Effect of Electric and Magnetic Fields on the Self-Consistent Potential at the Surface of a Degenerate Semiconductor

1972 ◽  
Vol 5 (2) ◽  
pp. 475-497 ◽  
Author(s):  
G. A. Baraff ◽  
Joel A. Appelbaum
Keyword(s):  
Magnetic Fields ◽  
The Self ◽  
Degenerate Semiconductor ◽  
Electric And Magnetic Fields ◽  
Self Consistent

Ion acceleration by multiple laser pulses and their spontaneous electromagnetic fields in plasma

2008 ◽  
Vol 74 (1) ◽  
pp. 111-118
Author(s):  
FEN-CE CHEN
Keyword(s):  
Magnetic Fields ◽  
Electric Field ◽  
Analytical Model ◽  
Electromagnetic Fields ◽  
Equations Of Motion ◽  
Charged Particles ◽  
Laser Pulses ◽  
The Self ◽  
Electric And Magnetic Fields ◽  
Relativistic Equations

AbstractThe acceleration of ions by multiple laser pulses and their spontaneously generated electric and magnetic fields is investigated by using an analytical model for the latter. The relativistic equations of motion of test charged particles are solved numerically. It is found that the self-generated axial electric field plays an important role in the acceleration, and the energy of heavy test ions can reach several gigaelectronvolts.

Stability analysis of sheared non-neutral relativistic cylindrical electron beams in applied magnetic fields

1991 ◽  
Vol 45 (2) ◽  
pp. 191-201 ◽  
Author(s):  
D. Zoler ◽  
S. Cuperman
Keyword(s):  
Stability Analysis ◽  
Magnetic Fields ◽  
Maxwell Equations ◽  
Electron Beams ◽  
Radial Electric Field ◽  
The Self ◽  
Axial Motion ◽  
Axial Velocity Component ◽  
Self Consistent ◽  
Consistent Treatment

A self-consistent stability analysis of relativistic non-neutral cylindrical electron flows propagating along applied magnetic fields is considered within the framework of the macroscopic cold-fluid-Maxwell equations. The full influence of the equilibrium self-electric and self-magnetic fields is retained. Then the E x B drift (E being the radial electric field created by the uncompensated charge) generates a radial shear, vz(r) and v0(r). The effect of the shear in the axial velocity component, as reflected in the relative axial motion of adjacent concentric layers of beam particles, is investigated. The self-consistent treatment of the problem thus shows that the equilibrium state considered in this paper is unstable.

The orbits of electrons and ions in the fields of the rotamak

1987 ◽  
Vol 37 (1) ◽  
pp. 1-13 ◽  
Author(s):  
W. N. Hugrass ◽  
M. Turley
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Charged Particles ◽  
The Self ◽  
Rotating Magnetic Field ◽  
Plasma Equilibrium ◽  
Rotating Magnetic Fields ◽  
Cylindrical Plasma ◽  
Electrons And Ions ◽  
Self Consistent

The motion of electrons and ions in the self-consistent fields of a compact toroidal equilibrium maintained by means of a rotating magnetic field is studied. It is found that the particles are confined although the lines of the instantaneous magnetic field are open. The results are compared with those obtained in an earlier study of the motion of charged particles in the self-consistent fields appropriate to cylindrical plasma equilibrium maintained by means of rotating magnetic fields.

Self-consistent structure of a dc discharge with a closed hall current in crossed electric and magnetic fields

2006 ◽  
Vol 51 (7) ◽  
pp. 841-845 ◽  
Author(s):  
A. A. Platonov ◽  
A. G. Slyshov ◽  
L. D. Tsendin ◽  
S. D. Wagner
Keyword(s):  
Magnetic Fields ◽  
Hall Current ◽  
Dc Discharge ◽  
Electric And Magnetic Fields ◽  
Self Consistent

High-Performance Modelling in Geodynamics

2012 ◽  
pp. 324-352 ◽  
Author(s):  
Lena Noack ◽  
Nicola Tosi
Keyword(s):  
Magnetic Fields ◽  
High Performance ◽  
The Self ◽  
Performance Modelling ◽  
Tectonic Plates ◽  
Multi Scale ◽  
Core Convection ◽  
Self Consistent ◽  
Planetary Magnetic Fields ◽  
Geodynamic Processes

Modelling of geodynamic processes like mantle or core convection has strongly improved over the last two decades thanks to the steady development of numerical codes that tend to incorporate a more and more realistic physics. High-performance parallel computations allow the simulation of complex problems, such as the self-consistent generation of tectonic plates or the formation of planetary magnetic fields. However, the need to perform broad explorations of the parameter space and the large computational demands imposed by the non-linear, multi-scale nature of convection, requires several simplifications, in the domain geometry as well as in the physical complexity of the problem. In this chapter, the authors give an overview of the state-of-the-art convection simulations in planetary mantles, the different models and geometries used, and various methods to simplify the computations.

THE GYROKINETIC APPROXIMATION FOR THE VLASOV–POISSON SYSTEM

2000 ◽  
Vol 10 (09) ◽  
pp. 1305-1332 ◽  
Author(s):  
L. SAINT-RAYMOND
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Electric Field ◽  
Constant Magnetic Field ◽  
Initial Density ◽  
Poisson System ◽  
Formal Derivation ◽  
Fast Rotation ◽  
Electric And Magnetic Fields ◽  
Self Consistent

Consider a plasma in a strong constant magnetic field with self-consistent electric field. We present here the formal derivation that leads to the so-called guiding center approximation, and justify it in the case of a well-prepared initial density of particles. More precisely, we prove that the motion of the particles can be approximatively decomposed as the sum of a fast rotation on Larmor circles, an advection along the magnetic lines and a small drift orthogonal to both electric and magnetic fields.

KINETIC CONFINEMENT AND ZERO–ELECTRIC–FIELD BINDING IN HgCdTe ACCUMULATION LAYERS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3637-3640
Author(s):  
V. F. RADANTSEV ◽  
G. I. KULAEV ◽  
V. V. KRUZHAEV
Keyword(s):  
Experimental Data ◽  
Magnetic Fields ◽  
Electric Field ◽  
External Electric Field ◽  
Bound States ◽  
The Self ◽  
Screening Length ◽  
Self Consistent ◽  
Level Method ◽  
Capacitance Spectroscopy

The effects of kinetic confinement and forming of surface bound states at a zero external electric field (ZEF) are studied experimentally (by the magneto-capacitance spectroscopy of Landau level method) and theoretically (in 8×8 Kane model). The self-consistent calculations we performed predict the existence of occupied kinetically bound but not true bound states at a zero interface electric field that is in agreement with experimental data. The capacitance oscillations at in 2D plane magnetic fields orientation we observed are associated with oscillations of continuum electrons screening length.

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