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Erasure of fission tracks in glasses and silicates by shock waves

Ahrens, Thomas J. and Fleischer, Robert L. and Price, P. Buford and Woods, Richard T. (1970) Erasure of fission tracks in glasses and silicates by shock waves. Earth and Planetary Science Letters, 8 (6). pp. 420-426. ISSN 0012-821X. https://resolver.caltech.edu/CaltechAUTHORS:20150210-152040091

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Abstract

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 of 83 ± 4 and 31 ± 3 kb, 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 from 112 ± 2 and 133 ± 10 kb. In the soda-lime glass, partial erasure is observed in samples recovered from 33 ± 3 and 42 ± 3 kb. 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 to 45 ± 5 kb. apatite recovered from shock pressures above 82 ± 5 kb is granulated to micron-sized particles which preclude recognition of tracks. Single-crystal biotite specimens shocked to pressure up to 173 ± 5 kb show no appreciable loss in fission track density.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0012-821X(70)90145-7DOIArticle
http://www.sciencedirect.com/science/article/pii/0012821X70901457PublisherArticle
Additional Information:© 1970 North-Holland Publishing Company. Published by Elsevier B.V. Received 1 May 1970, Available online 28 October 2002. This research was supported at the California Institute of Technology and General Electric Research Laboratory under NGL 05-002-105 and NAS 9-7898, respectively. We appreciate the contribution F. Horz and D. Tanner made to the experiments and G. Davics made to the calculations. We thank R. M. Chrenko (GERL) for carrying out the infrared measurements.
Funders:
Funding AgencyGrant Number
NASANGL 05-002-105
NASANAS 9-7898
Issue or Number:6
Record Number:CaltechAUTHORS:20150210-152040091
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150210-152040091
Official Citation:Thomas J. Ahrens, Robert L. Fleischer, P. Buford Price, Richard T. Woods, Erasure of fission tracks in glasses and silicates by shock waves, Earth and Planetary Science Letters, Volume 8, Issue 6, July 1970, Pages 420-426, ISSN 0012-821X, http://dx.doi.org/10.1016/0012-821X(70)90145-7. (http://www.sciencedirect.com/science/article/pii/0012821X70901457)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54666
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:11 Feb 2015 17:30
Last Modified:03 Oct 2019 07:59

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