27 August 2015 Negative temporal cross covariance in SrI2:Eu
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Abstract
Scintillation light is widely believed to be Poisson or super-Poisson. We tested this hypothesis by measuring the temporal correlation between two detectors detecting scintillation light resulting from the same gamma-ray event in SrI2:Eu . Poisson light is expected to yield zero temporal correlations, while super-Poisson light is expected to yield positive, and sub-Poisson light is expected to yield negative temporal correlation. Scintillation light in SrI2:Eu was found to be negatively correlated. Therefore, we conclude that the scintillation light in SrI2:Eu is sub-Poisson.
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Vaibhav Bora, David Fastje, Harrison H. Barrett, Eric Clarkson, Lars Furenlid, Kanai S. Shah, Urmila Shirwadkar, "Negative temporal cross covariance in SrI2:Eu", Proc. SPIE 9595, Radiation Detectors: Systems and Applications XVI, 959504 (27 August 2015); doi: 10.1117/12.2214406; https://doi.org/10.1117/12.2214406
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