Resistive loading by a finite plasma cylinder

Hasti, D.E.; Oakes, M. E.; Schlüter, H.

doi:10.1017/s0022377800005420

Cited by 11 publications

(1 citation statement)

References 9 publications

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“…One typical experimental device exploited is an axially symmetric configuration with an axial magnetic field, where the plasma waves are excited by an oscillator coil coupling inductively to the plasma. As a main diagnostic tool the measurement of the plasma loading resistance has been used (HASTI et al, 1970;LEPPERT, 1975) which gives information about the total power dissipated by the plasma. There were strong indications that at high r.f.-amplitudes power dissipation is governed by cooperative effects.…”

Section: Introductionmentioning

confidence: 99%

Detection of anomalous plasma resistivity at high RF-power densities

Himmel¹,

Kamp²

1985

Plasma Phys. Control. Fusion

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In a linear magnetoplasma. excited with r.f.-waves in the region of the lower hybrid resonance, radial power density profiles are recorded by use of a modulation technique involving time-resolved intensity measurements of He1 spectral lines. Computations of these profiles within the framework of a linear fluid description-neglecting temperature and density gradients-show typical geometric structures, which are not verified by the observations. Discrepancies are resolved if anomalous plasma resistivity is taken into account. This behaviour is characterized by an effective collision frequency V e f f for momentum loss, the value of which can be determined by comparing the experimental data with the theoretical predictions. The plasma loading resistances calculated with v,ff are in good agreement with the results of electrical measurements.

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Section: Introductionmentioning

confidence: 99%

Detection of anomalous plasma resistivity at high RF-power densities

Himmel¹,

Kamp²

1985

Plasma Phys. Control. Fusion

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Plasma heating by lower hybrid resonance

1974

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Radio-frequency fields in magnetoactive plasma

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McDaniel

Oakes

1974

Journal of Applied Physics

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Electric field componenets produced by a single-turn current sheet concentric with a finite magnetoactive plasma cylinder are calculated for frequencies corresponding to resonant peaks in the series loading resistance near the lower hybrid resonance. The radial electric fields are found to be quite large and to penetrate well into the plasma. Axial electric fields are not negligible for a variety of conditions. Expressions for the field components permit calculations for any azimuthally symmetric distribution of current in the sheet.

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Resistive loading by a finite plasma cylinder

Abstract: The loading resistance of a coil-plasma system operated near the lower hybrid resonance in hydrogen and argon has been measured. The results are consistent with the predictions of a theoretical model that includes finite plasma effects.

Cited by 11 publications

References 9 publications

Detection of anomalous plasma resistivity at high RF-power densities

Detection of anomalous plasma resistivity at high RF-power densities

Plasma heating by lower hybrid resonance

Radio-frequency fields in magnetoactive plasma

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