The radial diffusion of charged particles in the positive column of discharge in a longitudinal magnetic field

Vacuum ◽  
1971 ◽  
Vol 21 (1-2) ◽  
pp. 64
Keyword(s):  
Magnetic Field ◽  
Positive Column ◽  
Longitudinal Magnetic Field ◽  
Charged Particles ◽  
Radial Diffusion

The Internal Magnetic Field of the Positive Column in a Longitudinal Magnetic Field

1975 ◽  
Vol 38 (1) ◽  
pp. 295-295
Author(s):  
Yoji Nagai ◽  
Shinogo Imazu ◽  
Takesuke Maruyama ◽  
Takeo Maruyama
Keyword(s):  
Magnetic Field ◽  
Positive Column ◽  
Longitudinal Magnetic Field ◽  
Internal Magnetic Field

Threshold speed for two-dimensional confinement of charged particles in certain axisymmetric magnetic fields

2018 ◽  
Vol 96 (5) ◽  
pp. 519-523 ◽  
Author(s):  
K. Kabin ◽  
G. Kalugin ◽  
E. Spanswick ◽  
E. Donovan
Keyword(s):  
Magnetic Field ◽  
Power Law ◽  
Critical Speed ◽  
Longitudinal Magnetic Field ◽  
Strong Dependence ◽  
Charged Particles ◽  
Transcendental Equation ◽  
Power Exponent ◽  
Magnetic Field Magnitude ◽  
The Magnetic Field

In this paper we discuss conditions under which charged particles are confined by an axisymmetric longitudinal magnetic field with power law dependence on the radius. We derive a transcendental equation for the critical speed corresponding to the threshold between bounded and unbounded trajectories of the particles. This threshold speed shows strong dependence on the direction, and this dependence becomes more prominent as the exponent of the power law increases. The equation for threshold speed can be solved exactly for several specific values of the power exponent, but in general it requires a numerical treatment. Remarkably, if the magnetic field magnitude decreases more slowly than the inverse of the radius, charged particles remain confined no matter how large their energies may be.

scholarly journals Distribution of the charged particles of a gas-discharge laser plasma in a transverse magnetic field. II. Experimental study

2021 ◽  
Vol 2059 (1) ◽  
pp. 012014
Author(s):  
S A Martsinukov ◽  
D K Kostrin
Keyword(s):  
Magnetic Field ◽  
Mathematical Model ◽  
Experimental Study ◽  
Transverse Magnetic Field ◽  
Positive Column ◽  
Charged Particles ◽  
Transverse Magnetic ◽  
Gas Discharge ◽  
Gas Mixture ◽  
Discharge Laser

Abstract The paper presents an experimental verification of the adequacy of a physical and mathematical model describing the influence of an external transverse magnetic field on the distribution of the charged particles in a positive column of a gas discharge. A gas-discharge laser located in a transverse magnetic field was used to conduct the study. The vacuum installation allows pumping out the system and feeding the gas mixture into it under a certain pressure. The data obtained during the experiments differ from the calculated ones by no more than 4–5 %.

Modes of the Screw Instability in a Positive Column with Longitudinal Magnetic Field

1965 ◽  
Vol 36 (3) ◽  
pp. 754-758 ◽  
Author(s):  
Satoshi Itoh ◽  
Motoichi Kawaguchi ◽  
Kenzo Yamamoto
Keyword(s):  
Magnetic Field ◽  
Positive Column ◽  
Longitudinal Magnetic Field
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