Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radiation Pressure Acceleration of Ion Beams Driven by Circularly
  Polarized Laser Pulses   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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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys