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Re: Question Time Biasing - Forced Nuclear Decays (Cenk Turkoglu)
Date: 19 May, 2016
From: Cenk Turkoglu <Cenk Turkoglu>

Let me give me an example of what I want to do: I am trying to force U238 isotope to decay immediately after the simulation begins. I use the files named bias.data and beam.data that can be found in /geant4.10.2-install/share/Geant4-10.2.0/examples/extended/radioactivedecay/rdecay02/macros . I achieved the isotopes to decay immediately but the energy spectrum looks strange. The result that I get can be seen on the plot.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/05/19/08.04-58067-238U_phonon_.png

What I expect is a peak at the Q-Value of the isotope which is 4269 keV for this case but what I see are the lines attributed to the alpha lines of the isotope. My impression is that I miss the de-excitation of the daughter isotope. Do you think I am missing something here? I would be glad to hear your thoughts and your suggestions for a solution to this problem.

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