Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects
Abstract
We present time-resolved observations of Rayleigh-Taylor-instability (RTI) evolution at the interface between an unmagnetized plasma jet colliding with a stagnated, magnetized plasma. The observed instability growth time (~10μs) is consistent with the estimated linear RTI growth rate calculated using experimentally inferred values of density (~1014cm–3) and deceleration (~109 m/s2). The observed mode wavelength (≳1 cm) nearly doubles within a linear growth time. Furthermore, theoretical estimates of magnetic and viscous stabilization and idealized magnetohydrodynamic simulations including a physical viscosity model both suggest that the observed instability evolution is subject to magnetic and/or viscous effects.
- Authors:
-
- Los Alamos National Lab., Los Alamos, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
- Los Alamos National Lab., Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1234926
- Alternate Identifier(s):
- OSTI ID: 1225390
- Report Number(s):
- LA-UR-14-29580
Journal ID: ISSN 1539-3755; PLEEE8
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 5; Journal ID: ISSN 1539-3755
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Adams, Colin S., Moser, Auna L., and Hsu, Scott C. Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects. United States: N. p., 2015.
Web. doi:10.1103/PhysRevE.92.051101.
Adams, Colin S., Moser, Auna L., & Hsu, Scott C. Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects. United States. https://doi.org/10.1103/PhysRevE.92.051101
Adams, Colin S., Moser, Auna L., and Hsu, Scott C. Fri .
"Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects". United States. https://doi.org/10.1103/PhysRevE.92.051101. https://www.osti.gov/servlets/purl/1234926.
@article{osti_1234926,
title = {Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects},
author = {Adams, Colin S. and Moser, Auna L. and Hsu, Scott C.},
abstractNote = {We present time-resolved observations of Rayleigh-Taylor-instability (RTI) evolution at the interface between an unmagnetized plasma jet colliding with a stagnated, magnetized plasma. The observed instability growth time (~10μs) is consistent with the estimated linear RTI growth rate calculated using experimentally inferred values of density (~1014cm–3) and deceleration (~109 m/s2). The observed mode wavelength (≳1 cm) nearly doubles within a linear growth time. Furthermore, theoretical estimates of magnetic and viscous stabilization and idealized magnetohydrodynamic simulations including a physical viscosity model both suggest that the observed instability evolution is subject to magnetic and/or viscous effects.},
doi = {10.1103/PhysRevE.92.051101},
journal = {Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics},
number = 5,
volume = 92,
place = {United States},
year = {Fri Nov 06 00:00:00 EST 2015},
month = {Fri Nov 06 00:00:00 EST 2015}
}
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