Measurement of release wave speed in shock-compressed polycrystalline alumina and aluminum
- Creators
- Bless, Stephan J.
- Ahrens, Thomas J.
Abstract
Values of release wave speed in shock-compressed polycrystalline alumina and aluminum (2024) have been measured to 400 and 260 kbar, respectively. These values, as well as previous data for aluminum and iron, have been compared with fourth-order finite strain extrapolations of the longitudinal sound speed V_p. For alumina in the pressure range 200–300 kbar and for α iron and ∈ iron the observed release wave speeds fall below any reasonable extrapolation of V_p. In the range 360–400 kbar the data for alumina indicate that M(∂^2M/∂ P^2) ≃ −50 (where M and P are longitudinal modulus and pressure, respectively); this value is in approximate agreement with Graham's ∼200-kbar data on elastic shock compression of single-crystal aluminum oxide. For aluminum the data indicate a value for M(∂^2M/∂ P^2) of 2.7±5.7.
Additional Information
Copyright 1976 by the American Geophysical Union. (Received May 27, 1975; revised August 26, 1975; accepted September 5, 1975.) This research was supported under NSF grant GA 39042X. The authors appreciate the conscientious operation of the gun facility by Harold Richeson and David Johnson. Comments of M. van Thiel have also been very valuable to us. Contribution 2632 of the Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California.Attached Files
Published - jgr13565.pdf
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Additional details
- Eprint ID
- 51391
- Resolver ID
- CaltechAUTHORS:20141106-144021446
- GA 39042X
- NSF
- Created
-
2014-11-06Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 2632