Abstract
Motivated by the urgent practical requirement of neutron detection, Ce3+-activated lithium borosilicate glasses consisting of 80 mol% lithium and boron mixtures with high neutron capture cross-section were synthesized by melt quenching method in air. The structures of lithium borosilicate glasses were revealed by both FTIR and Raman spectra. The effects of Li/B ratios on the optical properties, such as optical transmittance, photoluminescence, decay lifetime and radioluminescence (RL) were investigated in detail. It is found that the integrated emission intensity of Ce3+ ions can be enhanced by a factor of 13.5 and 1.2 under UV light and X-ray excitation, respectively. The developed Ce3+-activated lithium borosilicate glass is featured with the emission band centered at 350 nm and the lifetime within 25–30 ns, which shows promising application for thermal neutron detection.
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