Thermoluminescence Mechanism In Li2B407:Cu

Abstract

Samples of Li2O.2B2O3 doped with CuO have been produced by melting appropriate mixtures of Li2CO3 and H3BO3 at 980 oC and then quenching to room temperature. Glasses thus obtained were devitrified. The absorption spectra of non-irradiated and irradiated samples indicate that ? radiation changes Cu2+ into Cu+. ESR spectra of Cu-doped lithium borate exhibits the typical BOHC centres, 'five-line-plus-a-shoulder' between the ±¹/2Mn-lines. It is proposed that by heating the Cu-doped lithium borate, BOHC has an important role in the TL emission process.