|Message: Re: Scintilation from uncharge particles||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)|
> I'm simulating optical photons in a neutron detector. I've notice that I > have neutron trying to produce optical photons in geant4.9.6.
Are you telling me that you didn't see this in a previous version of Geant4? Though, nothing in this regard has changed from previous versions to 9.6.
> G4Scintillation::IsApplicable only rejects short-lived particles and > optical photons. It passes uncharge particles. Why don't it reject > uncharged particles like G4Cerenkov::IsApplicable? Is this a bug?
No, it is not a bug - it's deliberate! Neutral particles can generate charged particles that are below your production threshold. If they do, these charge particles are not tracked although their kinetic energy might be such that if they were tracked they'd generate scintillation photons. Since the kinetic energy of such a sub-production-cut charged particle is attributed as an energy loss of the primary neutral particle, neutral particles with energy loss in the medium MUST produce scintillation photons for the scint. yield to be correct.
Best regards, Peter