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Forum: Processes Involving Optical Photons
Re: None Scintillation Time of Creation & YIELDRATIO (Nick Calvert)
Date: 03 May, 2013
From: Gumplinger Peter <Gumplinger Peter>

Dear Nick,

> I appear to be only getting the slow time constant

> and no photons created with the fast time constant.

> Scint_MT->AddConstProperty("YIELDRATIO",1.0);

BINGO!

From the manual: The relative strength of the fast component as a fraction of total scintillation yield is given by the YIELDRATIO. You should be getting only the fast component and none of the slow component, opposite to your claim.

>In my tracking action I am histogramming the time of creation of the

>optical photons. I appear to get the same time histogram regardless of

>the value for YIELDRATIO. I have attached the histograms

I can't make sense of your attachement. Please, provide two separate histograms, one for YIELDRATIO=1 and one for YIELDRATIO=0.

> I was wondering why this was happening? Is it because I have specified
> the same scintillation spectrum for both components?

No, the spectrum has nothing to do with the timing.

Peter

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1 None: Re: Scintillation Time of Creation & YIELDRATIO   (Nick Calvert - 03 May, 2013)
1 Warning: Re: Scintillation Time of Creation & YIELDRATIO   (Gumplinger Peter - 13 May, 2013)
1 None: Re: Scintillation Time of Creation & YIELDRATIO   (Nick Calvert - 14 May, 2013)
2 None: Re: Scintillation Time of Creation & YIELDRATIO   (Athreya Shankar - 14 May, 2013)
1 Feedback: Re: Scintillation Time of Creation & YIELDRATIO   (Gumplinger Peter - 14 May, 2013)
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