PHOTOLYSIS OF SOLID Na⁺C222.Na^- BY AN EXCIMER LASER PULSE AT 308 nm

Abstract
Illumination of thin dry films of Na⁺C222.Na^- by short pulses of UV light at 308 nm produces modifications of the optical absorption spectrum similar to those obtained by visible light irradiation. These effects are interpreted in terms of transfer and recombination from the conduction band of the sodide. The quasi reversibility observed in the case of UV irradiation indicates that the process does not involve the 3s3p excited state. Deconvolution of the optical spectrum observed before and after the flash provides informations on the number of absorbing species. Preliminary results obtained with a variety of other sodides are shortly discussed.