Relativistic laser-plasma interactions in the quantum regime

Bengt Eliasson, Padma Shukla

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We consider nonlinear interactions between a relativistically strong laser beam and a plasma in the quantum regime. The collective behavior of electrons is modeled by a Klein-Gordon equation, which is nonlinearly coupled with the electromagnetic wave through the Maxwell and Poisson equations. This allows us to study nonlinear interactions between arbitrarily large-amplitude electromagnetic waves and a quantum plasma. We have used our system of nonlinear equations to study theoretically the parametric instabilities involving stimulated Raman scattering and modulational instabilities. A model for quasi-steady-state propagating electromagnetic wave packets is also derived, and which shows possibility of localized solitary structures in a quantum plasma. Numerical simulations demonstrate collapse and acceleration of electrons in the nonlinear stage of the modulational instability, as well as possibility of the wake-field acceleration of electrons to relativistic speeds by short laser pulses at nanometer length scales. Our study is relevant for understanding the localization of intense electromagnetic pulses in a quantum plasma with extremely high electron densities and relatively low temperature.
LanguageEnglish
Article number046407
Number of pages10
JournalPhysical Review E
Volume83
Issue number4
DOIs
Publication statusPublished - 21 Apr 2011

Fingerprint

Laser-plasma Interaction
laser plasma interactions
relativistic plasmas
Plasma
Electromagnetic Wave
Electron
Modulational Instability
electromagnetic radiation
Nonlinear Interaction
Stimulated Raman Scattering
quasi-steady states
electrons
Klein-Gordon equation
electromagnetic pulses
Collective Behavior
Klein-Gordon Equation
System of Nonlinear Equations
Wave Packet
Wake
Poisson equation

Keywords

  • quantum plasma
  • relativistic
  • laser-plasma interaction
  • relativistics

Cite this

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Relativistic laser-plasma interactions in the quantum regime. / Eliasson, Bengt; Shukla, Padma.

In: Physical Review E, Vol. 83, No. 4, 046407, 21.04.2011.

Research output: Contribution to journalArticle

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