[en] Processes of producing autolocalized excitons and F-centers under effect of nanosecond duration electron flux pluse within 80-600 K temperature region in CaF₂ and LiF crystals are investigated by pulsed spectrometry methods with time resolution. It is shown that the production of F-H-pairs is an alternative to creating autolocalized excitons in a triplet state with temperature increase under irradiation. A comparative analysis of effectiveness of processes of creating elementary defects in the crystals investigated is given. 15 refs., 3 figs