Ion acceleration in overdense plasma by short laser pulse
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Published:2004-06
Issue:2
Volume:22
Page:175-181
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ISSN:0263-0346
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Container-title:Laser and Particle Beams
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language:en
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Short-container-title:Laser Part. Beams
Author:
SHOROKHOV O.,PUKHOV A.
Abstract
We consider ion acceleration at the front surface of overdense plasma
by a short laser pulse. In this configuration, the laser ponderomotive
pressure pushes the background electrons, and a double layer is
produced at the boundary of the overdense region. The ions are
accelerated by the electrostatic field of the double layer. If the
laser intensity is so large that the plasma becomes relativistically
transparent, then ion trapping in the running double layer and
acceleration to relativistic energies is possible. We study this
physics using one-dimensional particle-in-cell simulations. Ion
acceleration in one- and two-component plasmas is considered. It is
shown that the proton acceleration is more effective when they
represent only a small dope to the heavy background ions.
Publisher
Hindawi Limited
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
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