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Strongly nonlinear evolution of low-frequency wave packets in a dispersive plasmaThe evolution of strongly nonlinear, strongly modulated wave packets is investigated in a dispersive plasma using a hybrid numerical code. These wave packets have amplitudes exceeding the strength of the external magnetic field, along which they propagate. Alfven (left helicity) wave packets show strong steepening for p < 1, while fast (fight heIicity) wave packets hardly steepen for any beta. Substantial regions of opposite helicity form on the leading side of steepened Alfven wave packets. This behavior differs qualitatively from that exhibited by the solutions to the derivative nonlinear Schrodinger (DNLS) equation.
Document ID
19930064366
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Vasquez, Bernard J.
(Maryland Univ. College Park, United States)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Physics of Fluids B
Volume: 5
Issue: 7 pt
ISSN: 0899-8221
Subject Category
Plasma Physics
Funding Number(s)
CONTRACT_GRANT: NSF ATM-88-14163
CONTRACT_GRANT: NAG5-1101
Distribution Limits
Public
Copyright
Other
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