Conference paper

Publication year: 1993

Pages: 273-277

Journal: Applied Radiation and Isotopes

Volume number: 44

Issue number: 1-2

ISSN: 0969-8043

Conference: 3RD INTERNATIONAL SYMP ON ESR ( ELECTRON SPIN RESONANCE ) DOSIMETRY AND APPLICATIONS

Publisher: Elsevier

Abstract: 
A model has been developed which generates the complex shapes of the experimentally observed production curves for aluminum-associated trapped hole centers in hydrogen-swept quartz. All of the aluminum ions are initially charge-compensated by an adjacent hydrogen ion (in the form of an OH-molecule). Radiation dissociates the hydrogen from the aluminum and forms two separate defects, a trapped hole center and an interstitial hydrogen atom. The hydrogen atom rapidly migrates along a c-axis channel and either (1) becomes trapped or (2) recombines with a hole center to restore the original lattice. Hydrogen atoms become trapped as di-interstitials (i.e., as H-2 molecules) in our model. Rate equations have been developed for this sequence of events, and computer-generated solutions are compared with experimental ESR data. A variation of this model in which the hydrogen atoms are assumed to be singly trapped did not agree with experiment.

Harvard Citation style: HALLIBURTON, L., HOFSTAETTER, A., SCHARMANN, A., SCRIPSICK, M. and EDWARDS, G. (1993) DOSE-RATE DEPENDENCE IN THE PRODUCTION OF POINT-DEFECTS IN QUARTZ, Applied Radiation and Isotopes, 44(1-2), pp. 273-277

APA Citation style: HALLIBURTON, L., HOFSTAETTER, A., SCHARMANN, A., SCRIPSICK, M., & EDWARDS, G. (1993). DOSE-RATE DEPENDENCE IN THE PRODUCTION OF POINT-DEFECTS IN QUARTZ. Applied Radiation and Isotopes. 44(1-2), 273-277.