Laboratory Study of Nonlinear Trapping of Magnetized Langmuir Waves Inside a Density Depletion

doi:10.1103/PHYSREVLETT.98.195001

Title: Laboratory Study of Nonlinear Trapping of Magnetized Langmuir Waves Inside a Density Depletion

Full Record
Other Related Research

Abstract

The formation of a small-scale plasma density depletion region extended along the ambient magnetic field and caused by the nonlinear interaction of the upper-hybrid plasma waves with a magnetoplasma has been observed under laboratory conditions modeling the ionospheric heating experiments. Plasma waves are trapped inside the depletion due to their specific dispersion properties. The threshold of the nonlinear wave trapping significantly increases in the vicinity of the harmonics of the electron gyrofrequency.

Authors:

Starodubtsev, Mikhail V.; Nazarov, Vladimir V.; Kostrov, Alexander V. ^[1]

Institute of Applied Physics, Russian Academy of Science, 46 Ulyanov Street, 603950 Nizhny Novgorod (Russian Federation)

Publication Date:: Fri May 11 00:00:00 EDT 2007

OSTI Identifier:: 20951354

Resource Type:: Journal Article

Resource Relation:: Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 19; Other Information: DOI: 10.1103/PhysRevLett.98.195001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONS; GYROFREQUENCY; HARMONICS; LANGMUIR FREQUENCY; MAGNETIC FIELDS; NONLINEAR PROBLEMS; PLASMA; PLASMA DENSITY; PLASMA SIMULATION; PLASMA WAVES; TRAPPING

Citation Formats


                    Starodubtsev, Mikhail V., Nazarov, Vladimir V., and Kostrov, Alexander V.. Laboratory Study of Nonlinear Trapping of Magnetized Langmuir Waves Inside a Density Depletion.  United States: N. p., 2007. 
        Web.  doi:10.1103/PHYSREVLETT.98.195001.

Copy to clipboard


                    Starodubtsev, Mikhail V., Nazarov, Vladimir V., & Kostrov, Alexander V.. Laboratory Study of Nonlinear Trapping of Magnetized Langmuir Waves Inside a Density Depletion.  United States.  doi:10.1103/PHYSREVLETT.98.195001.

Copy to clipboard


                    Starodubtsev, Mikhail V., Nazarov, Vladimir V., and Kostrov, Alexander V.. Fri .  
        "Laboratory Study of Nonlinear Trapping of Magnetized Langmuir Waves Inside a Density Depletion".  United States.  
        doi:10.1103/PHYSREVLETT.98.195001.

Copy to clipboard


                    
@article{osti_20951354,

  title        = {Laboratory Study of Nonlinear Trapping of Magnetized Langmuir Waves Inside a Density Depletion},

  author       = {Starodubtsev, Mikhail V. and Nazarov, Vladimir V. and Kostrov, Alexander V.},

  abstractNote = {The formation of a small-scale plasma density depletion region extended along the ambient magnetic field and caused by the nonlinear interaction of the upper-hybrid plasma waves with a magnetoplasma has been observed under laboratory conditions modeling the ionospheric heating experiments. Plasma waves are trapped inside the depletion due to their specific dispersion properties. The threshold of the nonlinear wave trapping significantly increases in the vicinity of the harmonics of the electron gyrofrequency.},

  doi          = {10.1103/PHYSREVLETT.98.195001},

  journal      = {Physical Review Letters},

  number       = 19,

  volume       = 98,

  place        = {United States},

  year         = {Fri May 11 00:00:00 EDT 2007},

  month        = {Fri May 11 00:00:00 EDT 2007}

}

Copy to clipboard

Journal Article:

DOI: 10.1103/PHYSREVLETT.98.195001

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Nonlinear trapping and self-guiding of magnetized Langmuir waves due to thermal plasma filamentation

Journal Article Nazarov, Vladimir V. ; Starodubtsev, Mikhail V. ; Kostrov, Alexander V. - Physics of Plasmas

