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Forum: Hadronic Processes
Re: None Gammas emitted only after ion stopped (RadioactiveDecay physics)
Re: None Re: Gammas emitted only after ion stopped (RadioactiveDecay physics) (michel maire)
Date: 12 Dec, 2012
From: <ljungvall@csnsm.in2p3.fr>

Hi again,

I've understood from where this problem comes. In

G4RadioactiveDecay::GetMeanFreePath

there is a check if the particle is stable or not. A ion created using /gun/ion is always stable... this is of course nonsense. I managed to work around this by forcing it to be unstable in my primarygeneratoraction class. However, I then lose the information about the lifetime of the state... so the first excited state will always have 0 lifetime.

Now, once the ion has stopped it is treated in a different way and subsequently decays

cheers

Joa

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1 None: Re: Gammas emitted only after ion stopped (RadioactiveDecay physics)   (Koi, Tatsumi - 12 Dec, 2012)
(_ None: Re: Gammas emitted only after ion stopped (RadioactiveDecay physics)   (ljungvall@csnsm.in2p3.fr - 13 Dec, 2012)
(_ None: Re: Gammas emitted only after ion stopped (RadioactiveDecay physics)   (ljungvall@csnsm.in2p3.fr - 13 Dec, 2012)
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