Studies on F-band absorption of irradiated KCl single crystals excited with laser light

The absorption in the F-band of KCl single crystals after X-ray irradiation and subsequent excitation with laser light is studied. Similar investigations have been carried out when these crystals are subjected to high a.c. electric fields prior to X-ray irradiation and also at elevated temperatures. The effect of laser excitation on γ-ray irradiated samples is studied. An attempt is made to interpret the results in terms of the disorder that sets in in these crystals. (author)