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Forum: Hadronic Processes
Re: Question low energy neutron scattering problem
Re: Idea Re: low energy neutron scattering problem (Vladimir Ivanchenko)
Date: 26 Oct, 2012
From: <Santos>

Thank you for your response. As can be seen from the attached graphs, substituting

hadrPhysicsList.push_back( new HadronPhysicsFTFP_BERT()) (fig 1) or hadrPhysicsList.push_back( new HadronPhysicsQGSP_FTFP_BERT()) (fig 2)

for

hadrPhysicsList.push_back( new HadronPhysicsQGSP_BIC_HP())

made a small theta drop-off to start at smaller angles, and not as abruptly (although QGSP_FTFP_BERT smoothed the whole picture way too much), whereas, putting

hadrPhysicsList.push_back( new G4HadronInelasticQBBC()) (fig 3)

in its place, did not really change anything.

But in each case, the small angle drop-off is still present.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/10/26/09.11-53662-heta_g94_10Mftfp_bert.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/10/26/09.11-22267-g94_10Mqgsp_ftfp_bert.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/10/26/09.11-31275-theta_g94_10Mqbbc.png

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