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Forum: Hadronic Processes
Re: Question neutron reflection (Simone)
Re: Idea Re: neutron reflection (Vladimir Ivanchenko)
Date: 20 Jun, 2011
From: Simone <Simone>

Hello Vladimir,

thanks for your fast answer,

the interactions i get fot these neutrons are all HadronElastic, shouldn't neutron capture be labeled as "HadronInelastic" in the output? also the nuclei i get from the interaction are all Bi209[0.0] (i think i should expect Bi210 to be created from neutron capture)

also why all the interactions happen on the detector surface?

here below there is a piece of my output file: almost all neutrons experience an elastic scattering at the detector surface (the detector is 40 um thick, placed in 0,0,0)

evt_ID partic ID PID Ei(MeV) dE(MeV) Ei-Ef(MeV) ProcName VertexVolume CreatorProc X Y dTheta dPhi Z

3 neutron 1 0 0.1 0 0.0988013 HadronElastic expHall_log primary 0 0 104.478 151.386 0.0199551
4 neutron 1 0 0.1 0 0.0998086 HadronElastic expHall_log primary 0 0 36.7641 116.38 0.0199551
6 neutron 1 0 0.1 0 0.099667 HadronElastic expHall_log primary 0 0 48.4213 -64.7121 0.0199551
7 neutron 1 0 0.1 0 0.0996679 HadronElastic expHall_log primary 0 0 49.2979 11.3967 0.0199551
8 neutron 1 0 0.1 0 0.0990296 HadronElastic expHall_log primary 0 0 90.3751 -27.773 0.0199551
10 neutron 1 0 0.1 0 0.0984272 HadronElastic expHall_log primary 0 0 129.728 -67.4104 0.0199551

here there is an interaction inside the detector

426 neutron 1 0 0.1 0 0.0986306 HadronElastic expHall_log primario 0 0 114.98 -61.7926 0.0172887

I hope to have made myself more clear, thanks for your help


   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2011/06/20/02.39-33517-neutron_interaction.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2011/06/20/02.47-37620-sigmaPlot.png

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1 More: Re: neutron reflection   (Simone - 20 Jun, 2011)
2 Idea: Re: neutron reflection   (Vladimir Ivanchenko - 22 Jun, 2011)
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