Thermoluminescence and Color Centers in LiF:Mg

Autor:	Clifford C. Klick, Esther W. Claffy, James H. Schulman, Frank H. Attix, Steven G. Gorbics, James G. Allard
Rok vydání:	1967
Předmět:	F-Center Chemistry Excitation spectra General Physics and Astronomy Trapping Absorption (electromagnetic radiation) Luminescence Photochemistry Molecular physics Thermoluminescence Ion
Zdroj:	Journal of Applied Physics. 38:3867-3874
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1709032
Popis:	A variety of optical absorption, emission and luminescence excitation spectra have been measured in an attempt to identify the centers involved in the thermoluminescence of commercial LiF:Mg. It is concluded that the principal trapping centers consist of a hole trapped near various groupings of Mg2+ ions and vacancies. The optical absorption bands of these centers occur in the 3100–3800 A region which contains several absorption bands corresponding to different geometries of the centers. It is suggested that the 2200‐A band arises from Mg2+ ion‐vacancy complexes which have captured two holes. During thermoluminescence, holes are transported from traps to emitting centers. The luminescent center appears to be the F center both in an isolated position and when adjacent to a complex involving Mg2+ ions.
Databáze:	OpenAIRE
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