Branching Transport Model of Alkali-Halide Scintillators

Details Branching Transport Model of Alkali-Halide Scintillators Branching Transport Model of Alkali-Halide Scintillators

2007-05-25

arxiv.org/abs/0705.3703v1

Nucl.Instrum.Meth.A586:432-438,2008

Physics

Instrumentation and Detectors

Scientific paper

10.1016/j.nima.2007.12.010

We measure the time dependence of the scintillator light-emission pulses in NaI(Tl) crystals at different temperatures, after activation by gamma rays. We confirm that there are two main nonexponential components to the time decay and find that their amplitude ratio shows Arrhenius temperature dependence. We explain these nonexponential components as arising from two competing mechanisms of carrier transport to the Tl activation levels. The total light output of the NaI(Tl) detectors shows a linear temperature dependence explained by our model.

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