Annealing of fission tracks in zircons |
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| Authors: | Tetsuaki Nishida Yoshimasa Takashima |
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| Institution: | Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Fukuoka Japan |
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| Abstract: | Etching conditions and thermal annealing effects have been studied for fission tracks in four kinds of zircons. The observation of fission tracks under an optical microscope was made with respect to the mean pit length as well as the mean pit density. Apparent rate constants were obtained by substituting the isochronal (60 minutes) annealing data into the ordinary equation of the rate constant. The order of reaction (almost 3rd or 4th) and the activation energy (1.7–2.9 eV) of annealing were determined from the Arrhenius plot of the apparent rate constants. |
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