Effect ofV K centers on positron annihilation in KCl and Ag-doped KCl |
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| Authors: | F. H. Hsu W. C. Mallard J. H. Hadley Jr. |
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| Affiliation: | 1. Department of Physics, Georgia State University, 30303, Atlanta, Georgia, USA
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| Abstract: | Positron lifetime spectra have been measured at 77 K for KCl and Ag-doped KCl before and after x-irradiation at 77 K and after annealing at room temperature. Radiation at 77 K reduces the intensity of the intermediate lifetime (τ2) component. Radiation-induced defects were monitored optically and by ESR. The experiment shows that the changes observed in the positron decay are associated with the presence ofV K centers. |
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