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Forum: Hadronic Processes
Re: None Gammas emitted only after ion stopped (RadioactiveDecay physics)
Date: 17 Sep, 2012
From: michel maire <michel maire>

On Tue, 11 Sep 2012 13:04:14 GMT, joa wrote:
> Hi all,
> 
> I have a problem... of course writing to this forum;) I create an ion,
> in this case a 170Os in an excited state (3707 keV). I set a user
> defined decay file (decay170Os) full of IT to fool geant4 to send out
> gammas as if then nucleus where deexciting as it should. Now, if I start
> with a 170Os at rest, the gammas are emitted according to the lifetimes
> I've given in decay170Os. However, if I shoot the ion with some energy,
> in this case 30 MeV, the ion has to stop before the gammas are emitted.
> The stopping time is in the order of 100 ns, a factor 1000 more than the
> lifetimes... Any ideas?
>

 In rdecay01 the medium is 2 um of air. This is a trick to select single decay or full chain mode. The primary ion is supposed to be at rest. If you wish to give him an energy, increase the size of the medium.

     Michel

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