Fission track annealing characteristics and dating of vermiculite |
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| Authors: | O P Sharma K D Bal H S Saini K K Nagpaul |
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| Institution: | 1. Department of Physics, Kurukshetra University, 132119, Kurukshetra, India
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| Abstract: | Fission track annealing experiments for vermiculite mineral have been performed under optimised etching conditions and a correction curve translating track length reduction to track density reduction has been constructed. The blocking/closing temperature of the fission track system in the mineral has been calculated to be 125°±30° C. The corrected fission track age of vermiculite from Kasipatnam (Visakhapatnam), South India, has been calculated as 544±14 Ma. The activation energy and average uranium concentration of the mineral are 1.7 eV and 9.9×10?8 gg?1 respectively. |
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