|Message: Re: activity in Geant4||Not Logged In (login)|
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On Wed, 26 Nov 2014 10:12:11 GMT, Nur Aman wrote:
> Hello Dear all, > > I am a bit new for geant4, and I am simulating a PET scanner. I have one > question regarding to activity setting. Can run/beamOn is the same as > activity in Becquerel? that is, > > If I want I to simulate an activity of 1000 Bq (Becquerel), can this be > done using beamOn? i.e. > > is "beamOn 1000" is the same as "1000 Bq"?
Not exactly. beamOn is the number of atoms which will decay. Therefore it is the population at t=0 : N0 The relation is : N0 = activity*half_time_life/ln2 You must know the half_time_life of your isotope.
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