Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma

M. Marklund, B. Eliasson, P.K. Shukla

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A kinetic equation describing the nonlinear evolution of intense electromagnetic pulses in electron-positron (e-p) plasmas is presented. The modulational instability is analyzed for a relativistically intense partially coherent pulse, and it is found that the modulational instability is inhibited by the spectral pulse broadening. A numerical study for the one-dimensional kinetic photon equation is presented. Computer simulations reveal a Fermi-Pasta-Ulam-like recurrence phenomena for localized broadband pulses. The results should be of importance in understanding the nonlinear propagation of broadband intense electromagnetic pulses in e-p plasmas in laser-plasma systems as well as in astrophysical plasma settings.
LanguageEnglish
Number of pages16
JournalPhysics of Plasmas
Volume13
Issue number8
DOIs
Publication statusPublished - 8 Aug 2006

Fingerprint

electron-positron plasmas
electromagnetic radiation
electromagnetic pulses
broadband
propagation
pulses
laser plasmas
kinetic equations
astrophysics
computerized simulation
kinetics
photons

Keywords

  • plasma
  • astryphysical plasma
  • electromagnetic pulse
  • kinetic photon equation
  • broadband pulse
  • electromagnetic waves
  • electron-positron plasma

Cite this

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abstract = "A kinetic equation describing the nonlinear evolution of intense electromagnetic pulses in electron-positron (e-p) plasmas is presented. The modulational instability is analyzed for a relativistically intense partially coherent pulse, and it is found that the modulational instability is inhibited by the spectral pulse broadening. A numerical study for the one-dimensional kinetic photon equation is presented. Computer simulations reveal a Fermi-Pasta-Ulam-like recurrence phenomena for localized broadband pulses. The results should be of importance in understanding the nonlinear propagation of broadband intense electromagnetic pulses in e-p plasmas in laser-plasma systems as well as in astrophysical plasma settings.",
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Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma. / Marklund, M.; Eliasson, B.; Shukla, P.K.

In: Physics of Plasmas, Vol. 13, No. 8, 08.08.2006.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma

AU - Marklund, M.

AU - Eliasson, B.

AU - Shukla, P.K.

PY - 2006/8/8

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N2 - A kinetic equation describing the nonlinear evolution of intense electromagnetic pulses in electron-positron (e-p) plasmas is presented. The modulational instability is analyzed for a relativistically intense partially coherent pulse, and it is found that the modulational instability is inhibited by the spectral pulse broadening. A numerical study for the one-dimensional kinetic photon equation is presented. Computer simulations reveal a Fermi-Pasta-Ulam-like recurrence phenomena for localized broadband pulses. The results should be of importance in understanding the nonlinear propagation of broadband intense electromagnetic pulses in e-p plasmas in laser-plasma systems as well as in astrophysical plasma settings.

AB - A kinetic equation describing the nonlinear evolution of intense electromagnetic pulses in electron-positron (e-p) plasmas is presented. The modulational instability is analyzed for a relativistically intense partially coherent pulse, and it is found that the modulational instability is inhibited by the spectral pulse broadening. A numerical study for the one-dimensional kinetic photon equation is presented. Computer simulations reveal a Fermi-Pasta-Ulam-like recurrence phenomena for localized broadband pulses. The results should be of importance in understanding the nonlinear propagation of broadband intense electromagnetic pulses in e-p plasmas in laser-plasma systems as well as in astrophysical plasma settings.

KW - plasma

KW - astryphysical plasma

KW - electromagnetic pulse

KW - kinetic photon equation

KW - broadband pulse

KW - electromagnetic waves

KW - electron-positron plasma

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DO - 10.1063/1.2242941

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