Berlin 2005 – wissenschaftliches Programm
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SYLP: Relativistische Laser-Plasma-Physik
SYLP 2: Relativistische Laser-Plasma-Physik 2
SYLP 2.1: Hauptvortrag
Samstag, 5. März 2005, 14:00–14:40, HU Senatssaal
Laser Acceleration of Protons — •Claes-Göran Wahlström1, Filip Lindau1, Olle Lundh1, Anders Persson1, and Paul McKenna2 — 1Department of Physics, Lund Institute of Technology, Lund, Sweden — 2Department of Physics, University of Strathclyde, Glasgow, UK
Laser acceleration of ions during the interaction of intense femtosecond lasers with thin solid target foils will be discussed. In particular, a systematic experimental study of the spatial distribution of the proton beams as function various laser parameters will be described. In this study, which is performed with the target foil irradiated under oblique angle of incidence, it is found that under certain laser and target conditions, the proton beams are directed away from the target normal. This deviation is towards the laser forward direction, with an angle that depends on the level and duration of the ASE pedestal before the main laser pulse. In addition, for a given laser pulse, this beam deviation increases with proton energy.