Bellan, P. M. and Stasiewicz, K. (1998) Fine-scale cavitation of ionospheric plasma caused by inertial Alfvén wave ponderomotive force. Physical Review Letters, 80 (16). pp. 3523-3526. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:BELprl98
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Deep, very narrow magnetic-field-aligned density depletions were observed by the Freja spacecraft during auroral oval crossings. These cavities have perpendicular width of the order of the electron skin depth c/ωpe and are associated with low-frequency electromagnetic perturbations and with discrete auroral structures. We demonstrate here that these cavities are likely produced by the ponderomotive force of inertial Alfvén waves.
|Additional Information:||©1998 The American Physical Society. Received 25 September 1997. The Freja project was financed by the Swedish National Space Board and the German Ministry for Science and Technology. P.M.B. was supported in part by the National Science Foundation.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||11 Oct 2006|
|Last Modified:||26 Dec 2012 09:05|
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