ENERGY-TRANSFER FROM COLOR-CENTERS TO THE DOPANT IN ALKALI-HALIDES

Energy transfer from F centres to the dopant ions in photostimulated p rocesses is examined. It was found that in alkali halide systems the r adiation defects are disposed in near vicinity of the dopants. Recombi nation of defects also takes place to a limited extent near the dopant with a fast and high-yield energy transfer to the latter. Role of unr elaxed H centres in the formation of donor-acceptor pairs is discussed . Some special exciton energy transfer mechanisms are analysed as well .