Some-Band Optical Oscillator Strengths in Additively Colored Alkali Halides
- 1 February 1957
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 105 (3), 914-920
- https://doi.org/10.1103/physrev.105.914
Abstract
The number of magnetic centers in alkali halides additively colored in the alkali vapor has been determined by measuring the static magnetic susceptibility. Curie's law is followed, and the measurements have been extended to liquid helium temperatures to increase the sensitivity. The number of centers is compared with the optical absorption of the band. Under the assumptions that the -center electron wave function depends parametrically upon the coordinates of the surrounding nuclei, the electric dipole matrix element is independent of the nuclear coordinates, and the electric field at the electron is the Lorentz local field, the optical oscillator strengths for a Lorentz, Gaussian, and observed line shape are determined. The average for a series of experiments yield for KCl, for KBr, and for KI. Values for CsBr and NaCl are discussed.
Keywords
This publication has 17 references indexed in Scilit:
- Susceptibility and Entropy ofF-Centers in Alkali Halides below 1°KPhysical Review B, 1956
- Color Centers in Alkali Halide Crystals. IIReviews of Modern Physics, 1954
- Electronic Structure ofCenters: Hyperfine Interactions in Electron Spin ResonancePhysical Review B, 1953
- Magnetic Susceptibility of Colored Potassium Chloride from 1°K to 300°KPhysical Review B, 1953
- The Franck-Condon Principle and Its Application to CrystalsThe Journal of Chemical Physics, 1952
- Paramagnetic Resonance Absorption in Crystals Colored by IrradiationPhysical Review B, 1949
- Die magnetische Suszeptibilität von Kaliumbromidkristallen mit FarbzentrenAnnalen der Physik, 1939
- Electron conductivity and photochemical processes in alkali-halide crystalsProceedings of the Physical Society, 1937
- Zur Messung der Zahl der Farbenzentren in KCl‐KristallenAnnalen der Physik, 1936
- Über Erregung und Entfärbung lichtelektrisch leitender AlkalihalogenideThe European Physical Journal A, 1930