The luminescence spectra of AgCl microcrystals were measured in two different regimes: in the regime of excitation of stationary luminescence and in the regime of photostimulated burst of luminescence. Differences between the spectra of stationary luminescence and the spectra of photostimulated-luminescence burst in the range between 430 and 590 nm have been found. The luminescence spectra are complex; the ratio of intensities for elementary components changes with the technique of excitation. Differences in the form and composition of complex luminescence bands obtained under different conditions of registration are attributed to the recombination interaction of the luminescence centers. It is shown that analysis of the dependences of intensity ratios for the elementary components of a complex luminescence band on the exciting-radiation intensity allows one to evaluate the mechanism of recombination in elementary bands provided that the mechanism is known for at least one luminescence band.Keywords: luminescence, recombination centers, burst of luminescence, mechanism of recombination, center of localization of electrons.Introduction. In studying the luminescent properties of silver chloride by the method of photostimulated burst of luminescence (PSBL), a difference was observed between the luminescence spectra measured in the regime of stationary excitation and the luminescence spectra measured in the regime of stimulation of a burst of luminescence within the range from 430 to 590 nm at a temperature of 77 K [1]. These differences in the luminescence bands were not studied in detail and were only mentioned as being observed. It should be noted that the main quantity measured experimentally in the PSBL method is the so-called light sum of the burst of luminescence, which is proportional to the number of charge carriers that recombined in the process of irradiation by more longwave (IR) radiation from the crystal previously excited by more shortwave (UV) radiation [2]. In the luminescent methods usually used, the structure of luminescence centers and the mechanisms of recombination in them are usually judged from the spectra of stationary luminescence [3]. The dependence of the shape of the luminescence spectra on the technique of excitation and stimulation indicates that the classical luminescence spectra must not be interpreted unequivocally, because the shape of the luminescence spectra depends on many factors such as the probability of capturing nonequilibrium charge carriers at the luminescence impurity centers, the probability of the recombination of charges at these centers, the probability of the release of the charge carriers from luminescence centers, and the method of registration. It is important also to take into account the recombination interaction of different kinds of luminescence centers that are influenced by the above-listed parameters.Experimental. The luminescence spectra of silver chloride microcrystals were measured within the range of wavelengths from 430 to 590 nm at a temperature of 77...