Spectral characteristics of luminescence centers in alkali halide microcrystals

摘要

The experiments on the production of NaCl microcrystals with nickel impurity and double-doped (Ni, In and In, Ca) were carried out. The microcrystals were produced by salting out from aqueous solutions of a sodium salt. In salting out doping concentration did not exceed 1 mole%. The prepared samples were investigated by the luminescence spectroscopy. Spectral characteristics of luminescence of the samples and also changes in the characteristics under the action of ionizing radiation and in room-temperature storage of the irradiated samples were studied. Furthermore, changes in the spectral characteristics of luminescence of the irradiated samples were studied depending on storage period of the initial powder.