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Forum: Documentation and Examples
Re: Question A question on Unit in example rdecay01 (Clare Huang)
Date: 23 Dec, 2011
From: michel maire <michel maire>

On Thu, 22 Dec 2011 23:14:24 GMT, Clare Huang wrote:
> Hi all,
> 
> how's it going?! this may be an elementary question, but i was wondering
> if anyone can help me to straighten out the units in the example
> rdecay01 using geant4.9.4.p02.
> 
> Activity is caluclated as ActivPerMass*g/becquerel. again, there is a
> 6.242e30 constant to get the activity level printed below
> 
> Activity = 4.184e+13 Bq/g (1131 Ci/g)
> 
> can someone explain why? thanks a lot for your time and help in advance!
> 

  see :
 http://geant4.web.cern.ch/geant4/UserDocumentation/UsersGuides/ForApplicationDeveloper/html/ch03s03.html

 you may also have a look at SystemOfUnits.hh which is in
 geant4/source/externals/clhep/include/CLHEP/Units

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