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Question Particle artificially moved from one volume to another. 

Forum: Event and Track Management
Date: 03 Dec, 2008
From: alexandre Creusot <alexandre Creusot>

Hi,

  An optical photon is on the border between glass and vacuum, i.e. preStepPoint is in the glass and postStepPoint is in the vacuum. 
Via a created process, I move the postStepPoint back to the glass (position, momentum and time are changed).

  If I look at the step information, everything works fine... new momentum, new position and new time are the ones I wanted for the output photon. 
But before this output, I have a null size step in the glass (where I moved the photon) which is, I guess, 
needed by the manager to change the volume of the postStepPoint from vacuum to glass 
(actually the only thing changing in this step is the volume: from vacuum to glass, the rest has the output photon characteristics). 

  I would like to know if this change of volume has any influence on the photon characteristics. 
More generally, I would like to know if you can move freely a particle from one volume to another one.

Thanks a lot,

Alexandre Creusot.

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1 Warning: Re: Particle artificially moved from one volume to another.   (Gumplinger Peter - 03 Dec, 2008)
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