Message: Re: Geant4 Decay File 'Intensity' Column meaning? Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None Re: Geant4 Decay File 'Intensity' Column meaning? 

Forum: Particles
Re: Question Geant4 Decay File 'Intensity' Column meaning? (Giuseppe Caporaso)
Date: 08 Jun, 2018
From: michel maire <michel maire>

On Thu, 07 Jun 2018 01:58:18 GMT, Giuseppe Caporaso wrote:
> Hi all,
> 
> I'm trying to simulate the photon decay spectrum of Eu155 in Geant4. I
> made a plot of geant4's resulting spectra from using /gps/ion <Z> <A>
> (the plot also shows what the spectrum should approximately look like)
> and it doesn't match up frequency wise with what other literature
> states. I've attached all these.
> 
> What I want to know is how the intensity column works and how to adjust
> it such that the fractional decays of the photons aligns with the
> literature.
> 
> From what I can gather so far, the intensity listed in the G4 Decay file
> is the probability of reaching that excited Gd155 State. So then how do
> the photon probabilities factor in? I feel like this situation would
> similarly apply to other radioactive isotopes, did anyone encounter this
> and possibly find a work around?
> 
> So far my work around has been 'trial and error' i.e put in all the
> photon energies and guess intensity numbers until the spectrum comes out
> how I want it to. As you can imagine its quite laborious and
> unpredictable. I've attached that file too (Eu155_z63.a155).
> 
> Any help is greatly appreciated.

> 
 The file RadioactiveDecay/z63.a155 contains informations for beta decay of Eu155 on various excited states of Ga155
 Deexitation of such states is governed by the file PhotonEvaporation/z64.a155
 I suggest you to run example rdecay01 with attached macro and fullChain false or true
     Michel

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/06/08/14.46-97981-Eu115.mac.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/06/08/14.46-37350-Eu155.gif

 Add Message Add Message
to: "Re: Geant4 Decay File 'Intensity' Column meaning?"

 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 ]