Measurements of the Equation of State of Lead Under Varying Conditions by Multiple Methods.
Abstract
For the past few years AWE has been pursuing a program of principal Hugoniot EOS measurements on metals and plastics at multi-Mbar pressures. Recently we have decided to concentrate on measurements on lead by as many techniques as possible to cover as much of the EOS parameter space as possible. Using the HELEN laser we have made more Hugoniot measurements from 800kbar to 10Mbar. We have also performed isentropic compression experiments up to 1Mbar using the Sandia National Laboratory's Z machine. These were on single-crystal and bulk lead and a lead-antimony alloy. These complementary experiments allow us to compare single-crystal, bulk and alloyed materials, to compare Hugoniots and isentropes at 1Mbar and to compare laser-driven experiments with existing gas-gun and explosively driven data at low pressures. This presentation will describe these experiments and the results, with emphasis on the ways in which they are complemetary: how one measurement can verify another, how techniques and diagnostics carry-over, and the ways in which one method can provide data not possible from another.
- Publication:
-
APS Shock Compression of Condensed Matter Meeting Abstracts
- Pub Date:
- June 2001
- Bibcode:
- 2001APS..SHK.N4004R