Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

When a beam of electrons encounters an increasing magnetic field along its vector of motion, conservation of the magnetic moment results in the formation of a crescent or horseshoe shaped velocity distribution. A scenario analogous to this occurs in the terrestrial auroral zone where particles are accelerated into the polar regions of the Earth's magnetic dipole and expand adiabatically in velocity space. The resultant horseshoe shaped velocity distribution has been shown to be unstable with respect to a cyclotron-maser type instability (Bingham and Cairns, 2000, Vorgul et al., 2004 and Speirs et al., 2004). This instability has been postulated as the mechanism responsible for auroral kilometric radiation and also non-thermal radiation from other astrophysical bodies (Bingham et al., 2001). In this paper we describe a laboratory experiment to investigate the propagation of an electron beam subject to a magnetic compression of up to a factor of 35.
Original languageEnglish
Title of host publicationThe Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics
Place of PublicationNew Jersey, USA
PublisherIEEE
Pages97-98
Number of pages1
Volume1
ISBN (Print)0780393481
DOIs
Publication statusPublished - 2005

Fingerprint

microwave frequencies
velocity distribution
magnetic compression
auroral zones
nonthermal radiation
radiation
masers
magnetic dipoles
encounters
polar regions
cyclotrons
conservation
astrophysics
simulation
magnetic moments
electron beams
propagation
magnetic fields
electrons

Keywords

  • electron beams
  • magnetic fields
  • particle accelerators
  • particle beam dynamics

Cite this

Speirs, D., Ronald, K., Phelps, A. D. R., Cross, A. W., Bingham, R., Vorgul, I., ... IEEE (2005). Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms. In The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics (Vol. 1, pp. 97-98). New Jersey, USA: IEEE. https://doi.org/10.1109/ICIMW.2005.1572425
Speirs, David ; Ronald, K. ; Phelps, A.D.R. ; Cross, A.W. ; Bingham, R. ; Vorgul, I. ; Cairns, R.A. ; Whyte, C.G. ; Robertson, C.W. ; IEEE. / Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms. The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics. Vol. 1 New Jersey, USA : IEEE, 2005. pp. 97-98
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abstract = "When a beam of electrons encounters an increasing magnetic field along its vector of motion, conservation of the magnetic moment results in the formation of a crescent or horseshoe shaped velocity distribution. A scenario analogous to this occurs in the terrestrial auroral zone where particles are accelerated into the polar regions of the Earth's magnetic dipole and expand adiabatically in velocity space. The resultant horseshoe shaped velocity distribution has been shown to be unstable with respect to a cyclotron-maser type instability (Bingham and Cairns, 2000, Vorgul et al., 2004 and Speirs et al., 2004). This instability has been postulated as the mechanism responsible for auroral kilometric radiation and also non-thermal radiation from other astrophysical bodies (Bingham et al., 2001). In this paper we describe a laboratory experiment to investigate the propagation of an electron beam subject to a magnetic compression of up to a factor of 35.",
keywords = "electron beams, magnetic fields, particle accelerators, particle beam dynamics",
author = "David Speirs and K. Ronald and A.D.R. Phelps and A.W. Cross and R. Bingham and I. Vorgul and R.A. Cairns and C.G. Whyte and C.W. Robertson and IEEE",
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Speirs, D, Ronald, K, Phelps, ADR, Cross, AW, Bingham, R, Vorgul, I, Cairns, RA, Whyte, CG, Robertson, CW & IEEE 2005, Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms. in The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics. vol. 1, IEEE, New Jersey, USA, pp. 97-98. https://doi.org/10.1109/ICIMW.2005.1572425

Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms. / Speirs, David; Ronald, K.; Phelps, A.D.R.; Cross, A.W.; Bingham, R.; Vorgul, I.; Cairns, R.A.; Whyte, C.G.; Robertson, C.W.; IEEE.

The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics. Vol. 1 New Jersey, USA : IEEE, 2005. p. 97-98.

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms

AU - Speirs, David

AU - Ronald, K.

AU - Phelps, A.D.R.

AU - Cross, A.W.

AU - Bingham, R.

AU - Vorgul, I.

AU - Cairns, R.A.

AU - Whyte, C.G.

AU - Robertson, C.W.

AU - IEEE

N1 - Strathprints' policy is to record up to 8 authors per publication, plus any additional authors based at the University of Strathclyde. More authors may be listed on the official publication than appear in the Strathprints' record.

PY - 2005

Y1 - 2005

N2 - When a beam of electrons encounters an increasing magnetic field along its vector of motion, conservation of the magnetic moment results in the formation of a crescent or horseshoe shaped velocity distribution. A scenario analogous to this occurs in the terrestrial auroral zone where particles are accelerated into the polar regions of the Earth's magnetic dipole and expand adiabatically in velocity space. The resultant horseshoe shaped velocity distribution has been shown to be unstable with respect to a cyclotron-maser type instability (Bingham and Cairns, 2000, Vorgul et al., 2004 and Speirs et al., 2004). This instability has been postulated as the mechanism responsible for auroral kilometric radiation and also non-thermal radiation from other astrophysical bodies (Bingham et al., 2001). In this paper we describe a laboratory experiment to investigate the propagation of an electron beam subject to a magnetic compression of up to a factor of 35.

AB - When a beam of electrons encounters an increasing magnetic field along its vector of motion, conservation of the magnetic moment results in the formation of a crescent or horseshoe shaped velocity distribution. A scenario analogous to this occurs in the terrestrial auroral zone where particles are accelerated into the polar regions of the Earth's magnetic dipole and expand adiabatically in velocity space. The resultant horseshoe shaped velocity distribution has been shown to be unstable with respect to a cyclotron-maser type instability (Bingham and Cairns, 2000, Vorgul et al., 2004 and Speirs et al., 2004). This instability has been postulated as the mechanism responsible for auroral kilometric radiation and also non-thermal radiation from other astrophysical bodies (Bingham et al., 2001). In this paper we describe a laboratory experiment to investigate the propagation of an electron beam subject to a magnetic compression of up to a factor of 35.

KW - electron beams

KW - magnetic fields

KW - particle accelerators

KW - particle beam dynamics

UR - http://dx.doi.org/10.1109/ICIMW.2005.1572425

U2 - 10.1109/ICIMW.2005.1572425

DO - 10.1109/ICIMW.2005.1572425

M3 - Chapter

SN - 0780393481

VL - 1

SP - 97

EP - 98

BT - The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics

PB - IEEE

CY - New Jersey, USA

ER -

Speirs D, Ronald K, Phelps ADR, Cross AW, Bingham R, Vorgul I et al. Laboratory simulation at microwave frequencies of auroral kilometric radiation emission mechanisms. In The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics. Vol. 1. New Jersey, USA: IEEE. 2005. p. 97-98 https://doi.org/10.1109/ICIMW.2005.1572425