Suppression of plasma instabilities by the feedback method

A new method of suppressing plasma instabilities with the aid of automatic control systems has been recently developed. The feasibility of using this method to stabilize a continuous medium is brought about by the fact that not all of the tremendous number of degrees of freedom of the medium are actually excited, but only several of the modes. The method is most suitable in practice for the suppression of large-scale oscillations. Two stabilization methods have been observed. An external control system can be used to alter the phase velocities of the waves in the plasma, thus upsetting their resonant interaction with the particles and with one another. This suppresses strong instabilities with large growth rates, particularly hydrodynamic ones (flute, helical, etc.). To eliminate instabilities of the dissipative type with small growth rates it suffices to use an external system to introduce additional damping of the plasma oscillations. The possibility of turning individual modes on or off makes feedback an outstanding tool for the study of nonlinear properties of oscillations, anoalous transport phenomena, and others. The first experiments in this direction have already been performed.

PACS: 52.35.Py
DOI: 10.1070/PU1977v020n09ABEH005461
URL: https://ufn.ru/en/articles/1977/9/d/
Citation: Arsenin V V, Chuyanov V A "Suppression of plasma instabilities by the feedback method" Sov. Phys. Usp. 20 736–762 (1977)

BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Оригинал: Арсенин В В, Чуянов В А «Подавление неустойчивостей плазмы методом обратных связей» УФН 123 83–129 (1977); DOI: 10.3367/UFNr.0123.197709d.0083

Cited by (19) Similar articles (20) ↓

M.S. Ioffe, B.B. Kadomtsev “Plasma containment in adiabatic traps” 13 225–246 (1970)
S.M. Osovets “Dynamic methods of confinement and stabilization of hot plasma” 17 239–262 (1974)
L.M. Gorbunov “Hydrodynamics of plasma in a strong high-frequency field” 16 217–235 (1973)
S.I. Anisimov, A.M. Prokhorov, V.E. Fortov “Application of high-power lasers to study matter at ultrahigh pressures” 27 181–205 (1984)
E.A. Kaner, V.M. Yakovenko “Hydrodynamic instability in solid-state plasma” 18 21–36 (1975)
P.S. Landa, N.A. Miskinova, Yu.V. Ponomarev “lonization waves in low-temperature plasmas” 23 813–834 (1980)
A.V. Timofeev “Oscillations of inhomogeneous flows of plasma and liquids” 13 632–646 (1971)
L.M. Kovrizhnykh, S.V. Shchepetov “Present state of the theory of the MHD equilibrium and stability of stellarator plasmas” 29 343–363 (1986)
G.M. Zaslavskii “Nonlinear waves and their interaction” 16 761–776 (1974)
A.V. Timofeev “Cyclotron oscillations of plasma in an inhomogeneous magnetic field” 16 445–458 (1974)
A.A. Vedenov, E.P. Velikhov, R.Z. Sagdeev “STABILITY OF PLASMA” 4 332–369 (1961)
A.M. Prokhorov, S.I. Anisimov, P.P. Pashinin “Laser thermonuclear fusion” 19 547–560 (1976)
S.I. Vainshtein “Modification of a magnetic field by plasma mechanisms” 19 987–1006 (1976)
L.I. Gudzenko, L.A. Shelepin, S.I. Yakovlenko “Amplification in recombining plasmas (plasma lasers)” 17 848–863 (1975)
V.N. Lugovoi, A.M. Prokhorov “Theory of the propagation of high-power laser radiation in a nonlinear medium” 16 658–679 (1974)
N.S. Erokhin, S.S. Moiseev “Problems of the theory of linear and nonlinear transformation of waves in inhomogeneous media” 16 64–81 (1973)
S.A. Akhmanov, A.P. Sukhorukov, R.V. Khokhlov “Self-focusing and diffraction of light in a Nonlinear medium” 10 609–636 (1968)
V.P. Silin “Anomalous nonlinear dissipation of high-frequency radio waves in plasma” 15 742–758 (1973)
B.M. Smirnov “Kinetics of electrons in gases and condensed systems” 45 1251–1286 (2002)
B.E. Meierovich “Toward the realization of electromagnetic collapse” 29 506–529 (1986)

The list is formed automatically.