Dynamic Control of Laser Produced Proton Beams

Details Dynamic Control of Laser Produced Proton Beams Dynamic Control of Laser Produced Proton Beams

2007-10-22

arxiv.org/abs/0710.4014v1

Phys.Rev.Lett.100:105004,2008

Physics

Plasma Physics

9 Pages, 5 figures

Scientific paper

10.1103/PhysRevLett.100.105004

The emission characteristics of intense laser driven protons are controlled using ultra-strong (of the order of 10^9 V/m) electrostatic fields varying on a few ps timescale. The field structures are achieved by exploiting the high potential of the target (reaching multi-MV during the laser interaction). Suitably shaped targets result in a reduction in the proton beam divergence, and hence an increase in proton flux while preserving the high beam quality. The peak focusing power and its temporal variation are shown to depend on the target characteristics, allowing for the collimation of the inherently highly divergent beam and the design of achromatic electrostatic lenses.

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