Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.135001
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Funding
- NSFC [10855001, 10935002]
- Munich Centre for Advanced Photonics (MAP)
- Association EURATOM-MaxPlanck-Institute for Plasma Physics
- National Nature Science Foundation of China [10674175, 60621063]
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We report on a self-organizing, quasistable regime of laser proton acceleration, producing 1 GeV nanocoulomb proton bunches from laser foil interaction at an intensity of 7 X 10(21) W/cm(2). The results are obtained from 2D particle-in-cell simulations, using a circular polarized laser pulse with Gaussian transverse profile, normally incident on a planar, 500 nm thick hydrogen foil. While foil plasma driven in the wings of the driving pulse is dispersed, a stable central clump with 1-2 lambda diameter is forming on the axis. The stabilization is related to laser light having passed the transparent parts of the foil in the wing region and enfolding the central clump that is still opaque. Varying laser parameters, it is shown that the results are stable within certain margins and can be obtained both for protons and heavier ions such as He2+.
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