DTIC ADA111456: The S3 4 Ionospheric Irregularities pdf

DTIC ADA111456: The S3 4 Ionospheric Irregularities

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The pulsed plasma probe technique has been expanded to include simultaneous determinations of absolute electron density, density fluctuations, electron temperature, and mean ion mass with resolution limited only by probe geometry, sheath size, and telemetry. The technique has been designed to test for coupling of electron density variations and ion composition irregularities in multi-component plasmas by the comparison of electron density fluctuation power spectra PN(k) and a newly developed diagnostic parameter, the mean ion mass fluctuation spectra Delta M sub i bar/M sub i bar approaches the limit of P sub M(k). In addition, the experiment extends satellite-borne irregularity spectral analyses down to the 5-20 meter range while attempting to synthesize F-region plasma instability processes on the basis of N sub e, T sub e Delta N sub e, P sub N and P sub M. Initial results demonstrate the expanded diagnostic capability for high spatial resolution measurements of mean ion mass and provide experimental evidence for the role of ion composition in multi-stepped plasma instability processes.

Limited analyses of the two power spectral elements raises hopes for the differential between plasma mechanisms that can lead to similar indices in PN. (Author

• Creator/s: Defense Technical Information Center
• Date: 2/11/1982
• Year: 1982
• Book Topics/Themes: DTIC Archive, Szuszczewicz, E P, NAVAL RESEARCH LAB WASHINGTON DC, *IONOSPHERE, *PLASMAS(PHYSICS), IONS, PROBES, STABILITY, ELECTRON DENSITY, POWER SPECTRA, VARIATIONS, ARTIFICIAL SATELLITES

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