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Question 70 keV X- ray Spectrum registered by Gd2O2S detector 

Forum: Analysis
Date: 23 Feb, 2010
From: Ibrahim <Ibrahim>

Dear all geant4 users,

I irradaiated the gadox (Gd2O2S) detector by photons of 70 keV. The Spectrum which I got is attached herewith. I used EM processes (Low Energy processes) to define my physics list,. but I am not happy with this spectrum because the photoelectric effect peak is too small. Does any body know why ? I appreciate your cooperation.

Kind regards

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/02/23/00.49-99083-Spectrum.pdf

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