Emission Mechanism of Optically Stimulated Luminescence in Copper-Doped Sodium Chloride Single Crystals

1 May 1993

journal article
Published by Oxford University Press (OUP) in Radiation Protection Dosimetry

Vol. 47 (1-4) , 293-296
https://doi.org/10.1093/oxfordjournals.rpd.a081754

Abstract

A remarkable optically stimulated luminescence (OSL) peak at about 353 nm and two less intense OSL peaks at about 420 nm and 680 nm are observed when the X irradiated copper-doped sodium chloride (NaCl:Cu) single crystal is stimulated with 470 nm light. The intense 353 nm OSL peak is attributed to the recombination of Cu²⁺ ions with electrons released from the F centre by optical stimulation with the F band light. The less intense 420 nm and 680 nm peaks are related to associates or complexes containing Cu⁺ and OH^- ions and Cu⁰_F centres, respectively. Since there is a good linearity between the 353 nm OSL intensity and the F band intensity over a wide range of X ray dose, it is important to prepare OH^- free NaCl which is homogeneously doped with Cu⁺ ions.

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