Message: Gammas emitted only after ion stopped (RadioactiveDecay physics) Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None Gammas emitted only after ion stopped (RadioactiveDecay physics) 

Forum: Hadronic Processes
Date: 11 Sep, 2012
From: <ljungvall@csnsm.in2p3.fr>

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?

I include a modified PhysicsList.cc && PhysicsList.hh for rdecay01 example that reflects the physics list I'm using, and also includes the 170Os decay file.

kind regards

Joa

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/09/11/06.02-91982-PhysicsList_cc.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/09/11/06.01-37349-runlog.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/09/11/06.02-82684-decay170Os.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/09/11/06.02-88562-Os170_mac.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2012/09/11/06.03-95004-PhysicsList_hh.txt

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 None: Re: Gammas emitted only after ion stopped (RadioactiveDecay physics)   (michel maire - 17 Sep, 2012)
2 None: Re: Gammas emitted only after ion stopped (RadioactiveDecay physics)   (michel maire - 18 Sep, 2012)
1 None: Re: Gammas emitted only after ion stopped (RadioactiveDecay physics)   (ljungvall@csnsm.in2p3.fr - 12 Dec, 2012)
(_ 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)
 Add Message Add Message
to: "Gammas emitted only after ion stopped (RadioactiveDecay physics)"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]