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K: Kurzzeitphysik

K II: HV II

K II.1: Hauptvortrag

Dienstag, 3. April 2001, 15:30–16:15, EB107

Intense Ion Beams Accelerated by Relativistic Laser Plasmas — •M. Roth1, T.E. Cowan2, J.-C. Gauthier3, M. Geissel4, M. Blažević4, T. Schlegel4, M. Allen2, P. Audebert3, J. Fuchs3, M. Hegelich5, S. Karsch5, J. Meyer-ter-Vehn5, and A. Pukhov51Gesellschaft für Schwerionenforschung, Darmstadt, Germany — 2General Atomics, P.O.Box 85608, San Diego, USA — 3LULI, Ecole Polytechnique, Palaiseau, France — 4TU-Darmstadt, Germany — 5MPQ, Garching, Germany

Intense ion beams emitted off the rear surface of solid targets irradiated with laser intensities > 1019 W/cm2 have been discovered using multiterawatt CPA-lasers. The ions were accelerated by hot electrons, that form a charge separating electrostatic sheath (Target Normal Sheath Acceleration, TNSA), and were emitted always normal to the cold, nonirradiated rear surface of the target. We present experimental results using the 100 Terawatt laser system at the Laboratoire pour L’Utilisation Lasers Intense (LULI) to investigate the acceleration mechanism and to explore future applications of the intense, short pulse ion beams. We will present results on the angle dependent energy distribution, beam emittance, total yield, target properties, and show experimental demonstration of using protons for picosecond radiography.
This work was supported by the EU - large scale facility access program.

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DPG-Physik > DPG-Verhandlungen > 2001 > Berlin