Computer Science
Scientific paper
Jul 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970e%26psl...8..420a&link_type=abstract
Earth and Planetary Science Letters, Volume 8, Issue 6, p. 420-426.
Computer Science
3
Scientific paper
Shock loading experiments have been carried out to determine the effect of dynamic pressures and associated temperatures on fission tracks in tektite (indochinite) and soda-lime glasses, biotite, and apatite. Below shock pressures of83 ± 4and31 ± 3kb, track densities remain unaltered in the tektite and soda-lime glass, respectively. In the tektite glass, partial and complete erasure of tracks is observed in samples recovered from112 ± 2and133 ± 10kb. In the soda-lime glass, partial erasure is observed in samples recovered from33 ± 3and42 ± 3kb. Shock temperature calculations indicate that the temperatures achieved upon shocking the glasses are appreciably lower than those at which tracks would be annealed out under static conditions. Single-crystals of apatite retain tracks when shocked to45 ± 5kb. apatite recovered from shock pressures above82 ± 5kb is granulated to micron-sized particles which preclude recognition of tracks. Single-crystal biotite specimens shocked to pressure up to173 ± 5kb show no appreciable loss in fission track density.
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