Open AccessЭлектрон-фононное взаимодействие центров окраски с бесфононной линией 436.55 nm в кристаллах LiF-O, OH
Author(s) -
Л.И. Щепина,
Р.Ю. Шендрик,
Т.С. Лазарева
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2020.05.49320.342-19
Subject(s) - phonon , absorption (acoustics) , spectral line , materials science , absorption spectroscopy , crystal (programming language) , lattice (music) , line (geometry) , coupling (piping) , absorption band , irradiation , electron , atomic physics , f center , molecular physics , optics , chemistry , condensed matter physics , physics , geometry , mathematics , quantum mechanics , astronomy , computer science , acoustics , metallurgy , composite material , programming language , nuclear physics
Absorption spectra were recorded at 7.2–300 K at a LiF-O, OH crystal irradiated and UV. The coupling force (S) with the phonons of the lattice of an electron-vibrational transition with a zero-phonon line of 436.55 nm was determined from the ratio of the intensities in the zero-phonon line and the integral absorption band. The nature of the color center responsible for the absorption band at 390 nm and emission 490 nm is determined from the value of S.