Formation of M Centers from ``Stored'' Photoelectrons
- 15 April 1967
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 46 (8) , 2896-2904
- https://doi.org/10.1063/1.1841151
Abstract
A process for producing M centers in additively colored KCl, by alternately bleaching F centers at − 120°C and warming up to about 0°C, is described. In undeformed crystals, M centers were formed only in samples in which an absorption at 600 mμ was observed as an intermediate. Plastic deformation enhanced the formation, in both KCl and KBr. M centers did not appear until temperatures well above the temperature of disappearance of F′ centers. A mechanism is proposed involving the migration of α centers to F centers; the F2+ centers thus formed are then neutralized by electrons released from the centers absorbing at 600 mμ.Keywords
This publication has 16 references indexed in Scilit:
- Electron Traps in Deformed Alkali Halide CrystalsThe Journal of Chemical Physics, 1966
- Diffusion of the Chlorine Ion in Potassium ChloridePhysical Review B, 1966
- Electron Traps in Colored KCl at —30°CThe Journal of Chemical Physics, 1964
- F-Aggregate Centers in Alkali Halide CrystalsPublished by Elsevier ,1964
- A study of M center formation in additively colored KClThe European Physical Journal A, 1963
- Thermal Production of-Aggregate Centers in KClPhysical Review B, 1963
- Structure and Properties of A-Centers in KClJournal of the Physics Society Japan, 1961
- Farbzentrenassoziate mit (100)-Symmetrie (A und B-Zentren)The European Physical Journal A, 1961
- Thermal Stability of the R, N and M Centres and the Oscillator Strength of the M Band of KCl CrystalJournal of the Physics Society Japan, 1959
- Migration barriers for cations and anions in alkali halide crystalsJournal of Physics and Chemistry of Solids, 1959