Projects per year
Abstract
Cyclotron maser instabilities are important in space, astrophysical, and laboratory plasmas. While extensive work has been done on these instabilities, most of it deals with homogeneous plasmas with uniform magnetic fields while in practice, of course, the systems are generally inhomogeneous. Here we expand on our previous work [R. A. Cairns, I. Vorgul, and R. Bingham, Phys. Rev. Lett. 101, 215003 (2008)] in which we showed that localized regions of instability can exist in an inhomogeneous plasma and that the way in which waves propagate away from this region is not necessarily obvious from the homogeneous plasma dispersion relation. While we consider only a simple ring distribution in velocity space, because of its tractability, the ideas may point toward understanding the behavior in the presence of more realistic distributions. The main object of the present work is to move away from consideration of the local dispersion relation and show how global growing eigenmodes can be constructed. (C) 2011 American Institute of Physics. [doi:10.1063/1.3551697]
Original language | English |
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Pages (from-to) | 022902 |
Number of pages | 5 |
Journal | Physics of Plasmas |
Volume | 18 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 2011 |
Keywords
- auroral kilometric radiation
- electron distributions
- particle-acceleration
- generation
- bursts
Fingerprint
Dive into the research topics of 'Cyclotron maser radiation from inhomogeneous plasmas'. Together they form a unique fingerprint.Projects
- 4 Finished
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Grant in Aid of Supporting the Technological Plasma Workshop 2009
Cross, A. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/12/09 → 28/02/10
Project: Research
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Instabilities in non-thermal plasmas
Phelps, A. (Principal Investigator), Bingham, R. (Co-investigator), Ronald, K. (Co-investigator) & Speirs, D. (Research Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/04/09 → 31/03/13
Project: Research
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Generation of high power, high frequency radiation using high brightness pseudospark-sourced beam
Cross, A. (Principal Investigator), He, W. (Co-investigator), Phelps, A. (Co-investigator), Ronald, K. (Co-investigator) & Zhang, L. (Researcher)
EPSRC (Engineering and Physical Sciences Research Council)
1/10/08 → 31/03/12
Project: Research
Activities
- 1 Hosting an academic visitor
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R. A. Cairns
Phelps, A. (Host)
1 Jan 2002 → 31 Dec 2015Activity: Hosting a visitor types › Hosting an academic visitor