Stable GeV Ion Beam Acceleration from Thin Foils by Circularly Polarized Laser Pulses

Bin Qiao, Matthew Zepf, Marco Borghesi, Michael Geissler

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Abstract

A stable relativistic ion acceleration regime for thin foils irradiated by circularly polarized laser pulses is suggested. In this regime, the "light-sail" stage of radiation pressure acceleration for ions is smoothly connected with the initial relativistic "hole-boring" stage, and a defined relationship between laser intensity I(0), foil density n(0), and thickness l(0) should be satisfied. For foils with a wide range of n(0), the required I(0) and l(0) for the regime are theoretically estimated and verified with the particle-in-cell code ILLUMINATION. It is shown for the first time by 2D simulations that high-density monoenergetic ion beams with energy above GeV/u and divergence of 10 degrees are produced by circularly polarized lasers at intensities of 10(22) W/cm(2), which are within reach of current laser systems.
Original languageEnglish
Article number145002
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number14
Early online date08 Apr 2009
DOIs
Publication statusPublished - 10 Apr 2009

Bibliographical note

The work here was supported by EPSRC (Grants
No. EP/E035728/1 and No. EP/D/06337X/1). M. Z. acknowledges support from the Royal Society. B. Q. acknowledges useful discussion with X. T. He and C. T.
Zhou at Center for Applied Physics and Technology,
Peking University

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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