|Message: Re: Backscattering Validation||Not Logged In (login)|
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On Fri, 31 Oct 2014 09:06:46 GMT, A. Hod wrote:
> Dear all, > > I calculated the coefficient of backscattered electrons from silicon, > carbon, aluminum and gold layers of 200 um thickness with Geant4. The > calculated backscattered coefficients are: > > Backscattering coefficient n= number of scattered primary > electrons/number of incident electrons. > > Carbon (Z=6): n= 10.81% > > Aluminium(Z=13): n=19.09% > > Silicon(Z=14): n=21.30% > > Gadolinium (Z=64): n=46.02% > > Gold (Z=79)= n=49.11% > > Additional information: > > Physics model: low energy EM physics (Livermore model) > > Layers: 1mm x 1mm x 0.2 mm > > Cut= 1 um > > Energy of normally incident electrons: Ee=300 keV > > I would like to validate my calculation. Could you please suggest some > references concerning the calculation of the backscattered electron > coefficient? Thanks in advance and I kindly welcome your cooperation.
In example TestEm5 you will find a file references.txt However, this file has not been updated since a long time.
ps. I ran TesEm5 with the attached macro. I got results somewhat different of you : Carbon ~ 3.4% Aluminium ~ 12.2% Silicon ~13.4% Gadolinium ~ 43% Gold ~ 48%
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/10/31/07.28-63451-hode.mac.txt http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/10/31/07.28-90020-Aluminium.out.txt