Effects of laser prepulse on proton generation

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.

• Författare: D. Batani; R. Jafer; R. Redaelli; R. Dezulian; Olle Lundh; Filip Lindau; Anders Persson; Karoly Osvay; Claes-Göran Wahlström; D. C. Carroll; P. McKenna
• Avdelning/ar: Atomfysik
• Publiceringsår: 2010
• Språk: Engelska
• Sidor: 794-802
• Publikation/Tidskrift/Serie: Radiation Effects and Defects in Solids
• Volym: 165
• Issue: 6-10
• Länkar: http://dx.doi.org/10.1080/10420151003732064
• Dokumenttyp: Konferensbidrag
• Förlag: Taylor & Francis
• Ämne: Atom and Molecular Physics and Optics
• Nyckelord: 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/Övrigt: ISSN: 1042-0150