Re: Optical photons

From: Paola Sala <>
Date: Fri, 25 May 2012 12:23:39 +0200 (CEST)

Hello Joe
a late answer..
no, there is no competition. I just checked, enabling both cere and scint
gives the sum of the optical photons generated in the two processes.
However, the yield of cherenkov photons can b very small with respect to
scintillation ones, to the point of being undetectable.
> I am studying the propagation of optical photons through a CsI(pure)
> detector crystal, for both high-energy photons and other particles (e.g.,
> neutrons), to look at timing distributions as they go out the end.
> A question. Is there a priority between Cherenkov production and
> scintillation? In a test case, each process alone produces different
> numbers of exiting optical photons. But if both processes are 'on,' the
> results are the same as for scintillation alone. Both processes are
> focussed on the 315-nm line, the maximum of the distribution.
> Joe Comfort

Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
Received on Fri May 25 2012 - 23:35:28 CEST

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