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Conversion and equilibrium between F‐ and F 2 ‐centers in X‐irradiated KCl. II. Dynamic equilibrium experiments
Author(s) -
Seager C. H.,
Welch D. O.,
Royce B. S. H.
Publication year - 1972
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.2220500128
Subject(s) - irradiation , atmospheric temperature range , kinetic energy , thermodynamic equilibrium , equilibrium constant , dynamic equilibrium , thermodynamics , constant (computer programming) , range (aeronautics) , equilibrium point , radiation , materials science , atomic physics , physics , nuclear physics , quantum mechanics , computer science , composite material , programming language , differential equation
The temperature dependence of the dynamic equilibrium between F‐ and F 2 ,‐centers has been studied in KCl during X‐irradiation. Three distinct regions have been identified, a high temperature region corresponding in its temperature dependence of the equilibrium constant to the corresponding temperature range in additively colored crystals and two low temperature regions in which the equilibrium constant increases with increasing temperature with an apparent activation energy of 0.25 and 0.85 eV. A kinetic model is developed to explain these observations which involves the random creation of point defects by the radiation together with an enhanced creation probability near existing F‐centers.