Publication

Coaxial Plasma Gun in the High-Density Regime and Injection into a Helical Field

1994
Journal Articles

Abstract

A modified CPG in the high density regime of 20-70mT of He was investigated. The injection of the plasmatorus into a driftspace was studied by diamagnetical diagnostics both with and without helical bias, where the inner electrode was continued into the driftspace by a central conductor. Quasi-tokamak geometry is obtained (q almost-equal-to 3; l(j) almost-equal-to 1.2; beta(p) almost-equal-to .7). Mean speed of torus in driftspace: 2.2cm/musec; which is in very good agreement with the MHD model derived. Discussion of: (1) general phenomena, (2) second half-period breakdown with autopreionisation, (3) prevention of transv. expansion by rarefaction waves of Mach 50 supersonic flow, (4) stability and homogeneity enhancement, (5) agreement with model, (6) X-points & breakdown dependence. The findings are important for future designs of injectors for magn. confinement.

Official source

https://infoscience.epfl.ch/entities/publication/4e8baf04-1bfc-4f12-b985-3759106527c8

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1994
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4e8baf04-1bfc-4f12-b985-3759106527c8

About this result

Related concepts (32)

Hypersonic speed

In aerodynamics, a hypersonic speed is one that exceeds five times the speed of sound, often stated as starting at speeds of Mach 5 and above. The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since individual physical changes in the airflow (like molecular dissociation and ionization) occur at different speeds; these effects collectively become important around Mach 5-10.

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Coaxial Plasma Gun in the High-Density Regime and Injection into a Helical Field

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