caa a22 4500 477060420 CHVBK 20180405111358.0 cr unu---uuuuu 170330e19961101xx s 000 0 eng 10.1007/BF02436149 doi (NATIONALLICENCE)springer-10.1007/BF02436149 Lisitsyna L. aut Laws governing the creation of electronic color centers in LiF crystals acted on by pulsed irradiation [Elektronische Daten] [L. Lisitsyna] The processes of creating and transforming electronic color centers in an LiF crystal irradiated with a nanosecond electron pulse are investigated using pulse spectrometry with nanosecond resolution for times in the range 10−8 to 105 sec. It is shown that the thermally activated mechanism of forming Frenkel pairs in the 12-200 K range consists of successively creating exciton states, as the temperature rises, having different degrees of spatial separation of the electron and hole components. It is concluded that the structure of self-trapped excitons evolves as a function of temperature and time, and that this evolution commences for any alkali halide crystal with the creation of self-trapped excitons ofD 2h point symmetry at 4 K. It is established that the interaction of electronic excitations with electronic color centers changes the properties of both the electronic excitations themselves and the color centers. In a crystal containing neutral electronic centers there is a fall in the yield of self-trapped excitons and Frenkel pairs and an increase in the contribution of the radiative channel for loss of the irradiation energy by the color centers. A mechanism is proposed for exciting luminescence of electronic color centers. It is established that short-lived irradiation-induced states exist, in particular a change in the spin state or in just the energy state of a center in the irradiation field, and that the appearance of these states changes the efficiency and directivity of the charge evolution of the electronic color centers. Plenum Publishing Corporation, 1997 Russian Physics Journal Kluwer Academic Publishers-Consultants Bureau 39/11(1996-11-01), 1050-1066 1064-8887 39:11<1050 1996 39 11182 https://doi.org/10.1007/BF02436149 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02436149 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Lisitsyna L. aut NATIONALLICENCE 773 0- Russian Physics Journal Kluwer Academic Publishers-Consultants Bureau 39/11(1996-11-01), 1050-1066 1064-8887 39:11<1050 1996 39 11182 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer