EFFECTS OF OH^(-) IONS ON THE FORMATION AND THERMAL DECAY PROPERTIES OF F-AGGREGATE CENTERS IN LIGHTLY DOPED LiF: OH^(-)

Under identical irradiation conditios,higher concentrations of F_(2)^(+),F_(2)^(-), and F_(2) centers in lightly doped LiF:OH^(-) than in pure LiF are found,but thermal stability of OH^(- ) center in these two samples is almost the same.Products of OH^(- )decomposition play an important roles in the formation and thermal decay processes of these F-aggregate centers。