scholarly journals Proper Ties of a Laboratory Plasma Prepared with Combined Transverse and Longitudinal Currents

1967 ◽  
Vol 20 (1) ◽  
pp. 47 ◽  
Author(s):  
IG Brown ◽  
JA Lehane ◽  
IC Potter ◽  
CN Watson-Munro
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Plasma Physics ◽  
Hybrid Method ◽  
Laboratory Plasma ◽  
Steady Magnetic Field ◽  
Fractional Ionization ◽  
Low Magnetic Field ◽  
Physics Experiments

For some laboratory plasma physics experiments it is necessary to have a plasma of high fractional ionization that is confined in a relatively low magnetic field and for which the charged particle densities and kinetic temperatures do not change too rapidly in space or time. It has been found that a plasma prepared by a "hybrid" method with ionizing currents, both transverse and parallel to the steady magnetic field, has distinct advantages for such experiments.

Excitation of surface-type X modes by charged-particle beams

1998 ◽  
Vol 60 (2) ◽  
pp. 413-420 ◽  
Author(s):  
V. O. GIRKA
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Structural Parameters ◽  
Particle Beam ◽  
Charged Particle Beam ◽  
Surface Type ◽  
Charged Particle Beams ◽  
Steady Magnetic Field ◽  
Polarized Surface ◽  
Oriented Parallel

A theoretical investigation of extraordinary polarized surface waves at the second harmonics of ion and electron cyclotron frequencies propagating across an external steady magnetic field is carried out in the case of weak plasma spatial dispersion when the thermal velocities of plasma particles are much less than the phase velocities of the considered waves. These waves are eigenmodes of a planar plasma–vacuum waveguide structure that is situated in a steady magnetic field oriented parallel to the plasma surface. A cold charged-particle beam is assumed to propagate over the plasma interface. Excitation of surface X modes at the second harmonics of electron and ion cyclotron frequencies due to the beam–plasma interaction is studied analytically. The dependence of surface-type X-mode (STXM) growth rates on the considered waveguide structural parameters is also studied.

Excitation of surface cyclotron O modes by charged-particle beams

2002 ◽  
Vol 68 (2) ◽  
pp. 129-136 ◽  
Author(s):  
V. O. GIRKA
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Particle Beam ◽  
Charged Particle Beam ◽  
Plasma Surface ◽  
Charged Particle Beams ◽  
Planar Plasma ◽  
Steady Magnetic Field ◽  
Polarized Surface ◽  
Oriented Parallel

A theoretical investigation of the interaction between a charged-particle beam and ordinarily polarized surface waves at the first two harmonics of ion and electron cyclotron frequencies propagating across an external steady magnetic field is carried out. The case of weak plasma spatial dispersion when the Larmor radii of plasma particles are much less than the penetration depth of these waves into the plasma is considered. The indicated waves are eigenmodes of the planar plasma–vacuum–metal waveguide structure, which is exposed to a steady magnetic field oriented parallel to the plasma surface. It is supposed that a cold charged- particle beam propagates over the plasma surface in the vacuum region. The beam density is less than the plasma density. Excitation of these O modes at the first and second harmonics of electron and ion cyclotron frequencies caused by the both resonant beam and dissipative instabilities is studied analytically. The dependence of their growth rates on parameters of the considered waveguide structures is also examined.

HYMU 80

Alloy Digest ◽  
1971 ◽  
Vol 20 (10) ◽  
Keyword(s):  
Magnetic Field ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Heat Treating ◽  
Initial Permeability ◽  
Nickel Iron ◽  
Technology Corporation ◽  
Carpenter Technology Corporation ◽  
Low Magnetic Field ◽  
Maximum Permeability

Abstract Carpenter HYMU 80 is an unoriented 80% nickel-iron-molybdenum alloy which offers extremely high initial permeability and maximum permeability with minimum hysteresis loss at low magnetic field strengths. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-5. Producer or source: Carpenter Technology Corporation. Originally published May 1953, revised October 1971.

Low magnetic field spin flops in giant magnetoresistance multilayers

1995 ◽  
Vol 148 (1-2) ◽  
pp. 329-330 ◽  
Author(s):  
H. Kano ◽  
A. Okabe ◽  
K. Kagawa ◽  
A. Suzuki ◽  
T. Yaoi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Giant Magnetoresistance ◽  
Low Magnetic Field

scholarly journals TRANSPORT PROPERTIES OF 2D ELECTRON GAS IN AN n-InGaAs/GaAs DQW IN A VICINITY OF LOW MAGNETIC-FIELD-INDUCED HALL INSULATOR–QUANTUM HALL LIQUID TRANSITION

2007 ◽  
Vol 06 (03n04) ◽  
pp. 173-177
Author(s):  
YU. G. ARAPOV ◽  
S. V. GUDINA ◽  
G. I. HARUS ◽  
V. N. NEVEROV ◽  
N. G. SHELUSHININA ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Gas ◽  
Quantum Hall ◽  
Zero Magnetic Field ◽  
Double Quantum ◽  
Ballistic Regime ◽  
2D Electron Gas ◽  
Double Quantum Well ◽  
Liquid Transition ◽  
Low Magnetic Field

The resistivity (ρ) of low mobility dilute 2D electron gas in an n- InGaAs / GaAs double quantum well (DQW) exhibits the monotonic "insulating-like" temperature dependence (dρ/dT < 0) at T = 1.8–70 K in zero magnetic field. This temperature interval corresponds to a ballistic regime (kBTτ/ħ > 0.1–3.5) for our samples, and the electron density is on an "insulating" side of the so-called B = 0 2D metal–insulator transition. We show that the observed features of localization and Landau quantization in a vicinity of the low magnetic-field-induced insulator–quantum Hall liquid transition is due to the σxy(T) anomalous T-dependence.

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