Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-17T23:02:18.843Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydromagnetic waves in a cylindrical plasma: an experiment

Published online by Cambridge University Press:  28 March 2006

D. F. Jephcott  and
P. M. Stocker
D. F. Jephcott
Affiliation:
Culham Laboratory, Berkshire
P. M. Stocker
Affiliation:
Culham Laboratory, Berkshire
Get access Rights & Permissions [Opens in a new window]

Abstract

In a previous paper (Woods 1962) a theory is presented which leads to a general dispersion relation for hydromagnetic waves in a dissipative plasma contained in a cylindrical tube. In the present paper experimental observations are compared with the predictions of this theory.

An experiment is described in which torsional hydromagnetic waves are excited in a gas discharge. Measurements of the wave velocity and damping are compared with solutions of the dispersion equation which are computed from measured values of the plasma parameters. The results are consistent with the theory, and good numerical agreement is obtained by assuming a loss of particles to the tube walls. There is evidence of a cut-off in wave propagation in the region of ion cyclotron resonance.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 13 , Issue 4 , August 1962 , pp. 587 - 596
Copyright
© 1962 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Allen, T. K. et al. 1959 Phys. Rev. Letters, 2, 383.
De Silva, A. W. 1961 Ph.D. Thesis, Univ. California Rad. Lab. Rep. no. 9601.
Ellis, R. A. et al. 1960 Phys. Fluids, 3, 468.
Hooke, W. M. et al. 1961 Phys. Fluids, 4, 1131.
Hornbeck, J. A. 1951 Phys. Rev. 84, 615.
Jephcott, D. F. 1959 Nature, Lond., 183, 1652.
Johnson, E. O. & Malter, L. 1950 Phys. Rev. 80, 58.
Lehnert, B. 1954 Phys. Rev. 94, 815.
Lundquist, S. 1949 Nature, Lond., 164, 145.
Nagao, S. et al. 1960 J. Phys. Soc. Japan, 15, 735.
Sinelnikov, K. D. et al. 1961 Salzburg Conference, paper no. CN-10/231.
Spitzer, L. 1956 Physics of Fully Ionized Gases. New York: Interscience Publishers Inc.
Turnbull, A. H. et al. 1955 A.E.R.E. GP/R1793.
Wilcox, J. M. et al. 1961 Phys. Fluids, 4, 1506.
Woods, L. C. 1961 Culham Laboratory Report CLM-R13.
Woods, L. C. 1962 J. Fluid Mech. 13, 570.