A new instrument for the study of wave-particle interactions in space: One-chip Wave-Particle Interaction Analyzer
Tóm tắt
Wave-particle interactions in a collisionless plasma have been analyzed in several past space science missions but direct and quantitative measurement of the interactions has not been conducted. We here introduce the Wave-Particle Interaction Analyzer (WPIA) to observe wave-particle interactions directly by calculating the inner product between the electric field of plasma waves and of plasma particles. The WPIA has four fundamental functions: waveform calibration, coordinate transformation, time correction, and interaction calculation. We demonstrate the feasibility of One-chip WPIA (O-WPIA) using a Field Programmable Gate Array (FPGA) as a test model for future science missions. The O-WPIA is capable of real-time processing with low power consumption. We validate the performance of the O-WPIA including determination of errors in the calibration and power consumption.
Từ khóa
Tài liệu tham khảo
Buckley, A. M., M. P. Gough, H. Alleyne, K. Yearby, and I. Willis, Measurement of wave-particle interactions in the magnetosphere using the DWP particle correlator, Proceedings of Cluster-II workshop, 303–306, 2000.
Buckley, A. M., M. P. Gough, H. Alleyne, K. Yearby, and S. N. Walker, First measurements of electron modulations by the particle correlator expeiments on cluster, Proceedings of the Les Woolliscroft Memorial Conference/Sheffield Space Plasma Meeting: Multipoint Measurements versus Theory, European Space Agency SP492, 19–26, 2001.
ERG working group, Software-type wave-particle interaction analyzer, Proposal of the ERG mission, 62–65, Japan Aerospace Exploration Agency, 2008 (in Japanese, submitted).
Ergun, R. E., C. W. Carlson, J. P. McFadden, J. H. Clemmons, and M. H. Boehm, Langmuir wave growth and electron bunching: Results from a wave-particle correlator, J. Geophys. Res., 96, 225–238, 1991.
Ergun, R. E., J. P. McFadden, and C. W. Carlson, Wave-particle correlator instrument design, in Measurement Techniques in Space Plasmas: Particles, AGU, Geophysical Monograph 102, 325–331, 1998.
Gough, M. P., Particle correlator instruments in space: Performance; limitation, successes, and the future, in Measurement Techniques in Space Plasmas: Particles, AGU, Geophysical Monograph 102, 333–338, 1998.
Gough, M. P., D. A. Hardy, M. R. Oberhardt, W. J. Burke, L. C. Gentile, B. McNeil, K. Bounar, D. C. Thompson, and W. J. Raitt, Correlator measurements of megahertz wave-particle interactions during electron beam operations on STS, J. Geophys. Res., 100(A11), 21,561–21,575, 1995.
Kletzing, C. A., S. R. Bounds, J. Labelle, and M. Samara, Observation of the reactive component of Langmuir wave phase bunched electrons, Geophys. Res. Lett., 43, doi:10.1029/2004GL021175, 2005.
Matsumoto, H., H. Kojima, T. Miyatake, Y. Omura, M. Okada, I. Nagano, and M. Tsutsui, Electrostatic solitary waves (ESW) in the magnetotail: BEN wave forms observed by GEOTAIL, Geophys. Res. Lett., 21, 2915–2918, 1994a.
Matsumoto, H., I. Nagano, R. R. Anderson, H. Kojima, K. Hashimoto, M. Tsutsui, T. Okada, I. Kimura, Y. Omura, and M. Okada, Plasma wave observations with GEOTAIL spacecraft, J. Geomag. Geoelectr., 46, 59–95, 1994b.
SCOPE working group, One-chip wave-particle interaction analyzer, Proposal of the SCOPE mission, 449–458, Japan Aerospace Exploration Agency, 2008 (in Japanese, submitted).