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Idea Re: Positron backscattering 

Forum: Physics List
Re: None Positron backscattering (Luca Ravelli)
Re: Idea Re: Positron backscattering (Vladimir Ivanchenko)
Re: Idea Re: Positron backscattering (Vladimir Ivanchenko)
Re: None Re: Positron backscattering (Luca Ravelli)
Date: 07 Mar, 2014
From: Vladimir Ivanchenko <Vladimir Ivanchenko>

Hello,

In the release 9.4 Livermore and Penelope physics lists use G4SoudsmithSaundersonModel of multiple scattering. It is well known that this model provide the best backscattering results. Unfortunately, this model has serious problem in forward direction and we still do not improve it. So, since 9.5 we are using G4UrbanMscModel in our Physics Lists. To increase accuracy of your simulation you may try following UI command :

/process/msc/RangeFactor 0.01

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