A kinetic cyclotron maser instability associated with a hollow beam of electrons
Article first published online: 7 DEC 2012
Copyright 1984 by the American Geophysical Union.
Volume 19, Issue 2, pages 519–525, March-April 1984
How to Cite
1984), A kinetic cyclotron maser instability associated with a hollow beam of electrons, Radio Sci., 19(2), 519–525, doi:10.1029/RS019i002p00519., and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 13 SEP 1983
- Manuscript Received: 3 MAR 1983
A kinetic cyclotron maser instability associated with a hollow-beam distribution function is studied. The instability differs from that discussed for the gyrotron device in two respects: in the present case the momentum dispersion is substantial, and furthermore there exists a low-energy background plasma. On the basis of physical arguments we can demonstrate that the hollow-beam distribution is far more unstable than the loss cone distribution which has been extensively investigated in recent years. A criterion for maximum growth rate is established on the basis of consideration of the resonance ellipse. The validity of this criterion is supported by the results of numerical calculation.