scholarly journals Vlasov-Poisson simulations of electrostatic parametric instability for localized Langmuir wave packets in the solar wind

2010 ◽  
Vol 115 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
P. Henri ◽  
F. Califano ◽  
C. Briand ◽  
A. Mangeney
Keyword(s):  
Solar Wind ◽  
Wave Packets ◽  
Parametric Instability ◽  
Langmuir Wave

Phase coupling in Langmuir wave packets: Possible evidence of three-wave interactions in the upstream solar wind

1996 ◽  
Vol 23 (1) ◽  
pp. 109-112 ◽  
Author(s):  
S. D. Bale ◽  
D. Burgess ◽  
P. J. Kellogg ◽  
K. Goetz ◽  
R. L. Howard ◽  
...  
Keyword(s):  
Solar Wind ◽  
Wave Packets ◽  
Langmuir Wave ◽  
Phase Coupling ◽  
Wave Interactions ◽  
Upstream Solar Wind

scholarly journals Do Langmuir wave packets in the solar wind collapse?

2012 ◽  
Vol 117 (A9) ◽  
pp. n/a-n/a ◽  
Author(s):  
D. B. Graham ◽  
Iver H. Cairns ◽  
D. R. Prabhakar ◽  
R. E. Ergun ◽  
D. M. Malaspina ◽  
...  
Keyword(s):  
Solar Wind ◽  
Wave Packets ◽  
Langmuir Wave

scholarly journals On the probability distribution function of small-scale interplanetary magnetic field fluctuations

2004 ◽  
Vol 22 (10) ◽  
pp. 3751-3769 ◽  
Author(s):  
R. Bruno ◽  
V. Carbone ◽  
L. Primavera ◽  
F. Malara ◽  
L. Sorriso-Valvo ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Robust Statistics ◽  
Interplanetary Space ◽  
Parametric Instability ◽  
Field Vector ◽  
Small Scale ◽  
Magnetic Fluctuations ◽  
Mhd Turbulence ◽  
The One

Abstract. In spite of a large number of papers dedicated to the study of MHD turbulence in the solar wind there are still some simple questions which have never been sufficiently addressed, such as: a) Do we really know how the magnetic field vector orientation fluctuates in space? b) What are the statistics followed by the orientation of the vector itself? c) Do the statistics change as the wind expands into the interplanetary space? A better understanding of these points can help us to better characterize the nature of interplanetary fluctuations and can provide useful hints to investigators who try to numerically simulate MHD turbulence. This work follows a recent paper presented by some of the authors which shows that these fluctuations might resemble a sort of random walk governed by Truncated Lévy Flight statistics. However, the limited statistics used in that paper did not allow for final conclusions but only speculative hypotheses. In this work we aim to address the same problem using more robust statistics which, on the one hand, forces us not to consider velocity fluctuations but, on the other hand, allows us to establish the nature of the governing statistics of magnetic fluctuations with more confidence. In addition, we show how features similar to those found in the present statistical analysis for the fast speed streams of solar wind are qualitatively recovered in numerical simulations of the parametric instability. This might offer an alternative viewpoint for interpreting the questions raised above.

Nonlinear Landau damping of large-amplitude Langmuir waves and formation of standing nonlinear waves

1980 ◽  
Vol 23 (3) ◽  
pp. 475-482 ◽  
Author(s):  
V. P. Pavlenko
Keyword(s):  
Thermal Plasma ◽  
Nonlinear Waves ◽  
Wave Packets ◽  
Langmuir Wave ◽  
Landau Damping ◽  
Characteristic Scale ◽  
Langmuir Waves ◽  
Slowing Down ◽  
Mechanism Of Interaction ◽  
Nonlinear Landau Damping

The interaction of nonlinear Langmuir wave packets corresponding to periodic solutions of the nonlinear Schrödinger equation with thermal plasma particles is considered. The mechanism of interaction is nonlinear Landau damping. The wave packets are slowed down owing to interaction but their amplitudes remain essentially unchanged. The characteristic scale lengths of the slowing down are determined.

Decay instability of cirularly polarized waves into cirularly polarized and Langmuir waves in a magnetized plasma

1974 ◽  
Vol 11 (1) ◽  
pp. 99-109 ◽  
Author(s):  
Kai Fong Lee
Keyword(s):  
Pump Wave ◽  
Parametric Instability ◽  
Perturbation Expansion ◽  
Langmuir Wave ◽  
Magnetized Plasma ◽  
Multiple Time ◽  
Langmuir Waves ◽  
Left Hand ◽  
Electromagnetic Pump ◽  
Polarized Waves

A study is made of a parametric instability in a magnetized plasma in which an electromagnetic pump wave of either right- or left-hand circular polarization decays into a Langmuir wave and another circularly polarized wave, all with wave vectors colinear with the external magnetic field. The analysis is based on a multiple-time-scale perturbation expansion of the fluid equations, incorporating the effects of temperature, collisions, and the spatial variation of the pump wave. The threshold values of the pump field intensity required for instability and the growth rates above threshold are calculated.

Theory for low-frequency modulated Langmuir wave packets

1992 ◽  
Vol 19 (22) ◽  
pp. 2187-2190 ◽  
Author(s):  
Iver H. Cairns ◽  
P. A. Robinson
Keyword(s):  
Wave Packets ◽  
Low Frequency ◽  
Langmuir Wave
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