Thermal Bleaching of Cl2— Centers

15 May 1962

journal article
research article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 36 (10) , 2780-2782
https://doi.org/10.1063/1.1732365

Abstract

The kinetics of thermal bleaching of Cl₂^— centers in x‐irradiated KCl–Pb have been studied by measurement of the rate of disappearance of the 3650 Å optical absorption, at constant temperatures in the range 180° to 210°K. Thermal bleaching is second order in Cl₂^— concentration. A two‐part mechanism is suggested: the first being a diffusion of Cl₂^— via hopping of the positive hole from point to point through the lattice, the second being the recombination of holes with electrons trapped at lead ions. The activation energy for Cl₂^— center bleaching in KCl–Pb is 0.53 ev.

Keywords

This publication has 4 references indexed in Scilit:

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