Radiation coloring of undoped lithium fluoride crystals

The study results of the formation and agglomeration of color centers in undoped lithium fluoride crystals irradiated by the M-30 microtron (18 MeV) are presented. The optical absorption spectra of the irradiated samples were used to identify F-centers and their agglomerates, M-centers. The concentration of coloring centers of different grades was calculated using the well-known Smakula–Dexter equation. The increase in the concentration of absorbing centers with the irradiation fluence increase. The possibility of using the coloring centers for dosimetric studies is discussed: for low doses, the concentration of F-centers, and for high doses, respectively, M-centers.