Localization of intense electromagnetic waves in plasmas

Padma Shukla, Bengt Eliasson

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present theoretical and numerical studies of the interaction between relativistically intense laser light and a two-temperature plasma consisting of one relativistically hot and one cold component of electrons. Such plasmas are frequently encountered in intense laser–plasma experiments where collisionless heating via Raman instabilities leads to a high-energetic tail in the electron distribution function. The electromagnetic waves (EMWs) are governed by the Maxwell equations, and the plasma is governed by the relativistic Vlasov and hydrodynamic equations. Owing to the interaction between the laser light and the plasma, we can have trapping of electrons in the intense wakefield of the laser pulse and the formation of relativistic electron holes (REHs) in which laser light is trapped. Such electron holes are characterized by a non-Maxwellian distribution of electrons where we have trapped and free electron populations. We present a model for the interaction between laser light and REHs, and computer simulations that show the stability and dynamics of the coupled electron hole and EMW envelopes.
LanguageEnglish
Pages1757-1769
Number of pages13
JournalPhilosophical Transactions A: Mathematical, Physical and Engineering Sciences
Volume366
Issue number1871
DOIs
Publication statusPublished - May 2008

Fingerprint

Electromagnetic Wave
Electromagnetic waves
electromagnetic radiation
Plasma
Electron
Plasmas
Electrons
lasers
Laser
Lasers
electrons
vlasov equations
Beam plasma interactions
hydrodynamic equations
plasma temperature
interactions
electron distribution
laser plasmas
Maxwell equation
free electrons

Keywords

  • maxwell equations
  • electromagnetic waves
  • vlasov equation
  • plasmas
  • localization
  • intense

Cite this

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title = "Localization of intense electromagnetic waves in plasmas",
abstract = "We present theoretical and numerical studies of the interaction between relativistically intense laser light and a two-temperature plasma consisting of one relativistically hot and one cold component of electrons. Such plasmas are frequently encountered in intense laser–plasma experiments where collisionless heating via Raman instabilities leads to a high-energetic tail in the electron distribution function. The electromagnetic waves (EMWs) are governed by the Maxwell equations, and the plasma is governed by the relativistic Vlasov and hydrodynamic equations. Owing to the interaction between the laser light and the plasma, we can have trapping of electrons in the intense wakefield of the laser pulse and the formation of relativistic electron holes (REHs) in which laser light is trapped. Such electron holes are characterized by a non-Maxwellian distribution of electrons where we have trapped and free electron populations. We present a model for the interaction between laser light and REHs, and computer simulations that show the stability and dynamics of the coupled electron hole and EMW envelopes.",
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Localization of intense electromagnetic waves in plasmas. / Shukla, Padma; Eliasson, Bengt.

In: Philosophical Transactions A: Mathematical, Physical and Engineering Sciences , Vol. 366, No. 1871, 05.2008, p. 1757-1769.

Research output: Contribution to journalArticle

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AU - Shukla, Padma

AU - Eliasson, Bengt

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AB - We present theoretical and numerical studies of the interaction between relativistically intense laser light and a two-temperature plasma consisting of one relativistically hot and one cold component of electrons. Such plasmas are frequently encountered in intense laser–plasma experiments where collisionless heating via Raman instabilities leads to a high-energetic tail in the electron distribution function. The electromagnetic waves (EMWs) are governed by the Maxwell equations, and the plasma is governed by the relativistic Vlasov and hydrodynamic equations. Owing to the interaction between the laser light and the plasma, we can have trapping of electrons in the intense wakefield of the laser pulse and the formation of relativistic electron holes (REHs) in which laser light is trapped. Such electron holes are characterized by a non-Maxwellian distribution of electrons where we have trapped and free electron populations. We present a model for the interaction between laser light and REHs, and computer simulations that show the stability and dynamics of the coupled electron hole and EMW envelopes.

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