Enhancing cylindrical compression by reducing plasma ablation in pulsed-power drivers
Abstract
Warm dense matter, which can be found in planetary cores, is too dense to be described by plasma theory and too hot to be considered condensed matter. With no theory describing perfectly how such large quantum systems evolve at macroscopic scales, modeling planetary evolution is simply out of reach. While recent experiments using high power lasers and heavy ion beams have produced warm dense matter samples, they do not confine matter long enough to allow for bulk material properties to take hold, precluding the validation of any theories beyond electron-ion equilibration time. To this end, pulsed-power drivers are required. This approach allows experimentalists to probe macroscopic states of matter where bulk material properties are at equilibrium. High resolution numerical simulations show that a mega-ampere pulsed-power driver can generate macroscopic samples of warm dense matter, using direct magnetic compression, without any pusher. A thin coating, deposited onto the material just before the experiment, softens the density gradients responsible for plasma ablation. Starved of plasma outside the conductors, electrical currents are forced to flow along material surfaces, resulting in a very stable magnetic topology that yields homogeneous compression above 1 Mbar. Another key aspect is as follows: mega-ampere pulsed power systems aremore »
- Authors:
-
- Univ. of Rochester, NY (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- OSTI Identifier:
- 1614458
- Alternate Identifier(s):
- OSTI ID: 1507462
- Grant/Contract Number:
- NA0001944; SC0016252
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 26; Journal Issue: 4; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Physics; Planetary evolution; Gas giants; Lasers; Heavy ion beams; Quantum mechanical systems and processes
Citation Formats
Gourdain, P. -A., Adams, M. B., Evans, M., Hasson, H. R., Shapovalov, R. V., Young, J. R., and West-Abdallah, I. Enhancing cylindrical compression by reducing plasma ablation in pulsed-power drivers. United States: N. p., 2019.
Web. doi:10.1063/1.5086305.
Gourdain, P. -A., Adams, M. B., Evans, M., Hasson, H. R., Shapovalov, R. V., Young, J. R., & West-Abdallah, I. Enhancing cylindrical compression by reducing plasma ablation in pulsed-power drivers. United States. https://doi.org/10.1063/1.5086305
Gourdain, P. -A., Adams, M. B., Evans, M., Hasson, H. R., Shapovalov, R. V., Young, J. R., and West-Abdallah, I. Wed .
"Enhancing cylindrical compression by reducing plasma ablation in pulsed-power drivers". United States. https://doi.org/10.1063/1.5086305. https://www.osti.gov/servlets/purl/1614458.
@article{osti_1614458,
title = {Enhancing cylindrical compression by reducing plasma ablation in pulsed-power drivers},
author = {Gourdain, P. -A. and Adams, M. B. and Evans, M. and Hasson, H. R. and Shapovalov, R. V. and Young, J. R. and West-Abdallah, I.},
abstractNote = {Warm dense matter, which can be found in planetary cores, is too dense to be described by plasma theory and too hot to be considered condensed matter. With no theory describing perfectly how such large quantum systems evolve at macroscopic scales, modeling planetary evolution is simply out of reach. While recent experiments using high power lasers and heavy ion beams have produced warm dense matter samples, they do not confine matter long enough to allow for bulk material properties to take hold, precluding the validation of any theories beyond electron-ion equilibration time. To this end, pulsed-power drivers are required. This approach allows experimentalists to probe macroscopic states of matter where bulk material properties are at equilibrium. High resolution numerical simulations show that a mega-ampere pulsed-power driver can generate macroscopic samples of warm dense matter, using direct magnetic compression, without any pusher. A thin coating, deposited onto the material just before the experiment, softens the density gradients responsible for plasma ablation. Starved of plasma outside the conductors, electrical currents are forced to flow along material surfaces, resulting in a very stable magnetic topology that yields homogeneous compression above 1 Mbar. Another key aspect is as follows: mega-ampere pulsed power systems are compact enough to be located next to existing high brilliance x-ray sources, which can probe best the properties of matter under extreme pressure.},
doi = {10.1063/1.5086305},
journal = {Physics of Plasmas},
number = 4,
volume = 26,
place = {United States},
year = {Wed Apr 17 00:00:00 EDT 2019},
month = {Wed Apr 17 00:00:00 EDT 2019}
}
Web of Science
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Works referencing / citing this record:
Reduction of ablated surface expansion in pulsed-power-driven experiments using an aerosol dielectric coating
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