ACTINOMETRIC THERMOLUMINESCENCE RESPONSE OF KCL1-XBRX-EU2-CRYSTALS( MIXED)

Europium-doped KCl1-xBrx mixed crystals have been studied as a selecti ve ultraviolet (UV) detector material in the actinometric region (200- 300 nm). Thermoluminescence glow curves of room-temperature UV-irradia ted samples were analyzed as a function of composition x and irradiati on wavelength. A thermoluminescence enhancement, relative to the pure KCl and KBr end components is found; for 210-300 nm irradiation the KC l40Br60:Eu2+ solid solution presents a significant increase in thermol uminescence efficiency. (C) 1996 American Institute of Physics.