Experimental studies of wave-particle interactions in space using particle correlators: results and future developments

Gough, M. P., Buckley, A. M., Carozzi, Tobia and Beloff, N. (2003) Experimental studies of wave-particle interactions in space using particle correlators: results and future developments. Advances in Space Research, 32. pp. 407-416. ISSN 0273-1177

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The technique of particle correlation measures directly electron modulations that result from naturally occurring and actively stimulated wave-particle interactions in space plasmas. In the past this technique has been used for studies of beam-plasma interactions, caused by both natural auroral electron beams via sounding rockets and by artificially generated electron beams on Space Shuttle missions (STS-46, STS-75). It has also been applied to studies of how electrons become energised by waves injected from in-situ transmitters (e.g OEDIPUS-C sounding rocket). All four ESA Cluster-II spacecraft launched in 2000 to study the outer magnetosphere, cusp, and bow shock were implemented with electron correlators. Here the prevalent weaker wave-particle interactions have been more difficult to extract, however, the application of new statistical algorithms has permitted these correlators to provide a novel insight into the plasma turbulence that occurs. Present work involves technical improvements to both sensor design and correlator implementation that enable many electron energy-angle combinations to be simultaneously monitored for wave-particle interactions. A broad energy-angle range spectrograph connected to a multi-channel, multi-frequency range FPGA implemented array of correlators is scheduled to fly early 2004. Neural network techniques previously flown on STS-46 and STS-75, and statistical tests developed for Cluster-II will be used on-board to select data to be transmitted.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
School of Engineering and Informatics > Informatics
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Depositing User: Natalia Beloff
Date Deposited: 09 Nov 2006
Last Modified: 27 Aug 2019 09:15
URI: http://sro.sussex.ac.uk/id/eprint/444
Google Scholar:5 Citations

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