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Research at St Andrews

3D PiC code investigations of Auroral Kilometric Radiation mechanisms

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Author(s)

K. M. Gillespie, S. L. McConville, D. C. Speirs, K. Ronald, A. D. R. Phelps, R. Bingham, A. W. Cross, C. W. Robertson, C. G. Whyte, W. He, I. Vorgul, R. A. Cairns, B. J. Kellett

School/Research organisations

Abstract

Efficient (similar to 1%) electron cyclotron radio emissions are known to originate in the X mode from regions of locally depleted plasma in the Earths polar magnetosphere. These emissions are commonly referred to as the Auroral Kilometric Radiation (AKR). AKR occurs naturally in these polar regions where electrons are accelerated by electric fields into the increasing planetary magnetic dipole. Here conservation of the magnetic moment converts axial to rotational momentum forming a horseshoe distribution in velocity phase space. This distribution is unstable to cyclotron emission with radiation emitted in the X-mode. Initial studies were conducted in the form of 2D PiC code simulations [1] and a scaled laboratory experiment that was constructed to reproduce the mechanism of AKR. As studies progressed, 3D PiC code simulations were conducted to enable complete investigation of the complex interaction dimensions. A maximum efficiency of 1.25% is predicted from these simulations in the same mode and frequency as measured in the experiment. This is also consistent with geophysical observations and the predictions of theory.

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Details

Original languageEnglish
Title of host publication15th International Congress on Plasma Physics (ICPP2010) & 13th Latin American Workshop on Plasma Physics (LAWPP2010)
Place of PublicationBristol
PublisherIOP Publishing Ltd.
Number of pages6
DOIs
Publication statusPublished - 2014
Event15th International Congress on Plasma Physics (ICPP) / 13th Latin American Workshop on Plasma Physics (LAWPP) - Santiago, Chile
Duration: 8 Aug 201013 Aug 2010

Publication series

NameJournal of Physics Conference Series
PublisherIOP PUBLISHING LTD
Volume511
ISSN (Print)1742-6588

Conference

Conference15th International Congress on Plasma Physics (ICPP) / 13th Latin American Workshop on Plasma Physics (LAWPP)
CountryChile
Period8/08/1013/08/10

    Research areas

  • Cyclotron maser radiation, Plasmas, Distributions, Driven, Space

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  1. Scaled Experiment to Investigate Auroral Kilometric Radiation Mechanisms in the Presence of Background Electrons

    McConville, S. L., Ronald, K., Speirs, D. C., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., King, M., Bryson, R., Vorgul, I., Cairns, R. A. & Kellett, B. J., 7 May 2014, 15th International Congress on Plasma Physics (ICPP2010) & 13th Latin American Workshop on Plasma Physics (LAWPP2010). Bristol: IOP Publishing Ltd., 6 p. (Journal of Physics Conference Series; vol. 511).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  2. Numerical simulation of unconstrained cyclotron resonant maser emission

    Speirs, D. C., Gillespie, K. M., Ronald, K., McConville, S. L., Phelps, A. D. R., Cross, A. W., Bingham, R., Kellett, B. J., Cairns, R. A. & Vorgul, I., 7 May 2014, 15th International Congress on Plasma Physics (ICPP2010) & 13th Latin American Workshop on Plasma Physics (LAWPP2010). Bristol: IOP Publishing Ltd., 5 p. (Journal of Physics Conference Series; vol. 511).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  3. Progress towards numerical and experimental simulations of fusion relevant beam instabilities

    King, M., Bryson, R., Ronald, K., Cairns, R. A., McConville, S. L., Speirs, D. C., Phelps, A. D. R., Bingham, R., Gillespie, K. M., Cross, A. W., Vorgul, I. & Trines, R., 7 May 2014, 15th International Congress on Plasma Physics (ICPP2010) & 13th Latin American Workshop on Plasma Physics (LAWPP2010). Bristol: IOP Publishing Ltd., 5 p. (Journal of Physics Conference Series; vol. 511).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  4. Cyclotron maser instability as a source of Auroral Kilometric Radiation

    Vorgul, I., Cairns, R. A., Bingham, R., Ronald, K., Speirs, D., McConville, S., Gillespie, K. & Phelps, A., 2012, 2012 INTERNATIONAL CONFERENCE ON MATHEMATICAL METHODS IN ELECTROMAGNETIC THEORY (MMET). USA: IEEE, p. 340-343 4 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  5. Auroral magnetospheric cyclotron emission processes: numerical and experimental simulations

    Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Bingham, R., Vorgul, I., Cairns, R. A., Cross, A. W., Robertson, C. W., Whyte, C. G., He, W. & Kellett, B. J., Jul 2011, In: Plasma Physics and Controlled Fusion. 53, 7, 11 p., 074015.

    Research output: Contribution to journalArticlepeer-review

ID: 136124739

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