Gas rotation in discharges in a longitudinal magnetic field

This paper reviews theoretical and experimental work on gas rotation in discharges in a longitudinal magnetic field. There is abundant evidence that such a field causes plasma-dust structures to rotate in the plane perpendicular to itself. This rotation cannot be explained solely by the dragging action of azimuthally moving ions. Drag is also exerted by the gas rotating under the moment produced by the Ampere force that arises in discharge regions with a nonuniform magnetic field near solenoid end faces and due to the narrowing of the discharge channel cross section. In a stratified discharge in a uniform magnetic field, an eddy electric current due to the noncollinearity of the plasma-density and temperature gradients brings the gas to rotation.

Keywords: discharge in a magnetic field, gas rotation, Ampere force moment, eddy electric current in strata
PACS: 52.27. Lw, 52.30.−q, 52.35. Mw
DOI: 10.3367/UFNe.0185.201506c.0613
URL: https://ufn.ru/en/articles/2015/6/c/
Web of Science

000361014200003
ADS NASA

2015PhyU...58..574N
Citation: Nedospasov A V "Gas rotation in discharges in a longitudinal magnetic field" Phys. Usp. 58 574–578 (2015)

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Received: 23rd, February 2015, accepted: 17th, March 2015

Оригинал: Недоспасов А В «Вращение газа в разрядах в продольном магнитном поле» УФН 185 613–617 (2015); DOI: 10.3367/UFNr.0185.201506c.0613

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