which is correct or the reason for these difference? I am guessing because maybe the Hadr03 example doesn't include EM but when I do include EM by using a different physics reference list, the cross section value becomes wildly huge.

P.S. I've asked this few times already but alpha elastic doesn't show up in hadr03; if anyone could tell me why that'd be great also.

Thank you in advance!

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      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/08/11/22.10-83001-elastic_cross_section.PNG

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