A STUDY OF THE OPTICAL AND MECHANICAL-PROPERTIES OF PBWO4 SINGLE-CRYSTALS

Optimised growth conditions were employed to grow good quality lead tu ngstate single crystals. Data were obtained on the optical absorption and radiation damage. Radiation-induced optical damage was found to be more for yellow-tint crystals than for colourless crystals. Samples c ut from different portions of the crystal were analysed with photolumi nescence studies which showed quality-dependent intensity variation. T hermoluminescence measurements made on gamma irradiated crystals showe d different type of glow curves for different samples. An investigatio n was also made to determine the mechanical hardness of the material. (C) 1998 Published by Elsevier Science B.V. All rights reserved.