Improving proton acceleration with circularly polarized intense laser pulse by radial confinement with heavy ions
Source: Phys. Plasmas 17, 013106 (2010); doi:10.1063/1.3302536
Published 28 January 2010
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.
©2010 American Institute of Physics
| History: | Received 9 November 2009; accepted 28 December 2009; published 28 January 2010 |
| Permalink: |
http://link.aip.org/link/?PHPAEN/17/013106/1 |
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