Limits of validity of photon-in-cell simulation techniques

A.J.W. Reitsma, D.A. Jaroszynski

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A comparison is made between two reduced models for studying laser propagation in underdense plasma; namely, photon kinetic theory and the slowly varying envelope approximation. Photon kinetic theory is a wave-kinetic description of the electromagnetic field where the motion of quasiparticles in photon coordinate-wave number phase space is described by the ray-tracing equations. Numerically, the photon kinetic theory is implemented with standard particle-in-cell techniques, which results in a so-called photon-in-cell code. For all the examples presented in this paper, the slowly varying envelope approximation is accurate and therefore discrepancies indicate the failure of photon kinetic approximation for these cases. Possible remedies for this failure are discussed at the end of the paper. (ABstract from: http://pop.aip.org/phpaen/v15/i2)
LanguageEnglish
JournalPhysics of Plasmas
Volume15
Issue number2
DOIs
Publication statusPublished - Feb 2008

Fingerprint

photons
kinetic theory
cells
simulation
particle in cell technique
envelopes
approximation
kinetics
ray tracing
electromagnetic fields
propagation
lasers

Keywords

  • limits
  • validity
  • photon-in-cell simulation techniques
  • laser propagation
  • underdense plasma
  • photon kinetic theory
  • envelope approximation

Cite this

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Limits of validity of photon-in-cell simulation techniques. / Reitsma, A.J.W.; Jaroszynski, D.A.

In: Physics of Plasmas, Vol. 15, No. 2, 02.2008.

Research output: Contribution to journalArticle

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AB - A comparison is made between two reduced models for studying laser propagation in underdense plasma; namely, photon kinetic theory and the slowly varying envelope approximation. Photon kinetic theory is a wave-kinetic description of the electromagnetic field where the motion of quasiparticles in photon coordinate-wave number phase space is described by the ray-tracing equations. Numerically, the photon kinetic theory is implemented with standard particle-in-cell techniques, which results in a so-called photon-in-cell code. For all the examples presented in this paper, the slowly varying envelope approximation is accurate and therefore discrepancies indicate the failure of photon kinetic approximation for these cases. Possible remedies for this failure are discussed at the end of the paper. (ABstract from: http://pop.aip.org/phpaen/v15/i2)

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