Sustenance of inhomogeneous electron temperature in a magnetized plasma column

2015 ◽  
Vol 22 (9) ◽  
pp. 092107 ◽  
Author(s):  
S. K. Karkari ◽  
S. K. Mishra ◽  
P. K. Kaw
Keyword(s):  
Electron Temperature ◽  
Plasma Column ◽  
Magnetized Plasma

Plane Wave Interaction with an Inhomogeneous Warm Plasma Column

1971 ◽  
Vol 49 (20) ◽  
pp. 2578-2588 ◽  
Author(s):  
Kanwal J. Parbhakar ◽  
Brian C. Gregory
Keyword(s):  
Electric Field ◽  
Electron Temperature ◽  
Plasma Column ◽  
Cold Plasma ◽  
Plane Electromagnetic Wave ◽  
Wave Interaction ◽  
Radial Electric Field ◽  
Main Resonance ◽  
At Resonance ◽  
Warm Plasma

The interaction of a plane electromagnetic wave with an inhomogeneous warm plasma column is studied as a boundary value problem using a wave matching method. The plasma is characterized by a uniform electron temperature T and a parabolic density distribution N00 (1 − αr2/α2), where N00 is the central line density, α the inhomogeneity parameter, and a the column radius. The coupled Maxwell's and first two moment equations, assuming scalar pressure, are solved numerically without the quasi-static assumption. The resonances cannot be characterized by a single parameter; the effects of α, T, and N00 are studied separately. The resonances are located by noting that the magnitude of the scattering coefficient is unity (for a unit amplitude incident wave) at resonance. The maxima in the scattering are associated with the maxima in the coupling.It is found that the dielectric or the main resonance is a reasonably good radiator, while the plasma wave resonances (Tonks–Dattner resonances) are rather poor radiators. A detailed analysis of the radial electric field inside the plasma indicates that the main resonance is essentially a cold plasma resonance. As for the resonant frequencies, our results are in good agreement with those of Parker, Nickel, and Gould.The radial electric field at resonance inside the plasma is very sensitive to electron temperature.For the main resonance the field distribution at low electron temperature approaches that of a uniform cold plasma at resonance.

A magnetized plasma with very low electron temperature

2012 ◽  
Vol 21 (5) ◽  
pp. 055025 ◽  
Author(s):  
Shannon Dickson ◽  
Devin Konecny ◽  
Tyler Nickerson ◽  
Scott Robertson
Keyword(s):  
Electron Temperature ◽  
Magnetized Plasma

Harmonic Generation in a Short Magnetized Plasma Column

1966 ◽  
Vol 21 (1) ◽  
pp. 195-196 ◽  
Author(s):  
Kiyoshi Yatsui ◽  
Yoshio Inuishi
Keyword(s):  
Harmonic Generation ◽  
Plasma Column ◽  
Magnetized Plasma

A new MHD model for Io's and Europa's plasma interaction

2020 ◽  
Author(s):  
Aljona Blöcker ◽  
Lorenz Roth ◽  
Nickolay Ivchenko ◽  
Emmanuel Chané ◽  
Ronny Keppens
Keyword(s):  
Heat Flux ◽  
Electron Temperature ◽  
Inelastic Collisions ◽  
Magnetized Plasma ◽  
Plasma Interaction ◽  
Complex Plasma ◽  
Electron Heat ◽  
Self Consistent ◽  
Physical Effects ◽  
Auroral Emissions

<p>Io and Europa are embedded in Jupiter’s magnetosphere and the moons’ surfaces and atmospheres interact with the surrounding moving magnetized plasma forming a complex plasma interaction. The interaction scenarios for both moons are characterized by inhomogeneities in the atmospheres from local outgassing. These inhomogeneities affect the electromagnetic environment but can also lead to localized features in the moons' auroral emissions. The moons’ aurora in turn is sensitive to the energy or temperature of the exciting electrons in the plasma. To simulate the interaction scenarios including atmospheric inhomogeneities and aurora generation, we expand the magnetohydrodynamic code MPI-AMRVAC by implementing a self-consistent description of the electron temperature and the electron density where the cooling by inelastic collisions between the magnetospheric electrons and the atmosphere, and the electron heat flux from the magnetospheric plasma to the moons’ ionosphere are included. Furthermore, the numerical schemes of MPI-AMRVAC are able to handle discontinuities that arise from the atmospheric inhomogeneities. Here, we demonstrate the implementation of the physical effects and first modeling results of Io’s and Europa’s plasma interaction with the advanced MHD code.</p>

An oscillation in a magnetized plasma column with an inflection point

1982 ◽  
Vol 24 (12) ◽  
pp. 1531-1534
Author(s):  
N Takeuchi ◽  
K Narita ◽  
T Shimada ◽  
K Sugita
Keyword(s):  
Plasma Column ◽  
Inflection Point ◽  
Magnetized Plasma
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