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Field structure of collapsing wave packets in 3D strong Langmuir turbulenceA simple model is constructed for the electric fields in the collapsing wave packets found in 3D simulations of driven and damped isotropic strong Langmuir turbulence. This model, based on a spherical-harmonic decomposition of the electrostatic potential, accounts for the distribution of wave-packet shapes observed in the simulations, particularly the predominance of oblate wave packets. In contrast with predictions for undamped and undriven subsonic collapse of scalar fields, oblate vector-field wave packets do not flatten during collapse but, instead, remain approximately self-similar and rigid.
Document ID
19890051971
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Newman, D. L.
(Colorado Univ. Boulder, CO, United States)
Robinson, P. A.
(Colorado Univ. Boulder, CO, United States)
Goldman, M. V.
(Colorado, University Boulder, United States)
Date Acquired
August 14, 2013
Publication Date
May 1, 1989
Publication Information
Publication: Physical Review Letters
Volume: 62
ISSN: 0031-9007
Subject Category
Plasma Physics
Accession Number
89A39342
Funding Number(s)
CONTRACT_GRANT: NSF ATM-85-11906
CONTRACT_GRANT: NSF ATM-88-13255
CONTRACT_GRANT: NAGW-91
CONTRACT_GRANT: NSG-7282
Distribution Limits
Public
Copyright
Other

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