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Forum: Processes Involving Optical Photons
Re: Question Implemeting non-linearity to light yield (Malachi Schram)
Re: Agree Re: Implemeting non-linearity to light yield (Gumplinger Peter)
Re: Warning Re: Implemeting non-linearity to light yield (Gumplinger Peter)
Re: None Re: Implemeting non-linearity to light yield (Malachi Schram)
Date: 09 Mar, 2011
From: Gumplinger Peter <Gumplinger Peter>

Dear Malachi,

> >G4double nai_ly=38./keV;
>
> Thank you for catching this mistake!!! I owe you one:)
>   

No, I owe you one because if our(my) documentation was better it would be explained that the yield that needs to be given at the deposited energy is the absolute yield contrary to the other cases.

> In addition, I can send you my code to be added as an example. Let me know if 
>this would be useful.

Yes, sure!

In case it helps you in your work, a little while ago I found those two links for NaI(Tl):

http://www.springerlink.com/content/l546418364711037/fulltext.pdf

http://www.detectors.saint-gobain.com/uploadedFiles/SGdetectors/Documents/Product_Data_Sheets/NaI(Tl)-Data-Sheet.pdf

I should also point out that when you give the non-linear light yield, your binning should be relatively fine (even spline interpolate your data to obtain extra points) because the interpolation in G4MaterialPropertiesVector is only linear and you get poor results if you specify your spectrum with only a few points. This will be fixed in the next G4 release.

Peter

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1 None: Re: Implemeting non-linearity to light yield   (Malachi Schram - 11 Mar, 2011)
(_ Ok: Re: Implemeting non-linearity to light yield   (Gumplinger Peter - 11 Mar, 2011)
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