Modeling inner magnetospheric electric fields: Latest self-consistent results

2005 ◽  
pp. 263-269 ◽  
Author(s):  
Stanislav Sazykin ◽  
Robert W. Spiro ◽  
Richard A. Wolf ◽  
Frank R. Toffoletto ◽  
Nikolai Tsyganenko ◽  
...  
Keyword(s):  
Electric Fields ◽  
Self Consistent

scholarly journals Influence of Internal Electric Fields on the Ground Level Emission of GaN/AlGaN Multi-Quantum Wells

2000 ◽  
Vol 5 (S1) ◽  
pp. 970-976
Author(s):  
A. Bonfiglio ◽  
M. Lomascolo ◽  
G. Traetta ◽  
R. Cingolani ◽  
A. Di Carlo ◽  
...  
Keyword(s):  
Experimental Data ◽  
Quantum Wells ◽  
Electric Fields ◽  
Tight Binding ◽  
Ground Level ◽  
Analytic Model ◽  
Tight Binding Model ◽  
Binding Model ◽  
Emission Energy ◽  
Self Consistent

The spectroscopic investigation of GaN/AlGaN quantum wells reveals that the emission energy of such structures is determined by four parameters, namely composition, well-width, strain and charge density. The experimental data obtained by varying these parameters are quantitatively explained by an analytic model based on the envelope function formalism which accounts for screening and built-in field, and by a full self-consistent tight-binding model.

Stability of a positive column in the presence of an axial magnetic field

1982 ◽  
Vol 28 (1) ◽  
pp. 113-124 ◽  
Author(s):  
Mahinder S. Uberoi ◽  
Chuen-Yen Chow
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Electron Density ◽  
Electric Fields ◽  
Positive Column ◽  
Axial Magnetic Field ◽  
Previous Analysis ◽  
Self Consistent ◽  
The Stability ◽  
Axisymmetric Perturbations

Self-consistent infinitesimal perturbations of electron density and electric field are used to analyse the stability of the plasma. The axisymmetric perturbations are stable for any magnetic and electric field strengths. The non-axisymmetric perturbations with azimuthal modes m ≥ 1 and less than a certain integer are unstable for certain ranges of magnetic and electric fields. The mode m = 2 can be more unstable than the mode m = 1. Previous analysis by other authors was confined to the case m = 1 and the perturbations were not self-consistent. Our results differ significantly from the earlier results.

Influence of Internal Electric Fields on the Ground Level Emission of GaN/AlGaN Multi-Quantum Wells

1999 ◽  
Vol 595 ◽  
Author(s):  
A. Bonfiglio ◽  
M. Lomascolo ◽  
G. Traetta ◽  
R. Cingolani ◽  
A. Di Carlo ◽  
...  
Keyword(s):  
Experimental Data ◽  
Quantum Wells ◽  
Electric Fields ◽  
Tight Binding ◽  
Ground Level ◽  
Analytic Model ◽  
Tight Binding Model ◽  
Binding Model ◽  
Emission Energy ◽  
Self Consistent

AbstractThe spectroscopic investigation of GaN/AlGaN quantum wells reveals that the emission energy of such structures is determined by four parameters, namely composition, well-width, strain and charge density. The experimental data obtained by varying these parameters are quantitatively explained by an analytic model based on the envelope function formalism which accounts for screening and built-in field, and by a full self-consistent tight-binding model.

Phase diagrams of diblock copolymers in electric fields: a self-consistent field theory study

2016 ◽  
Vol 18 (15) ◽  
pp. 10309-10319 ◽  
Author(s):  
Ji Wu ◽  
Xianghong Wang ◽  
Yongyun Ji ◽  
Linli He ◽  
Shiben Li
Keyword(s):  
Field Theory ◽  
Phase Diagrams ◽  
Electric Fields ◽  
Diblock Copolymers ◽  
Phase Boundaries ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory ◽  
And Shifts

The electric field induces the new phases and shifts the phase boundaries in phase diagrams for the diblock copolymers.

Exact solutions for the electron distribution in plane magnetrons

1965 ◽  
Vol 287 (1409) ◽  
pp. 183-200 ◽  
Keyword(s):  
Space Charge ◽  
Electric Fields ◽  
Stream Flow ◽  
Electron Distribution ◽  
Practical Interest ◽  
Space Charge Density ◽  
Complete Analysis ◽  
Field Variation ◽  
Self Consistent ◽  
Electric Potentials

The old problem of electron distribution in crossed electric and magnetic fields, such as exist in magnetrons, has in the past proved full of pitfalls, owing to the decisive influence which even very small initial electron velocities can have on the character of the solution. A complete analysis of the plane magnetron is presented, with a thermal emitter, i.e. with Maxwellian distribution of the initial velocities. Instead of looking for self-consistent solutions, which vary strongly with the space charge, the solution is given for three simple types of prescribed electric potentials, zero, linear and parabolic. The first two are mainly for orientation, the third is of practical interest as it is approximately self-consistent. For zero or weak electric fields the distribution is ‘triangular’, i.e. the function decreases monotonically as we move away from the cathode. For strong electric fields, the distribution has a peak away from the cathode and strongly resembles that obtained in the so called ‘double-stream’ flow. Finally, for a parabolic potential distribution (linear field variation) the space charge density exhibits a pronounced plateau which is highly reminiscent of the conditions in a Brillouin or ‘single-stream’ flow, although the electron motion is anything but rectilinear.

Perpendicular Conductivity and Self-Consistent Electric Fields in Tokamak Edge Plasma

2000 ◽  
Vol 40 (3-4) ◽  
pp. 423-430 ◽  
Author(s):  
V. Rozhansky ◽  
S. Voskoboynikov ◽  
E. Kovaltsova ◽  
D. Coster ◽  
R. Schneider
Keyword(s):  
Electric Fields ◽  
Edge Plasma ◽  
Self Consistent ◽  
Tokamak Edge
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