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[en] Plasma instability is studied in very low density regimes in an electron beam - plasma experiment at the ion cyclotron frequency region. The electric field propagates azimuthally and exhibits an axial standing wave structure. The spatial distribution of electric potential was measured by Langmuir probes and its influence on the excitation of the instability was investigated. Potential profiles are very sensitive to the velocity distribution functions of ions and of electrons. The instability is driven by the convective effects associated with a plasma global rotation produced by the radial electric field. (D.Gy.)
Source
Bakos, J.S.; Soerlei, Zsuzsa (eds.); Eoetvoes Lorand Fizikai Tarsulat, Budapest (Hungary); Hungarian Academy of Sciences, Budapest. Central Research Inst. for Physics; 539 p; ISBN 963 372 373 6; 
; Jun 1985; p. 159-161; Koezponti Fizikai Kutato Intezet; Budapest (Hungary); 17. International conference on phenomena in ionized gases; Budapest (Hungary); 8-12 Jul 1985; 3 refs.; 4 figs.
; Jun 1985; p. 159-161; Koezponti Fizikai Kutato Intezet; Budapest (Hungary); 17. International conference on phenomena in ionized gases; Budapest (Hungary); 8-12 Jul 1985; 3 refs.; 4 figs.