Nonlinear interaction of Langmuir waves with a laboratory magnetoplasma has been studied under the conditions relevant to the ionospheric heating experiments. Self-guiding of magnetized Langmuir waves is observed at critical plasma density ({omega}={omega}{sub p}): Langmuir waves are trapped inside a narrow, magnetic-field-aligned plasma density depletion region, which is formed by trapped waves due to thermal plasma nonlinearity, i.e., due to local plasma heating and consequent thermodiffusion. Magnetized Langmuir waves are trapped inside the depletion region through their specific dispersion properties; this fact has been shown using the kinetically modified dispersion relation. The threshold of the nonlinear wave trapping exhibits significantmore »« less
DOI: 10.1063/1.2822161
Depletion kinetics in the photobleaching trapping reaction inside a flat microchannel

Journal Article Park, Sung Hyun ; Peng, Hailin ; Kopelman, Raoul ; ... - Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

The diffusion-limited kinetics of the growth of a depletion zone around a static point trap in a thin, long channel geometry was studied using a laser photobleaching experiment of fluorescein dye inside a flat rectangular capillary. The dynamics of the depletion zone was monitored by the {theta} distance, defined as the distance from the trap to the point where the reactant concentration has been locally depleted to the specified survival fraction ({theta}) of its initial bulk value. A dimensional crossover from two dimensions to one dimension, due to the finite width of the reaction zone, was observed. We define amore »« less
DOI: 10.1103/PhysRevE.71.031107
Threshold for electron trapping nonlinearity in Langmuir waves

Journal Article Strozzi, D. J. ; Williams, E. A. ; Hinkel, D. E. ; ... - Physics of Plasmas

We assess when electron trapping nonlinearity is expected to be important in Langmuir waves. The basic criterion is that the inverse of the detrapping rate {nu}{sub d} of electrons in the trapping region of velocity space must exceed the bounce period of deeply trapped electrons, {tau}{sub B}{identical_to}(n{sub e}/{delta}n){sup 1/2}2{pi}/{omega}{sub pe}. A unitless figure of merit, the 'bounce number'N{sub B}{identical_to}1/{nu}{sub d}{tau}{sub B}, encapsulates this condition and defines a trapping threshold amplitude for which N{sub B}=1. The detrapping rate is found for convective loss (transverse and longitudinal) out of a spatially finite Langmuir wave. Simulations of driven waves with a finite transversemore »« less
DOI: 10.1063/1.4767644
Ion Velocity Distribution Function Investigated Inside an Unstable Magnetized Plasma Exhibiting a Rotating Nonlinear Structure

Journal Article Rebont, C. ; Claire, N. ; Pierre, Th. ; ... - Physical Review Letters

The frequent situation where a strongly nonlinear rotating structure develops in a linear magnetized plasma column is investigated experimentally with emphasis on the ion velocity distribution function (IVDF). Most often, a mode m=2 appears exhibiting a large density and potential perturbation with angular frequency slightly above the ion cyclotron frequency. For the first time the spatiotemporal evolution of the IVDF is studied using time-resolved laser induced fluorescence to explore the ion's interaction with the nonlinear wave propagating inside the column and at the origin of plasma transport outside the limiter. The ion fluid exhibits an alternance from azimuthal to radialmore »« less
DOI: 10.1103/PHYSREVLETT.106.225006
Electron scattering and nonlinear trapping by oblique whistler waves: The critical wave intensity for nonlinear effects

Journal Article Artemyev, A. V., E-mail: ante0226@gmail.com ; Vasiliev, A. A. ; Mourenas, D. ; ... - Physics of Plasmas

In this paper, we consider high-energy electron scattering and nonlinear trapping by oblique whistler waves via the Landau resonance. We use recent spacecraft observations in the radiation belts to construct the whistler wave model. The main purpose of the paper is to provide an estimate of the critical wave amplitude for which the nonlinear wave-particle resonant interaction becomes more important than particle scattering. To this aim, we derive an analytical expression describing the particle scattering by large amplitude whistler waves and compare the corresponding effect with the nonlinear particle acceleration due to trapping. The latter is much more rare butmore »« less
DOI: 10.1063/1.4897945

Similar Records