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Keywords: optical photon wavelength shift
Forum: Processes Involving Optical Photons
Re: Question optical photon self-absorption in scintillator (Benton Pahlka)
Re: None Re: optical photon self-absorption in scintillator (Benton Pahlka)
Date: 17 Oct, 2006
From: Gumplinger Peter <Gumplinger Peter>

Hi Benton,

I am glad you could sort out your question on your own with the help of the extended/optical/LXe example. I wasn't 100% sure that a medium defined as a scintillator can also be defined as a WLS material at the same time. I thought so, but was not going to claim that without trying it myself.

> Warning: G4MaterialPropertyVector::GetProperty

> ==> attempt to Retrieve Property below range

You define ranges of optical photon properties which do not coincide with each other in their min/max limits; i.e. for example, you generate a photon in scintillation which is outside the range of WLS (absorption), or you have a WLS photon which is outside your bulk absorption limits etc. An optical photon, once generated must be inside the range of WLS absorption, bulk absorption, index of refraction, boundary effects etc. If it is not, the above warning is written and, in your case, the value of the property in the table at the low photon energy limit is used. So, no big worries. And since it happens so rarely, in your case, there is only a small not overlapping range. Still, I suggest you get rid of the warning by checking the range of all your properties.

Peter

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1 None: Re: optical photon self-absorption in scintillator   (Benton Pahlka - 18 Oct, 2006)
(_ Feedback: Re: optical photon self-absorption in scintillator   (Peter Gumplinger - 20 Oct, 2006)
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