|Message: Re: Is it still valid when limiting electron step to micros?||Not Logged In (login)|
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On Mon, 18 Sep 2017 19:02:22 GMT, Yigong Zhang wrote:
> I don't know how to check. They are random walks. Check electron spatial > and energy distributions at certain distance away from the source? > > - Y >
I ran example TestEm1 with the attached macro. The histogram shows total track length of the primary e- with 3 step size : 10 um, 1 um, 0.1 um.
An additional comment : G4 penelope physics list do not use the original penelope multiple scattering, but the default Urban model, as G4 standard and livermore physics lists. Since multiple scattering is the dominant mechanism for e- at 1MeV (see pdf Screen Shot), the 3 families of Em processes must be more on less equivalent.
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2017/09/19/05.49-41965-yigong.mac.txt http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2017/09/19/05.49-6248-stepmax.gif http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2017/09/19/05.49-81360-017-09-19_at_12.03.51.pdf
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