The Role of Ion Acoustic Instability in the Development of the Azimuthal Current Density Profile in Liner Experiments at 1 MA
Abstract
Recent work reported on the current density in pulsed-power-driven liners where a vacuum gap was introduced in the power feed connecting the liner to the generator. The resultant gap flashover generates azimuthally localized current-carrying plasma channels, which can create an azimuthal nonuniformity in the current density. The current density evolves during the current pulse, but nonuniformity is observed through the experiment timescale. Magnetohydrodynamic simulation work in 3-D demonstrates the difficulty in reproducing the experimental data within a limited computational domain, and those boundary conditions may dominate this paper. Furthermore, the development of current-driven instabilities in the plasma channels can explain the liner current density evolution, and specifically the ion acoustic instability can account for the main features observed in the experiments.
- Authors:
-
- Univ. of California, San Diego, La Jolla, CA (United States)
- Cornell Univ., Ithaca, NY (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Cornell Univ., Ithaca, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1499659
- Grant/Contract Number:
- NA0003764
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- IEEE Transactions on Plasma Science
- Additional Journal Information:
- Journal Volume: 46; Journal Issue: 6; Journal ID: ISSN 0093-3813
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 42 ENGINEERING; current density; plasma pinch; plasma stability; vacuum breakdown
Citation Formats
Bott-Suzuki, Simon C., Cordaro, Samuel W., Atoyan, L., Byvank, T., Potter, W., Kusse, B. R., Greenly, J. B., Hammer, D. A., and Jennings, C. A. The Role of Ion Acoustic Instability in the Development of the Azimuthal Current Density Profile in Liner Experiments at 1 MA. United States: N. p., 2017.
Web. doi:10.1109/TPS.2017.2783192.
Bott-Suzuki, Simon C., Cordaro, Samuel W., Atoyan, L., Byvank, T., Potter, W., Kusse, B. R., Greenly, J. B., Hammer, D. A., & Jennings, C. A. The Role of Ion Acoustic Instability in the Development of the Azimuthal Current Density Profile in Liner Experiments at 1 MA. United States. https://doi.org/10.1109/TPS.2017.2783192
Bott-Suzuki, Simon C., Cordaro, Samuel W., Atoyan, L., Byvank, T., Potter, W., Kusse, B. R., Greenly, J. B., Hammer, D. A., and Jennings, C. A. 2017.
"The Role of Ion Acoustic Instability in the Development of the Azimuthal Current Density Profile in Liner Experiments at 1 MA". United States. https://doi.org/10.1109/TPS.2017.2783192. https://www.osti.gov/servlets/purl/1499659.
@article{osti_1499659,
title = {The Role of Ion Acoustic Instability in the Development of the Azimuthal Current Density Profile in Liner Experiments at 1 MA},
author = {Bott-Suzuki, Simon C. and Cordaro, Samuel W. and Atoyan, L. and Byvank, T. and Potter, W. and Kusse, B. R. and Greenly, J. B. and Hammer, D. A. and Jennings, C. A.},
abstractNote = {Recent work reported on the current density in pulsed-power-driven liners where a vacuum gap was introduced in the power feed connecting the liner to the generator. The resultant gap flashover generates azimuthally localized current-carrying plasma channels, which can create an azimuthal nonuniformity in the current density. The current density evolves during the current pulse, but nonuniformity is observed through the experiment timescale. Magnetohydrodynamic simulation work in 3-D demonstrates the difficulty in reproducing the experimental data within a limited computational domain, and those boundary conditions may dominate this paper. Furthermore, the development of current-driven instabilities in the plasma channels can explain the liner current density evolution, and specifically the ion acoustic instability can account for the main features observed in the experiments.},
doi = {10.1109/TPS.2017.2783192},
url = {https://www.osti.gov/biblio/1499659},
journal = {IEEE Transactions on Plasma Science},
issn = {0093-3813},
number = 6,
volume = 46,
place = {United States},
year = {Wed Dec 27 00:00:00 EST 2017},
month = {Wed Dec 27 00:00:00 EST 2017}
}
Figures / Tables:
Figures / Tables found in this record: