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Idea Re: More than two decay times 

Forum: Processes Involving Optical Photons
Re: Question More than two decay times (Paola Ferrario)
Re: Feedback Re: More than two decay times (Gumplinger Peter)
Date: 15 Oct, 2015
From: Michael H. Kelsey <Michael H. Kelsey>

On Wed, 14 Oct 2015 16:45:39 GMT, Gumplinger Peter wrote:
> Hi Paola,
> > Hi! I was wondering if it is possible to set three decay constants in
> > the scintillation process. As far as I have seen, there's the
> > SLOWTIMECONSTANT and the FASTTIMECONSTANT, and only one yield ratio
> > between them.
> No
> > I am trying to simulate the effect of recombination in
> > liquid xenon using a third slower time constant, with respect to the
> > fast (2.2 ns) and the slow (~27 ns), but maybe there's a clever way to
> > do that.
> One would have to extend the G4Scintillation class to three (or even
> more) decay constants. Perhaps, other users of liquid xenon
> scintillation have already solved your issue(?)

Paola may be interested in the NEST project (, which was developed for the LUX and LZ liquid xenon detectors.

  -- Michael Kelsey

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