Beam instabilities in laser-plasma interaction: relevance to preferential ion heating

J.T. Mendonça, P. Norreys, R. Bingham, J.R. Davies

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We propose a new mechanism for anomalous ion heating in ultraintense laser plasmas. This mechanism is based on the excitation of an electron two-stream instability that is driven by the fast electron beam that resonantly decays into ion-acoustic waves. These low frequency waves are then strongly damped by the ion collisions in the dense plasma. The model gives a simple explanation for the preferential heating of the bulk ion population observed in recent laser experiments in the petawatt regime. In particular, this work provides an explanation for the different energy loss in the Au and CD plasmas, in cone-guided fast ignition experiments.
LanguageEnglish
Article number245002
Number of pages4
JournalPhysical Review Letters
Volume94
Issue number24
DOIs
Publication statusPublished - Jun 2005

Fingerprint

laser plasma interactions
heating
ions
ion acoustic waves
dense plasmas
laser plasmas
ignition
cones
energy dissipation
electron beams
low frequencies
collisions
decay
excitation
lasers
electrons

Keywords

  • laser plasmas
  • heating
  • electron two-stream instability
  • ions
  • waves
  • plasmas

Cite this

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abstract = "We propose a new mechanism for anomalous ion heating in ultraintense laser plasmas. This mechanism is based on the excitation of an electron two-stream instability that is driven by the fast electron beam that resonantly decays into ion-acoustic waves. These low frequency waves are then strongly damped by the ion collisions in the dense plasma. The model gives a simple explanation for the preferential heating of the bulk ion population observed in recent laser experiments in the petawatt regime. In particular, this work provides an explanation for the different energy loss in the Au and CD plasmas, in cone-guided fast ignition experiments.",
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Beam instabilities in laser-plasma interaction : relevance to preferential ion heating. / Mendonça, J.T.; Norreys, P.; Bingham, R.; Davies, J.R.

In: Physical Review Letters, Vol. 94, No. 24, 245002, 06.2005.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Beam instabilities in laser-plasma interaction

T2 - Physical Review Letters

AU - Mendonça, J.T.

AU - Norreys, P.

AU - Bingham, R.

AU - Davies, J.R.

PY - 2005/6

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AB - We propose a new mechanism for anomalous ion heating in ultraintense laser plasmas. This mechanism is based on the excitation of an electron two-stream instability that is driven by the fast electron beam that resonantly decays into ion-acoustic waves. These low frequency waves are then strongly damped by the ion collisions in the dense plasma. The model gives a simple explanation for the preferential heating of the bulk ion population observed in recent laser experiments in the petawatt regime. In particular, this work provides an explanation for the different energy loss in the Au and CD plasmas, in cone-guided fast ignition experiments.

KW - laser plasmas

KW - heating

KW - electron two-stream instability

KW - ions

KW - waves

KW - plasmas

U2 - 10.1103/PhysRevLett.94.245002

DO - 10.1103/PhysRevLett.94.245002

M3 - Article

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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M1 - 245002

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