The role of collisions on mode competition between the two-stream and Weibel instabilities

K. A. Humphrey, R.M.G.M. Trines, D. C. Speirs, P. Norreys, R. Bingham

Research output: Contribution to journalArticle

Abstract

We present results from numerical simulations conducted to investigate a potential method for realizing the required fusion fuel heating in the fast ignition scheme to achieving inertial confinement fusion. A comparison will be made between collisionless and collisional particle-in-cell simulations of the relaxation of a non-thermal electron beam through the two-stream instability. The results presented demonstrate energy transfer to the plasma ion population from the laser-driven electron beam via the nonlinear wave–wave interaction associated with the two-stream instability. Evidence will also be provided for the effects of preferential damping of competing instabilities such as the Weibel mode found to be detrimental to the ion heating process.
LanguageEnglish
Pages987- 989
Number of pages3
JournalJournal of Plasma Physics
Volume79
Issue number06
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Weibel instability
collisions
electron beams
heating
inertial confinement fusion
wave interaction
ignition
ions
simulation
fusion
damping
energy transfer
cells
lasers

Keywords

  • fusion fuel
  • particle in cell collisions
  • plasma ions
  • ion heating

Cite this

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abstract = "We present results from numerical simulations conducted to investigate a potential method for realizing the required fusion fuel heating in the fast ignition scheme to achieving inertial confinement fusion. A comparison will be made between collisionless and collisional particle-in-cell simulations of the relaxation of a non-thermal electron beam through the two-stream instability. The results presented demonstrate energy transfer to the plasma ion population from the laser-driven electron beam via the nonlinear wave–wave interaction associated with the two-stream instability. Evidence will also be provided for the effects of preferential damping of competing instabilities such as the Weibel mode found to be detrimental to the ion heating process.",
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The role of collisions on mode competition between the two-stream and Weibel instabilities. / Humphrey, K. A.; Trines, R.M.G.M.; Speirs, D. C.; Norreys, P.; Bingham, R.

In: Journal of Plasma Physics, Vol. 79, No. 06, 12.2013, p. 987- 989.

Research output: Contribution to journalArticle

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AU - Speirs, D. C.

AU - Norreys, P.

AU - Bingham, R.

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KW - particle in cell collisions

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