skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Rarefaction velocities in shocked tantalum and the high-pressure melting point

Abstract

The optical analyzer technique has been used to determine the pressure at which shock compressed tantalum can no longer support a longitudinal elastic wave. At 295 GPa, the release wave velocity drops to a value consistent with a calculated bulk sound velocity, indicating partial melting. At higher shock pressures, the bulk sound velocity follows a constant rho ..gamma.. model, where ..gamma.. is the Grueneisen parameter. With these measurements we have identified melting on the Ta Hugonitot, and we have calibrated Ta as a high impedance driver for similar experiments on other materials.

Authors:
;
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
5962493
Report Number(s):
LA-UR-83-2144; CONF-830719-17
ON: DE83015916
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Resource Relation:
Conference: American Physical Society meeting on shock waves in condensed media, Santa Fe, NM, USA, 18 Jul 1983
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; TANTALUM; MELTING POINTS; COMPRESSION; EXPERIMENTAL DATA; MEASURING METHODS; MELTING; PHASE TRANSFORMATIONS; PHOTOMETRY; PRESSURE DEPENDENCE; SHOCK WAVES; SOUND WAVES; VELOCITY; WAVE PROPAGATION; DATA; ELEMENTS; INFORMATION; METALS; NUMERICAL DATA; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; TRANSITION TEMPERATURE; 360104* - Metals & Alloys- Physical Properties

Citation Formats

Brown, J M, and Shaner, J W. Rarefaction velocities in shocked tantalum and the high-pressure melting point. United States: N. p., 1983. Web. doi:10.2172/5962493.
Brown, J M, & Shaner, J W. Rarefaction velocities in shocked tantalum and the high-pressure melting point. United States. https://doi.org/10.2172/5962493
Brown, J M, and Shaner, J W. 1983. "Rarefaction velocities in shocked tantalum and the high-pressure melting point". United States. https://doi.org/10.2172/5962493. https://www.osti.gov/servlets/purl/5962493.
@article{osti_5962493,
title = {Rarefaction velocities in shocked tantalum and the high-pressure melting point},
author = {Brown, J M and Shaner, J W},
abstractNote = {The optical analyzer technique has been used to determine the pressure at which shock compressed tantalum can no longer support a longitudinal elastic wave. At 295 GPa, the release wave velocity drops to a value consistent with a calculated bulk sound velocity, indicating partial melting. At higher shock pressures, the bulk sound velocity follows a constant rho ..gamma.. model, where ..gamma.. is the Grueneisen parameter. With these measurements we have identified melting on the Ta Hugonitot, and we have calibrated Ta as a high impedance driver for similar experiments on other materials.},
doi = {10.2172/5962493},
url = {https://www.osti.gov/biblio/5962493}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}