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Laser-Driven Instabilities in Long Scalelength Plasmas - II
Published in M.B. Hooper, Laser-Plasma Interactions 4, 2020
Improved models of Raman scattering require a better understanding of its modification by low frequency density fluctuations in the plasma. Ion density fluctuations are generated by SBS and/or the nonlinear evolution of the Raman-generated electron plasma waves. As is apparent, a low frequency density fluctuation with wave number ki couples an electron plasma wave with wave number kp into other plasma waves with wave number kp±nki, where n is an integer. This coupling can lead to an efficient transfer of energy into shorter wavelength, damped plasma waves.
Radio sounding of the circumsolar and interplanetary plasma
Published in Oleg I. Yakovlev, Space Radio Science, 2002
Of great importance for studying the solar wind are plasma waves, since wave phenomena play a significant role in the energetics of plasma flows. Radio observations have provided evidence for the occurrence of intense Alfv�nic [36-38, 152] and magnetosonic [56, 58, 59, 107] waves in the solar wind plasma. Magnetosonic waves, which are generated by intense Alfv�nic waves in the region of the maximum acceleration of the solar wind plasma, are damped out in circumsolar space.
Plasma waves beyond the solar system
Published in B. Raneesh, Nandakumar Kalarikkal, Jemy James, Anju K. Nair, Plasma and Fusion Science, 2018
Plasma waves are omnipresent and thus are a unique feature of space plasmas as they propagate energy across different space regions. They transport particles and accelerate them to attain high energies. They transmit information about the local plasma properties from regions not accessible for in situ measurements and are specific to the phenomena/instabilities as their properties depend upon the background plasma prevailing at that location.
The chaotic, supernonlinear, periodic, quasiperiodic wave solutions and solitons with cascaded system
Published in Waves in Random and Complex Media, 2021
Nauman Raza, Adil Jhangeer, Saima Arshed, Mustafa Inc
In this paper, the cascaded system is studied with GVD, STD, self-phase modulation (SPM) and cross-phase modulation (XPM) under Kerr non-linearity. We employed two integration architecture to extricate exact soliton solutions. The rapid convergent approximation method has been executed to reveal soliton solutions [20,21] whereas the unified method has been applied to find a kind of solitary wave solutions. Moreover, supernonlinear waves, quasiperiodic waves and chaotic behavior are also studied by introducing the perturbed term. The supernonlinear homoclinic trajectory of waves under the cascaded system is shown in a phase plane and confirmed by the potential plot by setting the physical parameters for different values. These types of waves exist in the form of plasma waves of different physical nature, e.g. electrostatic (ionacoustic) and MHD (Alfvén) waves. For more details, see also [23–25].
A full wave model of high-harmonic EMIC wave propagation in sheared magnetic fields
Published in Waves in Random and Complex Media, 2020
Wave-particle interactions are important processes in the magnetosphere which control the dynamics of the energetic particles [1]. Plasma waves can be generated by the solar wind perturbations as well as the magnetospheric instabilities. The excited waves and particles can exchange energy via resonance and stochastization [2–5]. Pitch angle and temperature anisotropy of energetic particles, in the context of cold dense plasma, can generate parallel propagating electromagnetic plasma waves including whistler mode waves due to the electron anisotropy and electromagnetic ion cyclotron (EMIC) waves driven by proton anisotropy [4]. The excited EMIC waves cause energization and loss of magnetospheric particles through resonant wave-particle interactions [1,6–9].
Plasma Waves Around Venus and Mars
Published in IETE Technical Review, 2021
Plasma waves are primarily the propagating oscillations which are generated in plasma or which have their wave characteristics significantly modified by the presence of plasma. These waves may be electromagnetic (EM) or electrostatic (ES) and are generated by the conversion of plasma and energetic particle kinetic energy into wave energy through a variety of plasma-particle interactions. In turn, these waves may interact with the particles and modify the particle populations within the plasma.