Trapping of plasmons in ion holes

P. K. Shukla, B. Eliasson

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We present analytical and numerical studies of a new electron plasma wave interaction mechanism, which reveals trapping of Langmuir waves in ion holes associated with nonisothermal ion distribution functions. This Langmuir ion hole interaction is a unique kinetic phenomenon governed by two second nonlinear differential equations in which the Langmuir wave electric field and ion hole potential are coupled in a complex fashion. Numerical analyses of our nonlinearly coupled differential equations exhibit trapping of localized Langmuir wave envelops in the ion hole, which is either standing or moving with sub-or super ion thermal speed. The resulting ambipolar potential of the ion hole is essentially negative, giving rise to bipolar slow electric fields. The present investigation thus offers a new Langmuir wave contraction scenario that has not been rigorously explored in plasma physics.
Original languageEnglish
Pages (from-to)647-652
Number of pages6
JournalJETP Letters
Volume77
Issue number12
DOIs
Publication statusPublished - 1 Jun 2003

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plasmons
trapping
ions
differential equations
electric fields
ion distribution
plasma physics
wave interaction
plasma waves
electron plasma
contraction
distribution functions
kinetics
interactions

Keywords

  • plasma
  • ion holes
  • Langmuir wave electric field
  • ion hole potential

Cite this

Shukla, P. K. ; Eliasson, B. / Trapping of plasmons in ion holes. In: JETP Letters. 2003 ; Vol. 77, No. 12. pp. 647-652.
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Trapping of plasmons in ion holes. / Shukla, P. K.; Eliasson, B.

In: JETP Letters, Vol. 77, No. 12, 01.06.2003, p. 647-652.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Trapping of plasmons in ion holes

AU - Shukla, P. K.

AU - Eliasson, B.

N1 - From Pis’ma v Zhurnal Éksperimental’nol i Teoreticheskol Fiziki, Vol. 77, No. 12, 2003, pp. 778–783.

PY - 2003/6/1

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N2 - We present analytical and numerical studies of a new electron plasma wave interaction mechanism, which reveals trapping of Langmuir waves in ion holes associated with nonisothermal ion distribution functions. This Langmuir ion hole interaction is a unique kinetic phenomenon governed by two second nonlinear differential equations in which the Langmuir wave electric field and ion hole potential are coupled in a complex fashion. Numerical analyses of our nonlinearly coupled differential equations exhibit trapping of localized Langmuir wave envelops in the ion hole, which is either standing or moving with sub-or super ion thermal speed. The resulting ambipolar potential of the ion hole is essentially negative, giving rise to bipolar slow electric fields. The present investigation thus offers a new Langmuir wave contraction scenario that has not been rigorously explored in plasma physics.

AB - We present analytical and numerical studies of a new electron plasma wave interaction mechanism, which reveals trapping of Langmuir waves in ion holes associated with nonisothermal ion distribution functions. This Langmuir ion hole interaction is a unique kinetic phenomenon governed by two second nonlinear differential equations in which the Langmuir wave electric field and ion hole potential are coupled in a complex fashion. Numerical analyses of our nonlinearly coupled differential equations exhibit trapping of localized Langmuir wave envelops in the ion hole, which is either standing or moving with sub-or super ion thermal speed. The resulting ambipolar potential of the ion hole is essentially negative, giving rise to bipolar slow electric fields. The present investigation thus offers a new Langmuir wave contraction scenario that has not been rigorously explored in plasma physics.

KW - plasma

KW - ion holes

KW - Langmuir wave electric field

KW - ion hole potential

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