Heighway, Patrick, Sliwa, M., McGonegle, David et al. (15 more authors) (2019) Nonisentropic Release of a Shocked Solid. Physical Review Letters. 245501. ISSN 1079-7114
Abstract
We present molecular dynamics (MD) simulations of shock and release in micron-scale tantalum crystals that exhibit post-breakout temperatures far exceeding those expected under the standard assumption of isentropic release. We show via an energy-budget analysis that this is due to plastic-work heating from material strength that largely counters thermoelastic cooling. The simulations are corroborated by experiments where the release temperatures of laser-shocked tantalum foils are deduced from their thermal strains via in situ x-ray diffraction, and are found to be close to those behind the shock.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | This is an author-produced version of the published paper. Uploaded with permission of the publisher/copyright holder. Further copying may not be permitted; contact the publisher for details |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 12 Dec 2019 10:40 |
Last Modified: | 16 Oct 2024 16:08 |
Published Version: | https://doi.org/10.1103/PhysRevLett.123.245501 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.123.245501 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:154539 |
Download
Filename: Isentropic_heating_preprint.pdf
Description: Non-isentropic Release of a Shocked Solid