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Keywords: optical photon reflections
Forum: Processes Involving Optical Photons
Date: 30 Jan, 2004
From: Makoto Asai <Makoto Asai>

Instead of checking materials between pre- and post-stepPoint,
I would suggest to check the step status. If the step status is
"fGeomBoundary", that particular step was limited by the 
transportation process at the volume boundary.

 G4StepStatus st = theStep->GetPostStepPoint()->GetStepStatus();

To check whether a particular process was involved to the step
or not (I'm not talking about a process which limits a step),
I would suggest you to visit our tips page.
 http://geant4.slac.stanford.edu/Tips/index.html
Tip #6 in Event & Track section would help you.

Thus, if
1) the step was limited by the transportation process, and
2) optical process was involved to the step,
then follow the Peter's suggestion to get the status of
the optical process.

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1 Ok: Merci bien for Peter and Makoto.   (Igor Machulin - 02 Feb, 2004)
2 Feedback: Re: How to obtain the number of photon reflections?   (Peter Gumplinger - 02 Feb, 2004)
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