Effects of laser prepulse on proton generation

D. Batani, R. Jafer, R. Redaelli, R. Dezulian, O. Lundh, F. Lindau, A. Persson, K. Osvay, C.-G. Wahlstrom, D. C. Carroll, P. McKenna

Research output: Contribution to journalArticle

Abstract

Prepulse is a major issue for laser generation of protons, often limiting the performances of laser sources. Here, we show the use of prepulse (1013W/cm2, ns duration) to actively manipulate the proton beam direction. Under oblique high-intensity irradiation (approximate to 1019W/cm2, ps duration) of the thin foil target, and for low prepulse intensities, the proton beam is directed away from the ounperturbedo target normal. Observations are discussed in terms of target normal sheath acceleration, in combination with a laser-controllable shock locally deforming the target surface.

Original languageEnglish
Pages (from-to)794-802
Number of pages9
JournalRadiation Effects and Defects in Solids
Volume165
Issue number6-10
DOIs
Publication statusPublished - 2010
Event4th Workshop on 'Pulsed Plasma Laser Ablation' (PPLA 2009) - Messina, Italy
Duration: 18 Jun 200920 Jun 2009

Keywords

  • high-intensity lasers
  • fast electrons
  • proton beams
  • shock waves

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