Active manipulation of the spatial energy distribution of laser-accelerated proton beams

Carroll, D.C. and McKenna, P. and Lundh, O. and Lindau, F. and Wahlstrom, C.-G. and Bandyopadhyay, S. and Pepler, D. and Neely, D. (2007) Active manipulation of the spatial energy distribution of laser-accelerated proton beams. Physical Review E, 76 (6). 065401. ISSN 2470-0053 (https://doi.org/10.1103/PhysRevE.76.065401)

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Abstract

The spatial energy distributions of beams of protons accelerated by ultrahigh intensity (> 10(19) W/cm(2)) picosecond laser pulse interactions with thin foil targets are investigated. Using separate, low intensity (< 10(13) W/cm(2)) nanosecond laser pulses, focused onto the front surface of the target foil prior to the arrival of the high intensity pulse, it is demonstrated that the proton beam profile can be actively manipulated. In particular, results obtained with an annular intensity distribution at the focus of the low intensity beam are presented, showing smooth proton beams with a sharp circular boundary at all energies, which represents a significant improvement in the beam quality compared to irradiation with the picosecond beam alone.

ORCID iDs

Carroll, D.C., McKenna, P. ORCID logoORCID: https://orcid.org/0000-0001-8061-7091, Lundh, O., Lindau, F., Wahlstrom, C.-G., Bandyopadhyay, S., Pepler, D. and Neely, D.;
  • Item type:Article
    ID code:31307
    Dates:
    Date
    Event
    December 2007
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 Jul 2011 08:56
    Last modified:11 Nov 2024 09:45
    URI:https://strathprints.strath.ac.uk/id/eprint/31307
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