Ionospheric ion-acoustic enhancements by turbulent counterstreaming electron beam-plasma interaction

Citation:
Ionospheric ion-acoustic enhancements by turbulent counterstreaming electron beam-plasma interaction, Pavan, J., Ziebell L. F., Yoon P. H., and Gaelzer R. , Journal of Geophysical Research, February, Volume 115, Number A2, p.A02310, (2010)

Abstract:

Ion-acoustic enhancements are investigated within the context of turbulent beam-plasma interaction processes. The analysis assumes a pair of counterstreaming electron beams interacting with the background plasma. Two-dimensional velocity space and two-dimensional wave number space are assumed for the analysis, with physical parameters that characterize typical ionospheric conditions. The solutions of the electrostatic weak turbulence theory show that the ion-acoustic wave levels are significantly enhanced when the computation is initialized with a pair of counterstreaming beams in contrast to a single beam. We suggest that this finding is highly relevant for the observed ion-acoustic enhancements in the Earth's ionosphere that are known to be correlated with auroral activity.

Notes:

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