Critical Current of the Ionization Waves and Anomaly of the Positive Column in an Axial Magnetic Field

1981 ◽  
Vol 21 (2) ◽  
pp. 77-86 ◽  
Author(s):  
M. Sato
Keyword(s):  
Magnetic Field ◽  
Critical Current ◽  
Positive Column ◽  
Axial Magnetic Field ◽  
Ionization Waves

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.

Radial variation of excited atom densities in an argon plasma column produced by a microwave surface wave

1982 ◽  
Vol 60 (3) ◽  
pp. 379-382 ◽  
Author(s):  
M. Moisan ◽  
R. Pantel ◽  
A. Ricard
Keyword(s):  
Magnetic Field ◽  
Surface Wave ◽  
Plasma Column ◽  
Positive Column ◽  
Excited Atom ◽  
Axial Magnetic Field ◽  
Argon Plasma ◽  
Gas Pressure ◽  
Radial Variation ◽  
Radial Profiles

The radial variations of radiative and metastable atom densities in an argon plasma column produced by a microwave surface wave are obtained. A large variety of radial profiles is observed as a function of wave frequency (300–1000 MHz), gas pressure (50–200 mTorr), tube diameter (17.5–34 mm) and axial magnetic field. The results differ significantly from those reported for the dc positive column, where the radial distributions keep approximately the same J0 Bessel-like profile.

Measurements of frequency of ionization waves in axial magnetic field

1976 ◽  
Vol 26 (9) ◽  
pp. 992-995 ◽  
Author(s):  
Z. Zakrzewski ◽  
T. Kopiczyński ◽  
N. Lubański ◽  
J. Studnička ◽  
M. Šícha
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Ionization Waves

EXPANSION OF LASER-PRODUCED ION BEAMS IN AN AXIAL MAGNETIC FIELD

2002 ◽  
Vol 6 (4) ◽  
pp. 8
Author(s):  
J. Wolowski ◽  
J. Badziak ◽  
P. Parys ◽  
E. Woryna ◽  
J. Krasa ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Ion Beams
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