Radiation Pressure Acceleration of Ion Beams Driven by Circularly Polarized Laser Pulses

Details Radiation Pressure Acceleration of Ion Beams Driven by Circularly Polarized Laser Pulses Radiation Pressure Acceleration of Ion Beams Driven by Circularly Polarized Laser Pulses

2009-08-27

arxiv.org/abs/0908.4057v1

Physics

Plasma Physics

Scientific paper

We present experimental studies on ion acceleration from ultra-thin diamond-like carbon (DLC) foils irradiated by ultra-high contrast laser pulses of energy 0.7 J focussed to peak intensities of 5*10^{19} W/cm^2. A reduction in electron heating is observed when the laser polarization is changed from linear to circular, leading to a pronounced peak in the fully ionized carbon spectrum at the optimum foil thickness of 5.3 nm. Two-dimensional particle-in-cell (PIC) simulations reveal, that those C^{6+} ions are for the first time dominantly accelerated in a phase-stable way by the laser radiation pressure.

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