|Message: Re: Geant4 Decay File 'Intensity' Column meaning?||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
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