Ponderomotive acceleration of ions: Circular versus linear polarization

Year: 2008

Authors: Liseykina T.V., Prellino D., Cornolti F., Macchi A.

Autors Affiliation: Università di Pisa, Dipartimento di Fisica \”E. Fermi\”, I-56127 Pisa, Italy; CNR, INFM, PolyLAB, I-56127 Pisa, Italy; Russian Acad Sci, Siberian Div, Inst Computat Technol, Novosibirsk 630090, Russia; Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany

Abstract: Ponderomotive (or radiation pressure) acceleration is a route to the generation of high-energy ions in laser-solid interactions, which does not rely on the generation of fast electrons. It may be optimized by the use of circularly polarized (CP) laser pulses rather than linearly polarized (LP) ones, since for CP, fast electron generation is strongly inhibited, quenching competing mechanisms such as target normal sheath acceleration. We present a comparison of 1-D and 2-D particle-in-cell simulations for CP and LP, which shows the potential of CP pulses for ion acceleration. The comparison also enables us to discriminate \”pure\” ponderomotive effects from those due to fast electrons, aiding the understanding of basic mechanisms of ion acceleration and surface rippling.


Volume: 36 (4)      Pages from: 1866  to: 1871

More Information: This work was supported in part by the Italian Ministry for University and Research (MIUR) via the PRIN project \”Ultraintense laser-plasma interaction.\” by the Italian National Research Council-National Institute for the Physics of Matter (CNR-INFM) and the Interuniversity Consortium High Performance Systems (CINECA), Bologna, Italy. through the supercomputing initiative, and by the Joint supercomputer Center, Moscow. Russia.
KeyWords: circular polarization (CIP); ion acceleration; laser-plasma accelerators; ponderomotive force (PF); radiation pressure acceleration (RPA)
DOI: 10.1109/TPS.2008.927141

Citations: 10
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