Title: Radial Particle Loss in a Highly Ionized Cylindrical Plasma Column
Authors: 黃廣志
Issue Date: Feb-1973
Publisher: 交大學刊編輯委員會
Abstract: The statistical properties of the plasma fluctuations in a long plasma column produced by a hollow cathode arc discharge show that there exist different states of weak plasma turbulence. The transition between these states occurs as a results of charges in the confining magnetic field, the background gas pressure, and the boundary conditions. Associated with such transitions are radial changes in the plasma confinement. A sudden jump in the radial particle loss rates is manifested by the increase of the current collected by Buchelnikova ring-collectors and by the change in the radial density profiles measured by electrostatic probes. A linear stability analysis identifies the weak turbulence with the unstable electrostatic ion-cyclotron mode. This mode appears to be unstable in the parameter regions where the inverse gradientlength, k,the perpendicular wave number k⊥ and the ion Larmor radius ρH at the sum temperature Te+Ti are related as1/ρH≧k≧ k⊥. The radial particles loss rate predicted by this analysis agrees with the observed one.
URI: http://hdl.handle.net/11536/137484
Journal: 交大學刊
Volume: 6
Issue: 1
Begin Page: 11
End Page: 28
Appears in Collections:Science Bulletin National Chiao-Tung University

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  1. HT001302-02.pdf