Nonlocal theory of electromagnetic wave decay into two electromagnetic waves in a rippled density plasma channel

Journal Article · Sat Dec 15 00:00:00 EST 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4773029· OSTI ID:22072613

Sati, Priti; Tripathi, V K ^[1]

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1. Indian Institute of Technology, Hauz Khas, Delhi 110054 (India)

Parametric decay of a large amplitude electromagnetic wave into two electromagnetic modes in a rippled density plasma channel is investigated. The channel is taken to possess step density profile besides a density ripple of axial wave vector. The density ripple accounts for the momentum mismatch between the interacting waves and facilitates nonlinear coupling. For a given pump wave frequency, the requisite ripple wave number varies only a little w.r.t. the frequency of the low frequency decay wave. The radial localization of electromagnetic wave reduces the growth rate of the parametric instability. The growth rate decreases with the frequency of low frequency electromagnetic wave.

• OSTI ID: 22072613
• Journal Information: Physics of Plasmas, Vol. 19, Issue 12; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
ELECTROMAGNETIC RADIATION
NONLINEAR PROBLEMS
PARAMETRIC INSTABILITIES
PLASMA DENSITY
PLASMA WAVES
PUMPING