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Effects of laser prepulse on proton generation

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Summary, in English

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.

Department/s

Publishing year

2010

Language

English

Pages

794-802

Publication/Series

Radiation Effects and Defects in Solids

Volume

165

Issue

6-10

Document type

Conference paper

Publisher

Taylor & Francis

Topic

  • Atom and Molecular Physics and Optics

Keywords

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

Conference name

4th International Workshop on Pulsed Plasma Laser Ablation (PPLA)

Conference date

2009-06-18 - 2009-06-20

Conference place

Messina, Italy

Status

Published

ISBN/ISSN/Other

  • ISSN: 1042-0150