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SYLP: Relativistische Laser-Plasma-Physik

SYLP 1: Relativistische Laser-Plasma-Physik 1

SYLP 1.5: Talk

Saturday, March 5, 2005, 11:40–12:00, HU Senatssaal

Laser Wakefield und monoenergetic Elektrons: the dawn of compact accelerators — •Alexander Pukhov, Sergei Gordienko, and Sergei Kiselev — HHUD, Institut fuer Theoretische Physik 1, Duesseldorf

Plasma-based accelerators have been proposed for the next generation of compact accelerators because of the huge electric fields they can support. However, it has been difficult to use them efficiently for applications because they produce poor quality particle beams with large energy spreads. We demonstrate a dramatic enhancement in the quality of electron beams produced in laser-plasma interaction: an ultrashort laser pulse drives a plasma bubble which traps and accelerates plasma electrons to a single energy. This bubble is scalable to high electron energies. The first experiment [J.Faure et al., Nature 2004) demonstrates an extremely collimated and quasi-monoenergetic electron beam with a high charge of 0.5 nanocoulomb at energy 170 +/- 20 MeV. The experiment is compared with 3D PIC simulations.