Luminescence of X-ray-Irradiated Single Crystals under the Influence of Compression

Abstract

Analyzing the data on bleaching with the F-light at the excitation bandpass 5 or 20 nm, it was found that the absorption spectrum of KCl:Eu2+ (0.1 mol%) single crystals exposed to X-ray has a peak due to Fz-centre within the wavelength 20 nm near F-centre peak. Deforming the X-ray-irradiated KCl:Eu2+ (0.02 mol%) single crystal by the compression at 100 𝜇m min−1, a new peak is observed around 330 K on the thermoluminescence (TL) glow curve. Its color centre has a new energy band near F-band, which is based on the F- and thermal-bleaching effects of the compressed crystal.