|Message: Antineutron interactions with matter at very low energies||Not Logged In (login)|
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I've been studying interactions of antineutrons with matter and I've found that there are some problems with antineutron's physics at very low energies: for antineutron's momentum less than 150 MeV/c. I've attached a plot with data on antineutron's total cross section to show you what I am talking about. This picture presents a comparison between Geant4 results and OBELIX experimental results. RED points - Geant4, BLUE points - experiment. It seems like something is missing in Geant4 physics for antineutrons at low energies. These data were obtained with the use of LHEP_HP physics with G4NDL3.12 cross sections database. I've also tried other available HP physics, but the results are all the same. I'll highly appreciate any ideas in solving this issue.
P.S. Geant's version is 4.8.2
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2008/11/26/20.38-93810-crs.eps http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2008/11/26/20.38-81666-crs.png
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