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Temperature dependence of the light yield in scintillators

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Aug12-14, 02:24 AM
P: 63

I have a question regarding the temperature dependence of the light yield in scintillators.

I will attach a figure from the book by Glenn F. Knoll,

So the question is, what is causing the reduction in light yield with high temperatures, when the decay time for the scintillation light is reduced with higher temperatures?

I would have guessed that the reduction of decay time for the scintillation light would increase the light yield, not the opposite.

Now, I am familiar that "noise" is increased with higher temperatures, I just cant explicate the answer.

Thank you
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Greg Bernhardt
Aug17-14, 07:38 PM
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P: 9,709
I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
Aug18-14, 12:32 AM's Avatar
P: 234
Interesting! My copy of Knoll has several references discussing that there are several competing mechanisms causing this temperature dependence - maybe you should check them out?

I found this paper: which presents a model for this dependence - Self-Trapped Excitons reaching the Tl+ by thermal assisted hopping.

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