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Absolute equation of state measurement of aluminum using laser quasi-isentropic-driven flyer plate

Published online by Cambridge University Press:  01 February 2017

H. Shu*
Affiliation:
Shanghai Institute of Laser Plasma, Shanghai 201800, China
X. Huang
Affiliation:
Shanghai Institute of Laser Plasma, Shanghai 201800, China
J. Ye
Affiliation:
Shanghai Institute of Laser Plasma, Shanghai 201800, China
G. Jia
Affiliation:
Shanghai Institute of Laser Plasma, Shanghai 201800, China
J. Wu
Affiliation:
Shanghai Institute of Laser Plasma, Shanghai 201800, China
S. Fu
Affiliation:
Shanghai Institute of Laser Plasma, Shanghai 201800, China
*
Address correspondence and reprint requests to: Hua Shu, Shanghai Institute of LaserPlasma, Shanghai 201800, China. E-mail: shuhua1979@163.com
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Abstract

In this paper, we perform an absolute equation of state (EOS) measurement on the principal Hugoniot of aluminum using a near-symmetric impact method. The flyer plates are accelerated to high velocities using the laser-ramp-driven method. An aluminum flyer plate of ~25 µm is accelerated to the velocity range from 4 to 12 km/s. Then the aluminum flyer plate propagates across a vacuum gap and impacts with an aluminum step target. A line-imaging optical recording velocity interferometer for any reflector (ORVIS) is used to measure the aluminum flyer plate and the shock velocity simultaneously. Aluminum EOS data were measured with pressures range from 50 to 200 GPa. This absolute EOS measurement method may be used for studying a variety of materials.

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Type
Research Article
Copyright
Copyright © Cambridge University Press 2017 

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