|Message: Co60 and Cs137 spectra||Not Logged In (login)|
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I had a problem when I want to plot the Co-60 and Cs 137 spectra. If I place my source at least at 3cm from the detector, the spectra are what I was expected, but when I place the source in the contact of the detector, I got the spectra attached here.
Can anyone , has an idea what's wrong with my simulation? Thank you for your help
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2011/09/12/04.17-42992-Cs_137.png http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2011/09/12/04.17-7393-co_60.png