Off-campus UNL users: To download campus access dissertations, please use the following link to log into our proxy server with your NU ID and password. When you are done browsing please remember to return to this page and log out.
Non-UNL users: Please talk to your librarian about requesting this dissertation through interlibrary loan.
COLORATION OF POTASSIUM-CHLORIDE: HYDROXIDE BY ULTRAVIOLET LIGHT
Abstract
KC1:OH crystals are colored with ultraviolet light in the OH band at temperatures between 193°K and 299 K.The F-band growth curves exhibit an early-stage coloration which reaches a maximum after a few hundred seconds and then decays upon continued irradiation. Further irradiation can produce a late-stage coloration. If this late-stage coloration overcomes the decay of the early-stage coloration, it produces an inflection in the F-band growth curve.The early-stage coloration is interpreted as an OH F conversion resulting in many F centers which are particularly unstable due to their proximity to other OH™ decomposition products and soon either revert back to OH or form U and other centers. The decay in the F-band growth curve occurs when the rate of production of the early-stage F centers below their rate of bleaching. The late-stage coloration is associated primarily with a UF conversion. Mathematical models consistent with the gross behavior of the F-band growth curves are proposed.
Subject Area
Condensed matter physics
Recommended Citation
BRADLEY, WENDELL GAYLE, "COLORATION OF POTASSIUM-CHLORIDE: HYDROXIDE BY ULTRAVIOLET LIGHT" (1970). ETD collection for University of Nebraska-Lincoln. AAI7103632.
https://digitalcommons.unl.edu/dissertations/AAI7103632