Skip to main content Accessibility help
×
Home

Resonantly unstable off-angle hydromagnetic waves

  • C. F. Kennel (a1) and H. V. Wong (a1)

Abstract

We consider semi-quantitatively the cyclotron resonance instability of ion cyclotron and magnetosonic waves propagating at an angle to the magnetic field in an infinite uniform plasma. The velocity distributions of electrons and ions consist of a dense cold component and a diffuse high-energy tail. If the high-energy protons are sufficiently intense and their pitch angle distributions sufficiently anisotropic, instability occurs for those waves propagating parallel to the magnetic field. If the spectrum of resonant protons is sufficiently hard, a reasonably large cone of propagating angles about the magnetic field can be unstable. Observed fluxes of trapped protons in the magnetosphere should destabilise the ion cyclotron wave at a lower intensity threshold than for at least one class of electrostatic waves.

Copyright

References

Hide All
Allis, W. P., Buchsbaum, S. J. & Bees, A. 1963 Waves in Anisotropic Plasmas. M.I.T. Press.
Andronov, A. A. & Trakhtengerts, V. V. 1964 Geomagnetism and Aeronomy 4, 181. (English translation.)
Angerami, J. J. & Carpenter, D. L. 1966 J. Geophys. Res. 71, 711.
Brice, N. 1964 J. Geophys. Res. 69, 4515.
Carpenter, D. L. 1966 J. Geophys. Res. 71, 693.
Cornwall, J. M. 1965 J. Geophys. Res. 70, 61.
Cornwall, J. M. 1966 J. Geophys. Res. 71, 2185.
Davis, L. R. & Williamson, J. M. 1963 Space Research, Vol. III, Proceedings of Third Annual COSPAR Meeting. Ed. Priester, W.. London: Pergamon Press.
Frank, L. A. 1965 J. Geophys. Res. 70, 1593.
Galeev, A. A. 1966 Soviet Physics—JETP 22, 466.
Kennel, C. F. & Engelmann, F. 1966 Phys. Fluids 9.
Kennel, C. F. & Petschek, H. E. 1966 J. Geophys. Res. 71, 1.
Kennel, C. F. & Wong, H. V. 1967 J. Plasma Phys. 1, 75.
Pearlstein, L. D., Rosenbluth, M. N. & Chang, D. B. 1966 Phys. Fluids 9, 953.
Post, R. F. & Rosenbluth, M. N. 1966 Phys. Fluids 9, 730.
Rosenbluth, M. N. & Post, R. F. 1965 Phys. Fluids 8, 547.
Sagdeev, R. Z. & Shafronov, V. D. 1961 Soviet Physics—JETP 12, 130.
Stix, T. H. 1962 The Theory of Plasma Waves. New York: McGraw-Hill.
Vedenov, A. A., Velikhov, E. P. & Sagdeev, R. Z. 1965 Nuclear Fusion, Suppl. 2, 465.
Watanabe, T. 1965 J. Geophys. Res. 70, 5839.
Watson, G. N. 1962 A Treatise on the Theory of Bessel Functions, 2nd Edition. Cambridge University Press.
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Resonantly unstable off-angle hydromagnetic waves

  • C. F. Kennel (a1) and H. V. Wong (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.