Anisotropic pressure and finite hot-electron Larmor radius effects on hot-electron ring stability

1983 ◽  
Vol 26 (10) ◽  
pp. 3079 ◽  
Author(s):  
K. T. Tsang
Keyword(s):  
Larmor Radius ◽  
Anisotropic Pressure ◽  
Hot Electron ◽  
Electron Ring ◽  
Ring Stability

scholarly journals Observation of hot electron ring instabilities in ELMO Bumpy Torus

1984 ◽  
Vol 27 (4) ◽  
pp. 1019 ◽  
Author(s):  
S. Hiroe ◽  
J. B. Wilgen ◽  
F. W. Baity ◽  
L. A. Berry ◽  
R. J. Colchin ◽  
...  
Keyword(s):  
Hot Electron ◽  
Electron Ring

Stabilization of electrostatic flute mode due to hot electron ring and RF field

1983 ◽  
Vol 29 (1) ◽  
pp. 99-109 ◽  
Author(s):  
H. Sanuki
Keyword(s):  
Simple Model ◽  
Electric Field ◽  
Dynamic Stabilization ◽  
Artificial Gravity ◽  
Hot Electron ◽  
Electron Ring ◽  
Smooth Cylinder

The dynamic stabilization of electrostatic flute modes by an RF electric field is studied on the basis of the relatively simple model of a smooth cylinder with artificial gravity and an ambipolar field. It is found that the electrostatic flute modes can be effectively stabilized by the RF electric field together with the hot electron ring.

Characteristics of Hot Electron Ring in a Simple Magnetic Mirror Field

1991 ◽  
Vol 30 (Part 1, No. 1) ◽  
pp. 152-160
Author(s):  
Minoru Hosokawa ◽  
Hideo Ikegami
Keyword(s):  
Magnetic Mirror ◽  
Hot Electron ◽  
Electron Ring

scholarly journals Finite-Larmor-radius equilibrium and currents of the Earth’s flank magnetopause

2018 ◽  
Vol 84 (5) ◽  
Author(s):  
S. S. Cerri
Keyword(s):  
Fluid Model ◽  
Larmor Radius ◽  
Anisotropic Pressure ◽  
Current Layer ◽  
Ion Dynamics ◽  
Finite Larmor Radius ◽  
Analytic Expressions ◽  
The One ◽  
Flr Effects ◽  
The Magnetic Field

We consider the one-dimensional equilibrium problem of a shear-flow boundary layer within an ‘extended-fluid model’ of a plasma that includes the Hall and the electron pressure terms in Ohm’s law, as well as dynamic equations for anisotropic pressure for each species and first-order finite-Larmor-radius (FLR) corrections to the ion dynamics. We provide a generalized version of the analytic expressions for the equilibrium configuration given in Cerri et al., (Phys. Plasmas, vol. 20 (11), 2013, 112112), highlighting their intrinsic asymmetry due to the relative orientation of the magnetic field $\boldsymbol{B}$, $\boldsymbol{b}=\boldsymbol{B}/|\boldsymbol{B}|$, and the fluid vorticity $\unicode[STIX]{x1D74E}=\unicode[STIX]{x1D735}\times \boldsymbol{u}$ (‘$\unicode[STIX]{x1D74E}\boldsymbol{b}$ asymmetry’). Finally, we show that FLR effects can modify the Chapman–Ferraro current layer at the flank magnetopause in a way that is consistent with the observed structure reported by Haaland et al., (J. Geophys. Res. (Space Phys.), vol. 119, 2014, pp. 9019–9037). In particular, we are able to qualitatively reproduce the following key features: (i) the dusk–dawn asymmetry of the current layer, (ii) a double-peak feature in the current profiles and (iii) adjacent current sheets having thicknesses of several ion Larmor radii and with different current directions.

scholarly journals Magnetic well depth in EBT and sensitivity to hot-electron ring geometry

1985 ◽  
Vol 25 (1) ◽  
pp. 71-84 ◽  
Author(s):  
E.F. Jaeger ◽  
L.A. Berry ◽  
C.L. Hedrick ◽  
R.K. Richards
Keyword(s):  
Hot Electron ◽  
Electron Ring ◽  
Ring Geometry ◽  
Well Depth ◽  
Magnetic Well

The effects of finite Larmor radius on the perturbation flow mixing of a collisionless plasma

1970 ◽  
Vol 4 (2) ◽  
pp. 403-424 ◽  
Author(s):  
Shigeki Morioka ◽  
John R. Spreiter
Keyword(s):  
Mach Number ◽  
Collisionless Plasma ◽  
Distribution Functions ◽  
Larmor Radius ◽  
Anisotropic Pressure ◽  
Finite Larmor Radius ◽  
Flow Mixing ◽  
Linearized Problem ◽  
Velocity Distribution Functions ◽  
Low Theory

The Chew—Goldberger—Low theory of a collisionless plasma, modified to include the effect of finite Larmor radius of the ion and the electron, is applied to a linearized problem of two-dimensional steady flow. The zeroth-order terms in the Larmor radius expansions of the velocity distribution functions of the ion and the electron are assumed to be anisotropic Maxwellian. The spatial development of a given velocity profile is investigated for flows with either crossed or aligned magnetic fields, and for various values of Mach number, Alfvén Mach number, and anisotropic pressure ratios in the main flow.

scholarly journals Magnetic well depth in EBT and sensitivity to hot electron ring geometry

1984 ◽  
Author(s):  
E. F. Jaeger ◽  
L. A. Berry ◽  
C. L. Hedrick ◽  
R. K. Richards
Keyword(s):  
Hot Electron ◽  
Electron Ring ◽  
Ring Geometry ◽  
Well Depth ◽  
Magnetic Well

scholarly journals An experimental determination of the hot electron ring geometry in a Bumpy Torus and its implications for Bumpy Torus stability

1986 ◽  
Author(s):  
D. L. Hillis ◽  
J. B. Wilgen ◽  
T. S. Bigelow ◽  
Jaeger, E/F. ◽  
D. W. Swain ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Hot Electron ◽  
Electron Ring ◽  
Ring Geometry
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