Navegação Produção Científica por Autor "Yoon, Peter H."
Resultados 1-20 de 29
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An emission mechanism for extragalactic radio jets
(1996) [Artigo de periódico]The observed emtsswns of radio waves from extragalactic radio jets are customarily interpreted in terms of the incoherent synchrotron radiation produced by a nonthermal population of relativistic electrons (or positrons) ... -
Asymmetric solar wind electron superthermal distributions
(2008) [Artigo de periódico]Electron distributions with various degrees of asymmetry associated with the energetic tail population are commonly detected in the solar wind near 1 AU. By numerically solving one-dimensional electrostatic weak turbulence ... -
Collisional damping rates for plasma waves
(2016) [Artigo de periódico]The distinction between the plasma dynamics dominated by collisional transport versus collective processes has never been rigorously addressed until recently. A recent paper [P. H. Yoon et al., Phys. Rev. E 93, 033203 ... -
Dynamic of Langmuir wave decay in two dimensions
(2008) [Artigo de periódico]The present paper reports on the first two-dimensional 2D self-consistent solution of weak turbulence equations describing the evolution of electron-beam-plasma interaction in which quasilinear as well as nonlinear three-wave ... -
Electromagnetic weak turbulence theory revisited
(2012) [Artigo de periódico]The statistical mechanical reformulation of weak turbulence theory for unmagnetized plasmas including fully electromagnetic effects was carried out by Yoon [Phys. Plasmas 13, 022302 (2006)]. However, the wave kinetic ... -
Electrostatic weak turbulence theory for warm magnetized plasmas
(2021) [Artigo de periódico]Electrostatic weak turbulence theory for plasmas immersed in an ambient magnetic field is developed by employing a hybrid two-fluid and kinetic theories. The nonlinear susceptibility response function is calculated with ... -
Generation of harmonic Langmuir mode by beam-plasma instability
(2002) [Artigo de periódico]In this article, numerical solutions of the generalized weak turbulence equation [P. H. Yoon, Phys. Plasmas 7, 4858 (2000)] are carried out. In the generalized weak turbulence theory, the generation of the 2vpe-harmonic ... -
Generation of suprathermal electrons by collective processes in collisional plasma
(2017) [Artigo de periódico]The ubiquity of high-energy tails in the charged particle velocity distribution functions (VDFs) observed in space plasmas suggests the existence of an underlying process responsible for taking a fraction of the charged ... -
Ionospheric ion-acoustic enhancements by turbulent counterstreaming electron beam-plasma interaction
(2010) [Artigo de periódico]Ion-acoustic enhancements are investigated within the context of turbulent beam-plasma interaction processes. The analysis assumes a pair of counterstreaming electron beams interacting with the background plasma. Two-dimensional ... -
Maser-beam instability of Bernstein waves
(2000) [Artigo de periódico]The present study constitutes a continuation and improvement of the preceding work by Yoon et al. [J. Geophys. Res. 104, 19801 (1999)]. In the present discussion, an instability of Bernstein waves excited by a beam of ... -
Nonlinear development of weak beam-plasma instability
(2001) [Artigo de periódico]Nonlinear interactions of tenuous electron beam, background, unmagnetized plasma, and self-consistently generated Langmuir and ion-sound waves are analyzed in the framework of plasma weak turbulence kinetic theory. Full ... -
Nonlinear evolution of beam-plasma instability in inhomogeneous medium
(2011) [Artigo de periódico]The problem of electron-beam propagation in inhomogeneous solar wind is intimately related to the solar type II and/or type III radio bursts. Many scientists have addressed this issue in the past bymeans of quasi-linear ... -
On the dimensionally correct kinetic theory of turbulence for parallel propagation
(2015) [Artigo de periódico]Yoon and Fang [Phys. Plasmas 15, 122312 (2008)] formulated a second-order nonlinear kinetic theory that describes the turbulence propagating in directions parallel/anti-parallel to the ambient magnetic field. Their theory ... -
Particle-in-cell and weak turbulence simulations of plasma emission
(2019) [Artigo de periódico]The plasma emission process, which is the mechanism for solar type II and type III radio burst phenomena, is studied by means of particle-in-cell (PIC) and weak turbulence (WT) simulation methods. “Plasma emission” is meant ... -
Particle-in-cell simulations on spontaneous thermal magnetic field fluctuations
(2013) [Artigo de periódico]In this paper an electromagnetic particle code is used to investigate the spontaneous thermal emission. Specifically we perform particle-in-cell simulations employing a non-relativistic isotropic Maxwellian particle ... -
Plasma emission by counter-streaming electron beams
(2016) [Artigo de periódico]The radiation emission mechanism responsible for both type-II and type-III solar radio bursts is commonly accepted as plasma emission. Recently Ganse et al. suggested that type-II radio bursts may be enhanced when the ... -
Plasma emission by nonlinear electromagnetic processes
(2015) [Artigo de periódico]The plasma emission, or electromagnetic (EM) radiation at the plasma frequency and/or its harmonic(s), is generally accepted as the radiation mechanism responsible for solar type II and III radio bursts. Identification and ... -
Plasma emission by weak turbulence processes
(2014) [Artigo de periódico]The plasma emission is the radiation mechanism responsible for solar type II and type III radio bursts. The first theory of plasma emission was put forth in the 1950s, but the rigorous demonstration of the process based ... -
Quasilinear analysis of loss-cone driven weakly relativistic electron cyclotron maser instability
(1995) [Artigo de periódico]This paper presents a quasilinear analysis of the relativistic electron cyclotron maser instability. Two electron popUlations are assumed: a low-temperature background component and a more energetic loss-cone population. ... -
Quasilinear evolution of cyclotron maser instability
(1995) [Artigo de periódico]A quasilinear analysis of the relativistic electron cyclotron maser instability is presented. A background plasma is assumed to support the wave motion, while the instability is driven by a tenuous population of energetic ...
