Luminescent properties of CsI single crystals scavenged by additions of Y3+

doi:10.26565/2220-637X-2012-21-35

Victor L. Cherginec
T. P. Rebrova
Yu. N. Dacko
V. Yu. Pedash
R. P. Yavecky
S. V. Parkhomenko

DOI: https://doi.org/10.26565/2220-637X-2012-21-35

Keywords: cesium iodide, acids, yttrium chloride, X-ray luminescence, the decay of scintillation pulse

Abstract

The effect of Y³⁺ dopant on radioluminescence spectrum form and kinetics of scintillation pulse decay in CsI single crystals grown by Bridgman-Stockbarger method is studied. The increase of Y³⁺ concentration does not affect the position of the basic luminescence band of CsI (l_max=307 nm at Y³⁺ molality of 6.7·10^-4 mol∙kg^-1 and l_max=306 nm at Y³⁺ molality of 6.7·10^-3 mol∙kg^-1). The maximal fraction of 7-ns component of the scintillation pulse is achieved at Y³⁺ molality of 6.7·10^-3 моль·кг^-1 and it is equal to 0.65, whereas the fraction of slow 2 ms component does not exceed 0.02.

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References

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