Nonlinear evolution of the unmagnetized ion Rayleigh--Taylor instability
Journal Article
·
· Physics of Fluids B; (USA)
- Space Plasma Branch, Plasma Physics Division, Naval Research Laboratory, Washington, DC (USA)
The nonlinear evolution of the unmagnetized ion Rayleigh--Taylor instability is investigated. A nonlinear state corresponding to localized clumps of high-density plasma is obtained analytically. The characteristic scale size of the clumps is given by {Delta}{similar to}{ital D}({ital gL}{sub {ital n}}){sup {minus}1/2}, where {ital g} is the gravitational acceleration, {ital L}{sub {ital n}} is the density gradient scale length, and {ital D} is a diffusion coefficient associated with the short-scale dissipation processes in the system. It is shown numerically that this nonlinear state may be both accessible and stable.
- OSTI ID:
- 6415957
- Journal Information:
- Physics of Fluids B; (USA), Vol. 2:9; ISSN 0899-8221
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
PLASMA
RAYLEIGH-TAYLOR INSTABILITY
ACCELERATION
ANALYTICAL SOLUTION
DIFFUSION
ENERGY LOSSES
GRAVITATION
IONS
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
PLASMA DENSITY
CHARGED PARTICLES
INSTABILITY
LOSSES
640410* - Fluid Physics- General Fluid Dynamics
SUPERCONDUCTIVITY AND SUPERFLUIDITY
PLASMA
RAYLEIGH-TAYLOR INSTABILITY
ACCELERATION
ANALYTICAL SOLUTION
DIFFUSION
ENERGY LOSSES
GRAVITATION
IONS
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
PLASMA DENSITY
CHARGED PARTICLES
INSTABILITY
LOSSES
640410* - Fluid Physics- General Fluid Dynamics