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Title: Analysis of a cyclotron maser instability in cylindrical geometry

Abstract

Cyclotron maser instability is known to be one of the main mechanisms of coherent radio emission in space and laboratory plasmas. This paper investigates a particular case of such an instability induced by a horseshoe- or crescent-shaped electron velocity distribution function, which is produced when an electron beam propagates in a convergent magnetic field, whether it is Earth's magnetic field or one introduced in a laboratory experiment. The instability is analyzed in cylindrical geometry which is relevant to auroral kilometric radiation and to a laboratory experiment. Exact modeling of TE and TM anisotropic modes for circular electronic beam shows its high growth rate for modes with almost perpendicular propagation.

Authors:
; ;  [1];  [2]
  1. School of Mathematics and Statistics, University of St Andrews, Saint Andrews, Fife KY16 9SS (United Kingdom)
  2. (United Kingdom)
Publication Date:
OSTI Identifier:
20782402
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 12; Journal Issue: 12; Other Information: DOI: 10.1063/1.2139506; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANISOTROPY; BEAM-PLASMA SYSTEMS; COMPUTERIZED SIMULATION; CYLINDRICAL CONFIGURATION; DISTRIBUTION FUNCTIONS; ELECTRON BEAMS; ELECTRONS; EMISSION; GEOMETRY; MAGNETIC FIELDS; MASERS; PLASMA; PLASMA INSTABILITY; PLASMA SIMULATION

Citation Formats

Vorgul, I., Cairns, R.A., Bingham, R., and CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX. Analysis of a cyclotron maser instability in cylindrical geometry. United States: N. p., 2005. Web. doi:10.1063/1.2139506.
Vorgul, I., Cairns, R.A., Bingham, R., & CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX. Analysis of a cyclotron maser instability in cylindrical geometry. United States. doi:10.1063/1.2139506.
Vorgul, I., Cairns, R.A., Bingham, R., and CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX. Thu . "Analysis of a cyclotron maser instability in cylindrical geometry". United States. doi:10.1063/1.2139506.
@article{osti_20782402,
title = {Analysis of a cyclotron maser instability in cylindrical geometry},
author = {Vorgul, I. and Cairns, R.A. and Bingham, R. and CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX},
abstractNote = {Cyclotron maser instability is known to be one of the main mechanisms of coherent radio emission in space and laboratory plasmas. This paper investigates a particular case of such an instability induced by a horseshoe- or crescent-shaped electron velocity distribution function, which is produced when an electron beam propagates in a convergent magnetic field, whether it is Earth's magnetic field or one introduced in a laboratory experiment. The instability is analyzed in cylindrical geometry which is relevant to auroral kilometric radiation and to a laboratory experiment. Exact modeling of TE and TM anisotropic modes for circular electronic beam shows its high growth rate for modes with almost perpendicular propagation.},
doi = {10.1063/1.2139506},
journal = {Physics of Plasmas},
number = 12,
volume = 12,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}