Fast u.v. scintillations in CsI-type crystals

A study of the spectral and kinetic ultraviolet luminescence in pure CsI crystals has been carried out over a wide range of temperatures and excitation conditions. The presence of homological impurities in CsI crystals has been found to result in a long-wave shifting of the luminescence band and shortening of the decay time. The most probable nature of high-temperature luminescence in CsI crystals is discussed. The main problems concerned with the creation of large size radiation-stable scintillators for high-energy and nuclear physics are described. (author)