Effects of gamma ray strong irradiation in single crystal LiF

摘要

The electron spin resonance, transmission and reflection spectra showed that a steadily electron-type paramagnetic complex color point defect Fn center is produced by 60Co γ-ray strong dose irradiation in a single crystal LiF. The γ-ray irradiation dose is too large to recognize any character peak of F2, F2, F 2+, and F3 centers in the transmission and reflection spectra of the single crystal. LiF: F n is opaque when wavelength is shorter than about 750 nm and has not reflection when wavelength is shorter than about 800 nm. The Fn center has a wide ESR peak with ABpp of 8 millitesla and the effect g-factor is 1.998±0.002.