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Forum: Physics List
Date: 30 Jun, 2009
From: Pradip Datta <Pradip Datta>

Hi all,

My simulated Ge detector is exposed to a mono energetic gamma source of 661.57 keV (like 137Cs). I have recorded the energy deposited in the detector. I got a spectrum. Every things looks okey but still I am not convinced!! Should there be any X-rays in the spectra. I saw one simulation result using Geant4. They r getting a strong peak ~ 191 keV. It may have that they used some material which emits some secondary gamma ray upon hitting by the primary gamma ray. I am attaching the .ps file of that spectrum. If anyone can advise me on this issue, it will be great help.

With best regards,



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1 Idea: Re: Is the attached spectrum correct?   (Vladimir Ivanchenko - 15 Jul, 2009)
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