Nonthermal effects on the Landau damping in Lorentzian plasmas

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The Landau damping of waves propagating in a plasma modeled by a Lorentzian (kappa) distribution with a spectral index k is investigated. In the high-frequency range, the dispersion relation of the electron Langmuir wave is obtained. The Landau damping rate equation is shown to have a thermal correction term that has not been found in previous studies. The dispersion relation of ion-acoustic waves is also investigated for the low-frequency range. Dampings of both the electron Langmuir and the ion-acoustic waves are suppressed as the spectral index k increases; i.e., the nonthermal effect decreases.

Original languageEnglish
Pages (from-to)1258-1261
Number of pages4
JournalJournal of the Korean Physical Society
Volume46
Issue number5
StatePublished - 2005 May 1

Fingerprint

ion acoustic waves
Landau damping
frequency ranges
electrons
damping
low frequencies

Keywords

  • Ion-acoustic wave
  • Landau damping
  • Langmuir wave
  • Lorentzian distribution

Cite this

@article{b4cf5204134947cba37d1208174343e4,
title = "Nonthermal effects on the Landau damping in Lorentzian plasmas",
abstract = "The Landau damping of waves propagating in a plasma modeled by a Lorentzian (kappa) distribution with a spectral index k is investigated. In the high-frequency range, the dispersion relation of the electron Langmuir wave is obtained. The Landau damping rate equation is shown to have a thermal correction term that has not been found in previous studies. The dispersion relation of ion-acoustic waves is also investigated for the low-frequency range. Dampings of both the electron Langmuir and the ion-acoustic waves are suppressed as the spectral index k increases; i.e., the nonthermal effect decreases.",
keywords = "Ion-acoustic wave, Landau damping, Langmuir wave, Lorentzian distribution",
author = "Myoung-Jae Lee",
year = "2005",
month = "5",
day = "1",
language = "English",
volume = "46",
pages = "1258--1261",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
number = "5",

}

Nonthermal effects on the Landau damping in Lorentzian plasmas. / Lee, Myoung-Jae.

In: Journal of the Korean Physical Society, Vol. 46, No. 5, 01.05.2005, p. 1258-1261.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nonthermal effects on the Landau damping in Lorentzian plasmas

AU - Lee, Myoung-Jae

PY - 2005/5/1

Y1 - 2005/5/1

N2 - The Landau damping of waves propagating in a plasma modeled by a Lorentzian (kappa) distribution with a spectral index k is investigated. In the high-frequency range, the dispersion relation of the electron Langmuir wave is obtained. The Landau damping rate equation is shown to have a thermal correction term that has not been found in previous studies. The dispersion relation of ion-acoustic waves is also investigated for the low-frequency range. Dampings of both the electron Langmuir and the ion-acoustic waves are suppressed as the spectral index k increases; i.e., the nonthermal effect decreases.

AB - The Landau damping of waves propagating in a plasma modeled by a Lorentzian (kappa) distribution with a spectral index k is investigated. In the high-frequency range, the dispersion relation of the electron Langmuir wave is obtained. The Landau damping rate equation is shown to have a thermal correction term that has not been found in previous studies. The dispersion relation of ion-acoustic waves is also investigated for the low-frequency range. Dampings of both the electron Langmuir and the ion-acoustic waves are suppressed as the spectral index k increases; i.e., the nonthermal effect decreases.

KW - Ion-acoustic wave

KW - Landau damping

KW - Langmuir wave

KW - Lorentzian distribution

UR - http://www.scopus.com/inward/record.url?scp=19944423407&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:19944423407

VL - 46

SP - 1258

EP - 1261

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - 5

ER -