Bulletin of the American Physical Society
APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010; Portland, Oregon
Session W30: Focus Session: High Pressure IV: Dynamics of Shock Induced Phase Transitions
11:15 AM–2:15 PM,
Thursday, March 18, 2010
Room: D139
Sponsoring
Units:
DCOMP GSCCM
Chair: Timothy Germann, Los Alamos National Laboratory
Abstract ID: BAPS.2010.MAR.W30.2
Abstract: W30.00002 : Ultrafast observation of shock compression from greater than 10 GPa precompression*
11:27 AM–11:39 AM
Preview Abstract
Abstract
Authors:
Michael Armstrong
(LLNL)
Jonathan Crowhurst
Joseph Zaug
For decades, many compression experiments have applied either static compression in a diamond anvil cell (DAC) or dynamic compression using shock waves. Although such experiments provide a wide range of material data, information off the Hugoniot or room temperature isotherm requires more specialized techniques. Further, although ultrafast laser methods have recently been applied to acoustics in the DAC and shock waves at ambient pressure, shock waves from precompressed states have not been observed with ultrafast time resolution. Shock compression of a precompressed material enables two useful experimental strategies. First, the initial state of the material may be placed, via precompression, in the proximity of a phase transition before shock compression, enabling the observation of phase transition dynamics as the material is shock compressed through the phase transition boundary. Second, since low-density materials heat more substantially than high-density materials upon shock compression, an initial pressure may be used to modulate the degree of shock heating. Here we report the application of ultrafast shock wave methods to materials which have been precompressed in a DAC, providing material information off the standard Hugoniot.
*Prepared by LLNL under Contract DE-AC52-07NA27344.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.W30.2
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2018 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
1 Research Road, Ridge, NY 11961-2701
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700