نتایج جستجو برای: electron plasma waves

تعداد نتایج: 747494  

Journal: :Physics of Plasmas 2021

The multi-species plasma of natural or laboratory origin is often considered to host nonlinear ion-acoustic waves. We present calculations ion fluxes induced by waves in a consisting multiple populations, electrons, and dust. following models are considered: an electron-ion with cold ions, bi-ion two types warm positively charged dusty plasma. It found that the plasma, wave-induced flux directe...

Journal: :Physical review letters 2013
A I Smolyakov W Frias I D Kaganovich Y Raitses

It is shown that ion acoustic waves in plasmas with E0×B0 electron drift become unstable due to the closure of plasma current in the chamber wall. Such unstable modes may enhance both near-wall conductivity and turbulent electron transport in plasma devices with E0×B0 electron drift and unmagnetized ions. It is shown that the instability is sensitive to the wall material: a high value of the di...

1998
Luigi Foschini

In this paper, a meteoric plasma is analyzed from a physical viewpoint, with particular emphasis on its interaction with radio waves. The attention is drawn to some macroscopic characteristics of a meteoric plasma and it is shown that the electron–ion collision frequency is not negligible, as commonly thought.

2004
C. Lupu D. D. Tskhakaya M. Cercek R. Schrittwieser G. Popa

The problem of sheath formation in front of a conductive planar plate inserted into the plasma is formulated. Initially, the plate is assumed to be neutral. It is shown that the charging-up process of the plate is accompanied by the excitation of electron plasma waves.

Journal: :Physical review 2021

The surface of a topological insulator hosts Dirac electronic states with the spin-momentum locking, which constrains spin orientation perpendicular to electron momentum. As result, collective plasma excitations in interacting liquid manifest themselves as coupled charge- and spin-waves. Here we demonstrate that presence component enables effective coupling between waves at interfaces insulatin...

2002
G. Paesold R. Kallenbach

A new mechanism for acceleration and enrichment of He during impulsive solar flares is presented. Low-frequency electromagnetic plasma waves excited by the Electron Firehose Instability (EFI) can account for the acceleration of ions up to 1 MeV amu energies as a single stage process. The EFI arises as a direct consequence of the free energy stored in a temperature anisotropy (T e ‖ > T e ⊥) of ...

2017
C Briand Pierre Henri S Hoang C. Briand P. Henri

We report the peculiar interaction of two type III bursts observed in the solar wind. As electron beams propagating on the same magnetic field lines cross, a spectacular depletion of the type III radio emission is observed. We combine observations from the WAVES experiment on board the STEREO mission together with kinetic plasma simulations to study the extinction of type III radio emission res...

1996
S. Kartal L. N. Tsintsadze V. I. Berezhiani

The dynamics of relativistically strong electromagnetic (EM) wave propagation in hot electron-positron plasma is investigated. The possibility of finding localized stationary structures of EM waves is explored. It is shown that under certain conditions the EM wave forms a stable localized soliton-like structures where plasma is completely expelled from the region of EM field location.

2014
S. D. SCHULTZ A. K. RAM A. BERS

The power coupled to electron Bernstein waves in a triplet mode conversion resonator from a fast X-mode at the plasma edge in NSTX is shown to be > 80% for fc, < f < 2fc,. The EBW damping in the plasma is strong and localized and, thus, should be useful for heating, current drive, or profile control.

2001
C. Cattell C. Neiman J. Dombeck J. Crumley J. Wygant C. A. Kletzing W. K. Peterson F. S. Mozer

Solitary waves with large electric fields (up to 100’s of mV/m) have been observed throughout the magnetosphere and in the bow shock. We discuss observations by Polar at high altitudes (∼ 4–8RE), during crossings of the plasma sheet boundary and cusp, and new measurements by Polar at the equatorial magnetopause and by Cluster near the bow shock, in the cusp and at the plasma sheet boundary. We ...

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