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The generation of mono-energetic electron beams from ultrashort pulse laser–plasma interactions

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • Stuart P. D. Mangles
  • Karl Krushelnick
  • Zulfikar Najmudin
  • M. S. Wei
  • B. Walton
  • Abhijit Gopal
  • Aboobaker E. Dangor
  • S. Fritzler
  • C. D. Murphy
  • Alexander George Roy Thomas
  • Warren B. Mori
  • J. G. Gallacher
  • Dino Jaroszynski
  • Peter A. Norreys
  • R. Viskup
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<mark>Journal publication date</mark>15/03/2006
<mark>Journal</mark>Philosophical Transactions of the Royal Society of London A
Volume364
Number of pages15
Pages (from-to)663-677
Publication StatusPublished
Early online date24/01/06
<mark>Original language</mark>English

Abstract

The physics of the interaction of high-intensity laser pulses with underdense plasma depends not only on the interaction intensity but also on the laser pulse length. We show experimentally that as intensities are increased beyond 1020 W cm−2 the peak electron acceleration increases beyond that which can be produced from single stage plasma wave acceleration and it is likely that direct laser acceleration mechanisms begin to play an important role. If, alternatively, the pulse length is reduced such that it approaches the plasma period of a relativistic electron plasma wave, high-power interactions at much lower intensity enable the generation of quasi-mono-energetic beams of relativistic electrons.