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The simulation of plasma double-layer structures in two dimensions

Published online by Cambridge University Press:  13 March 2009

Joseph E. Borovsky  and
Glenn Joyce
Joseph E. Borovsky
Affiliation:
Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242
Glenn Joyce
Affiliation:
Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242
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Abstract

Electrostatic plasma double layers are numerically simulated by means of a magnetized 2½-dimensional particle-in-cell method, periodic in one direction and bounded by reservoirs of Maxwellian plasma in the other. The investigation of planar double layers indicates that these one-dimensional potential structures are susceptible to periodic disruption by plasma instabilities. A slight increase in the double-layer thickness with an increase in its obliqueness to the magnetic field is observed. It is noted that weak magnetization results in the double-layer electric-field alignment of particles accelerated by these potential structures and that strong magnetization results in their magnetic-field alignment. Electron-beam-excited electrostatic electron cyclotron waves and ion-beam-driven electrostatic turbulence are present in the plasmas adjacent to the double layers. The numerical simulations of spatially periodic two-dimensional double layers also exhibit cyclical instability. A morphological invariance in two-dimensional double layers with respect to the degree of magnetization implies that the potential structures scale with Debye lengths rather than with gyroradii. Ion-beam-driven electrostatic turbulence and electron-beam-driven plasma waves are again detected. A simplified one-dimensional model of oblique plasma double layers, using water-bag velocity distribution functions, is presented in an appendix.

Type
Research Article
Information
Journal of Plasma Physics , Volume 29 , Issue 1 , February 1983 , pp. 45 - 84
Copyright
Copyright © Cambridge University Press 1983

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References

REFERENCES

Abramowitz, M. & Stegun, I. A. 1964 Handbook of Mathematical Functions. Dover.Google Scholar
Borovsky, J. E. 1982 Phys. Rev. Lett. (submitted).Google Scholar
Borovsky, J. E. & Joyce, G. 1982 J. Geophys. Res. (submitted).Google Scholar
Carlqvist, P. 1979 Wave Instabilities in Space Plasmas (ed. Palmadesso, P. J. and Papadopoulos, K.), p. 83. Reidel.Google Scholar
Carlqvist, P. & Boström, R. 1970 J. Geophys. Res. 75, 7140.CrossRefGoogle Scholar
Delahay, P. 1966 Double Layer and Electrode Kinetics. Interscience.Google Scholar
Finkelstein, A. & Mauro, A. 1976 Handbook of Physiology: The Nervous System, part I, p. 161. American Physiological Society.Google Scholar
Goertz, C. K. & Joyce, G. 1975 Astrophys. Space Sci. 32, 165.Google Scholar
Gurnett, D. A. 1972 In Critical Problems of Magnetospheric Physics (ed. Dyer, E. R.). National Academy of Sciences.Google Scholar
Joyce, G. & Hubbard, R. F. 1978 J. Plasma Phys. 20, 391.CrossRefGoogle Scholar
Knorr, G. & Goertz, C. K. 1974 Astrophys. Space Sci. 31, 209.CrossRefGoogle Scholar
Knorr, G., Joyce, G. & Marcus, A. J. 1980 J. Comput. Phys. 38, 227.Google Scholar
Montgomery, D. & Joyce, G. 1969 J. Plasma Phys. 3, 1.Google Scholar
Pekarek, L. 1963 Proceedings of International Conference on Ionization Phenomena in Gases, Paris, vol. 3, p. 133.Google Scholar
Shawhan, S. D., Fälthammar, C.-G. & Block, L. P. 1978 J. Geophys. Res. 83, 1049.CrossRefGoogle Scholar
Singh, N. 1980 Plasma Phys. 22, 1.Google Scholar
Swift, D. W. 1975 J. Geophys. Res. 80, 2096.CrossRefGoogle Scholar
Swift, D. W. 1979 J. Geophys. Res. 84, 6427.CrossRefGoogle Scholar
Torvén, S. 1979 Wave Instabilities in Space Plasmas (ed. Palmadesso, P. J. and Papadopoulos, K.), p. 109. Reidel.CrossRefGoogle Scholar