scholarly journals Observations of large amplitude parallel electric field wave packets at the plasma sheet boundary

1998 ◽  
Vol 25 (6) ◽  
pp. 857-860 ◽  
Author(s):  
C. Cattell ◽  
J. Wygant ◽  
J. Dombeck ◽  
F. S. Mozer ◽  
M. Temerin ◽  
...  
Keyword(s):  
Electric Field ◽  
Plasma Sheet ◽  
Large Amplitude ◽  
Wave Packets ◽  
Parallel Electric Field ◽  
Field Wave

scholarly journals Double layers in the downward current region of the aurora

2003 ◽  
Vol 10 (1/2) ◽  
pp. 45-52 ◽  
Author(s):  
R. E. Ergun ◽  
L. Andersson ◽  
C. W. Carlson ◽  
D. L. Newman ◽  
M. V. Goldman
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Phase Space ◽  
Electric Field ◽  
Electric Fields ◽  
Double Layers ◽  
Parallel Electric Field ◽  
Electrostatic Waves ◽  
Current Region ◽  
Decisive Evidence

Abstract. Direct observations of magnetic-field-aligned (parallel) electric fields in the downward current region of the aurora provide decisive evidence of naturally occurring double layers. We report measurements of parallel electric fields, electron fluxes and ion fluxes related to double layers that are responsible for particle acceleration. The observations suggest that parallel electric fields organize into a structure of three distinct, narrowly-confined regions along the magnetic field (B). In the "ramp" region, the measured parallel electric field forms a nearly-monotonic potential ramp that is localized to ~ 10 Debye lengths along B. The ramp is moving parallel to B at the ion acoustic speed (vs) and in the same direction as the accelerated electrons. On the high-potential side of the ramp, in the "beam" region, an unstable electron beam is seen for roughly another 10 Debye lengths along B. The electron beam is rapidly stabilized by intense electrostatic waves and nonlinear structures interpreted as electron phase-space holes. The "wave" region is physically separated from the ramp by the beam region. Numerical simulations reproduce a similar ramp structure, beam region, electrostatic turbulence region and plasma characteristics as seen in the observations. These results suggest that large double layers can account for the parallel electric field in the downward current region and that intense electrostatic turbulence rapidly stabilizes the accelerated electron distributions. These results also demonstrate that parallel electric fields are directly associated with the generation of large-amplitude electron phase-space holes and plasma waves.

Relationship between Field-Aligned Currents and Parallel Electric Field Observed by Akebono

1998 ◽  
pp. 59-62 ◽  
Author(s):  
M. Morooka ◽  
T. Yamamoto ◽  
T. Mukai ◽  
K. Tsuruda ◽  
H. Hayakawa ◽  
...  
Keyword(s):  
Electric Field ◽  
Parallel Electric Field

The effect of parallel electric field in shock waves on the acceleration of relativistic ions, electrons, and positrons

2009 ◽  
Vol 16 (11) ◽  
pp. 112308 ◽  
Author(s):  
Seiichi Takahashi ◽  
Hiromasa Kawai ◽  
Yukiharu Ohsawa ◽  
Shunsuke Usami ◽  
Charles Chiu ◽  
...  
Keyword(s):  
Shock Waves ◽  
Electric Field ◽  
Parallel Electric Field ◽  
Electrons And Positrons

Influence of a parallel electric field on the conductivity of a growing indium oxide film

1996 ◽  
Vol 290-291 ◽  
pp. 10-12 ◽  
Author(s):  
B. Alterkop ◽  
N. Parkansky ◽  
R.L. Boxman ◽  
S. Goldsmith
Keyword(s):  
Oxide Film ◽  
Electric Field ◽  
Indium Oxide ◽  
Parallel Electric Field ◽  
Indium Oxide Film
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