Improving proton acceleration with circularly polarized intense laser pulse by radial confinement with heavy ions
Improving proton acceleration with circularly polarized intense laser pulse by radial confinement with heavy ions
Huang, L. G.; Lei, A. L.; Bin, J. H.; Bai, Y.; Yu, W.; Yu, M. Y.; Cowan, T. E.
Abstract
Energetic proton acceleration from interaction of intense short circularly polarized laser pulse with a sandwich target is investigated using two-dimensional particle-in-cell simulation. The sandwich target consists of a hydrogen-plasma layer surrounded by carbon-plasma layers. It is found that the transverse electric fields generated at the plasma layer interfaces efficiently confine the longitudinally accelerated protons to within the hydrogen-plasma layer such that they are collimated and have smaller energy spread compared with a pure proton layer target. The proton energy spectrum can be controlled by adjusting the target parameters, in particular the width of the hydrogen-plasma layer and the density of the carbon-plasma layer.
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Physics of Plasmas 17(2010), 013106
DOI: 10.1063/1.3302536
ISSN: 1070-664X
Cited 4 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-13845