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Empirical Relationships for the Emission Energies and Lifetimes of the F‐Center
Author(s) -
Gilbert R. L.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680300121
Subject(s) - center (category theory) , atomic physics , dielectric , halide , helium , liquid nitrogen , liquid helium , f center , chemistry , physics , electron , nuclear physics , quantum mechanics , crystallography , inorganic chemistry
Empirical relations for the emission energies ϵ of the F‐center in the Na, K, Rb, and Cs halides, and for the lifetimes τ have been established with the following forms:\documentclass{article}\pagestyle{empty}\begin{document}$$ \varepsilon = A\,K_o^n $$\end{document} and\documentclass{article}\pagestyle{empty}\begin{document}$$ \tau = A'K_o^{n'},$$\end{document} where K o is the optical dielectric constant. Two different relations appear to exist for τ. One follows from measurements of τ at liquid helium temperature, the other follows from τ extrapolated from measurements above liquid nitrogen temperature with the Swank‐Brown curve. The implications of the existence of these curves are discussed.