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Shock compression of diamond crystal

Kondo, Ken-ichi and Ahrens, Thomas J. (1983) Shock compression of diamond crystal. Geophysical Research Letters, 10 (4). pp. 281-284. ISSN 0094-8276. doi:10.1029/GL010i004p00281.

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Two shock wave experiments employing inclined mirrors have been carried out to determine the Hugoniot elastic limit (HEL), final shock state at 191 and 217 GPa, and the post-shock state of diamond crystal, which is shock-compressed along the intermediate direction between the <111> and <110> crystallographic axes. The HEL wave has a velocity of 19.9 ± 0.3 mm/µsec and an amplitude of 63 ± 28 GPa. An alternate interpretation of the inclined wedge mirror streak record suggests a ramp precursor wave and then another HEL value. The maximum post-shock density achieved upon release from the ∼200 GPa shock state is ∼3.95 Mg/m³, which compares to the initial density 3.52 Mg/m³. This result suggests an elastic unloading effect or shock-induced transition to a denser (possibly metallic) phase.

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Additional Information:Copyright 1983 by the American Geophysical Union. (Received September 14, 1982; revised January 7, 1983; accepted February 7, 1983.) Paper number 3L0262. We appreciate the interest and encouragement offered by Professor A. Sawaoka of Tokyo Institute of Technology. We are grateful for the help of Dr. L. Levien, Dr. J. Vizgirda, W. Ginn, E. Gelle, M. Long, and C. Manning at Caltech. Supported under National Science Foundation, Grant EAR79-26384, Contribution No. 3682, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, 91125.
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Caltech Division of Geological and Planetary Sciences3682
Issue or Number:4
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Official Citation:Ken-ichi Kondo and Thomas J. Ahrens (1983), Shock compression of diamond crystal. Geophysical Research Letters, 10: 281–284. doi: 10.1029/GL010i004p00281
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51139
Deposited By: George Porter
Deposited On:03 Nov 2014 15:57
Last Modified:10 Nov 2021 19:06

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