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Question Stopping the decay of daughter nuclei 

Keywords: decay radioactive grdm/nucleusLimits macro
Forum: Particles
Date: 28 Jan, 2008
From: Jesse Angle <angle@phys.ufl.edu>

I wish to simulate the individual decays of the Uranium and Thorium 
chain as well as other radioactive decay chains.  I have been using 
the following macro under the assumption that the /grdm/nucleusLimits 
command would only decay the primary particle and would merely track 
the daughter while not decaying said daughter.  This is not happening, 
the daughters continue decaying until a stable isotope is reached.  
What do I need to modify in order to keep all daughter particles from 
decaying?


/Xe/generateCE  0
/Xe/saveHits 1
#
/Xe/printModulo 25000

# detector parameters
/Xe/detector/setTeflonReflectivity .95
/Xe/detector/setLXeScintillation 0
/Xe/detector/setLXeAbsorbtionLength 100. cm

# gun: particle
/Xe/gun/particle ion
/Xe/gun/ion 89 228 0 0
/Xe/gun/energytype Mono
/Xe/gun/energy 0 keV
/Xe/gun/type RandomIC

/grdm/nucleusLimits 89 89 228 228

/tracking/verbose 2
/run/verbose 2
/control/verbose 2
/run/beamOn 1

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