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Question decay of Cs-137 using radioactive exrdm-example 

Keywords: radioactive decay
Forum: Documentation and Examples
Date: 05 Oct, 2006
From: Victor Golovko <>


I am trying to simulate decay of Cs-137 using radioactive exrdm-example from geant. According to the NNDC decay data for Cs-137, one would expect monoenergetic electron lines at energies of 624 keV and 656 keV (if one do not take into account Auger electrons). In simulated emission decay spectra of Cs-137 that have been produced by GEANT4 I see also monoenergetic electron at energy around 661 keV.

What is the origin of these electrons?

Best wishes,


October 5, 2006

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