Generation of Ultraintense Proton Beams Driven by a Short-Pulse Multi-TW Laser

J. Badziak, S. Jabłoński, P. Parys, M. Rosiński, J. Wołowski, A. Szydłowski, P. Antici, J. Fuchs, A. Mancic

Abstract


The results of experimental studies of high-intensity proton beam generation at the interaction of a 350 fs laser pulse of 1.06um or 0.53um wavelength and intensity up to 2×1019Wcm-2 with a thin (0.6-3um) solid target are reported. It is shown that collimated MeV proton beams of intensity ~ 1018Wcm-2 and current density ~ 1012Acm-2 at the source can be produced when the laser-target interaction conditions approach the skin-layer ponderomotive acceleration requirements and the laser intensity-wavelength product is above 109Wcm-2um2. The effect of laser intensity, the target structure and the laser wavelength on the proton beam intensity and the laser-protons energy conversion efficiency are demonstrated.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
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ISSN: 2080-2242