|Message: Re: Neutron Angular Distribution with LElastic Model||Not Logged In (login)|
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To Vladimir Ivantchenko,
Thank you for your suggestion for the possible solution to the problem mentioned previously. My initial tests of the G4QElastic Process with the neutron scattering in my simulation have produced good results, and it appears that the angular distribution of the neutrons that scatter from the detector no longer has this strange peak that I mentioned in the previous message, although the shape of the angular distribution has changed from a exponetial distribution to a gaussian distribution. I assume this is a normal result with this model? (In fact, a gaussian shape is better for my application for comparison with results from other simulation programs...).
I have two other questions related to your response to the previous questions: First, is it perhaps better to use the Binary Cascade or Bertini Cascade models for the neutron inelastic scattering instead of the PreCompound model? (for neutrons between about 1 MeV ant 100 MeV?) You mentioned that the Binary Cascade model calls the PreCompound model at 30 MeV, but perhaps this only happens at low energy? As usual, I would like the inelastic scattering model that would be closest to "reality" so I was wondering when the Cascade models begin to be different than the PreCompound model?
Second, I was curious to know if there was any way to control the shape of the elastic scattering angular distribution in the G4QElastic model? Could a user, in principle, modify part of the code in the model to change the width of the Gaussian distribution or the shape?
Thanks again for your help, BrianR.
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