Abstract
Mössbauer effect measurements are reported with sources of radioactive 133Xe implanted in platinum at 100 and 300 K. Information about the nearby environment of an implanted probe atom is obtained through the hyperfine interaction of the daughter nucleus 133Cs with its surroundings. The sources are subjected to an isochronal annealing sequence in order to study the recovery of the radiation damage in platinum. Five different components are visible in the Mössbauer spectra. Those are associated with substitutional Xe atoms and Xe atoms which have trapped one, two, three and four or more vacancies. Vacancy trapping at the Xe impurities occurs around 300 and 400 K. We ascribe this to the free migration of divancies and monovacancies, indicating that this recovery stage in platinum is due to vacancy migration. Around 550 K dissolution of interstitial clusters is observed and around 700 K vacancy loops start dissolving.
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