Two dimensional kinetic analysis of electrostatic harmonic plasma waves
Abstract
Electrostatic harmonic Langmuir waves are virtual modes excited in weakly turbulent plasmas, first observed in early laboratory beamplasma experiments as well as in rocketborne active experiments in space. However, their unequivocal presence was confirmed through computer simulated experiments and subsequently theoretically explained. The peculiarity of harmonic Langmuir waves is that while their existence requires nonlinear response, their excitation mechanism and subsequent early time evolution are governed by essentially linear process. One of the unresolved theoretical issues regards the role of nonlinear waveparticle interaction process over longer evolution time period. Another outstanding issue is that existing theories for these modes are limited to onedimensional space. The present paper carries out two dimensional theoretical analysis of fundamental and (first) harmonic Langmuir waves for the first time. The result shows that harmonic Langmuir wave is essentially governed by (quasi)linear process and that nonlinear waveparticle interaction plays no significant role in the time evolution of the wave spectrum. The numerical solutions of the twodimensional wave spectra for fundamental and harmonic Langmuir waves are also found to be consistent with those obtained by direct particleincell simulation method reported in the literature.
 Authors:
 Instituto de Física, UFRGS, 91501970 Porto Alegre, RS (Brazil)
 IPST, University of Maryland, College Park, Maryland 20742 (United States)
 (Korea, Republic of)
 Publication Date:
 OSTI Identifier:
 22598987
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAMS; COMPUTERIZED SIMULATION; EXCITATION; LANGMUIR FREQUENCY; NONLINEAR PROBLEMS; NUMERICAL SOLUTION; ONEDIMENSIONAL CALCULATIONS; PARTICLE INTERACTIONS; PARTICLES; PLASMA WAVES; ROCKETS; SPECTRA; TURBULENCE; TWODIMENSIONAL CALCULATIONS
Citation Formats
FonsecaPongutá, E. C., Ziebell, L. F., Gaelzer, R., Yoon, P. H., and SSR, Kyung Hee University, Yongin, Gyeonggi 446701. Two dimensional kinetic analysis of electrostatic harmonic plasma waves. United States: N. p., 2016.
Web. doi:10.1063/1.4953898.
FonsecaPongutá, E. C., Ziebell, L. F., Gaelzer, R., Yoon, P. H., & SSR, Kyung Hee University, Yongin, Gyeonggi 446701. Two dimensional kinetic analysis of electrostatic harmonic plasma waves. United States. doi:10.1063/1.4953898.
FonsecaPongutá, E. C., Ziebell, L. F., Gaelzer, R., Yoon, P. H., and SSR, Kyung Hee University, Yongin, Gyeonggi 446701. 2016.
"Two dimensional kinetic analysis of electrostatic harmonic plasma waves". United States.
doi:10.1063/1.4953898.
@article{osti_22598987,
title = {Two dimensional kinetic analysis of electrostatic harmonic plasma waves},
author = {FonsecaPongutá, E. C. and Ziebell, L. F. and Gaelzer, R. and Yoon, P. H. and SSR, Kyung Hee University, Yongin, Gyeonggi 446701},
abstractNote = {Electrostatic harmonic Langmuir waves are virtual modes excited in weakly turbulent plasmas, first observed in early laboratory beamplasma experiments as well as in rocketborne active experiments in space. However, their unequivocal presence was confirmed through computer simulated experiments and subsequently theoretically explained. The peculiarity of harmonic Langmuir waves is that while their existence requires nonlinear response, their excitation mechanism and subsequent early time evolution are governed by essentially linear process. One of the unresolved theoretical issues regards the role of nonlinear waveparticle interaction process over longer evolution time period. Another outstanding issue is that existing theories for these modes are limited to onedimensional space. The present paper carries out two dimensional theoretical analysis of fundamental and (first) harmonic Langmuir waves for the first time. The result shows that harmonic Langmuir wave is essentially governed by (quasi)linear process and that nonlinear waveparticle interaction plays no significant role in the time evolution of the wave spectrum. The numerical solutions of the twodimensional wave spectra for fundamental and harmonic Langmuir waves are also found to be consistent with those obtained by direct particleincell simulation method reported in the literature.},
doi = {10.1063/1.4953898},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = 2016,
month = 6
}

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