Cascade and collapse of Langmuir waves in two dimensions

The temporal evolution of intense Langmuir waves in an unmagnetized plasma of two spatial dimensions is studied numerically. When the inequality W≳ (kλ e )2 is satisfied, the evolution quickly leads to a state of collapsing solitons. Here, W is the ratio of electric field energy density to the parti...

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Veröffentlicht in:	Phys. Fluids; (United States) 1978-10, Vol.21 (10), p.1766-1776
Hauptverfasser:	Nicholson, Dwight R., Goldman, Martin V.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY ELECTRIC FIELDS ENERGY KINETIC ENERGY PLASMA WAVES QUASI PARTICLES 700108 > Fusion Energy-- Plasma Research-- Wave Phenomena SOLITONS TWO-DIMENSIONAL CALCULATIONS WAVE PACKETS
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Zusammenfassung:	The temporal evolution of intense Langmuir waves in an unmagnetized plasma of two spatial dimensions is studied numerically. When the inequality W≳ (kλ e )2 is satisfied, the evolution quickly leads to a state of collapsing solitons. Here, W is the ratio of electric field energy density to the particle kinetic energy density, k is a typical Langmuir wavenumber, and λ e is the electron Debye length.
ISSN:	0031-9171 2163-4998
DOI:	10.1063/1.862093