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Title: Exploratory laser-driven shock wave studies

Abstract

We show the results of a feasibility study for investigating shock structure and for measuring equation-of-state parameters using high-energy, short-pulse lasers. We discuss the temporal and spatial structure of the luminosity from laser-driven shock unloading in aluminum foils. We demonstrate that shock velocity can be measured by observing the time interval between shock emergence across two thicknesses and show data for shocks of 1.3 and 2.1 Mbar. The fact that we observe shock fronts cleanly breaking through steps as small as 3 ..mu..m indicates that the shock front thickness is very small in the few megabar region; this is the first experimental verification that these fronts are not more than a few micrometers thick. We present approximate measurements of free-surface velocity. Finally, we speculate on the use of these techniques to obtain detailed equation-of-state data.

Authors:
;
Publication Date:
Research Org.:
Los Alamos Scientific Lab., N.Mex. (USA)
OSTI Identifier:
5313279
Report Number(s):
LA-6997-MS
TRN: 78-002722
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM; EQUATIONS OF STATE; SHOCK WAVES; LASER RADIATION; FOILS; PULSE TECHNIQUES; WAVE PROPAGATION; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUATIONS; METALS; RADIATIONS; 360104* - Metals & Alloys- Physical Properties; 656000 - Condensed Matter Physics

Citation Formats

Solem, J C, and Veeser, L R. Exploratory laser-driven shock wave studies. United States: N. p., 1977. Web. doi:10.2172/5313279.
Solem, J C, & Veeser, L R. Exploratory laser-driven shock wave studies. United States. https://doi.org/10.2172/5313279
Solem, J C, and Veeser, L R. Tue . "Exploratory laser-driven shock wave studies". United States. https://doi.org/10.2172/5313279. https://www.osti.gov/servlets/purl/5313279.
@article{osti_5313279,
title = {Exploratory laser-driven shock wave studies},
author = {Solem, J C and Veeser, L R},
abstractNote = {We show the results of a feasibility study for investigating shock structure and for measuring equation-of-state parameters using high-energy, short-pulse lasers. We discuss the temporal and spatial structure of the luminosity from laser-driven shock unloading in aluminum foils. We demonstrate that shock velocity can be measured by observing the time interval between shock emergence across two thicknesses and show data for shocks of 1.3 and 2.1 Mbar. The fact that we observe shock fronts cleanly breaking through steps as small as 3 ..mu..m indicates that the shock front thickness is very small in the few megabar region; this is the first experimental verification that these fronts are not more than a few micrometers thick. We present approximate measurements of free-surface velocity. Finally, we speculate on the use of these techniques to obtain detailed equation-of-state data.},
doi = {10.2172/5313279},
url = {https://www.osti.gov/biblio/5313279}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {11}
}