Ballistic focusing of polyenergetic protons driven by petawatt laser pulses

Tools

Kar, S. and Markey, K. and Borghesi, M. and Carroll, D. C. and McKenna, P. and Neely, D. and Quinn, M. N. and Zepf, M. (2011) Ballistic focusing of polyenergetic protons driven by petawatt laser pulses. Physical Review Letters, 106 (22). 225003. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.106.225003)

Full text not available in this repository.Request a copy

Abstract

By using a thick (250 mu m) target with 350 mu m radius of curvature, the intense proton beam driven by a petawatt laser is focused at a distance of similar to 1 mm from the target for all detectable energies up to similar to 25 MeV. The thickness of the foil facilitates beam focusing as it suppresses the dynamic evolution of the beam divergence caused by peaked electron flux distribution at the target rear side. In addition, reduction in inherent beam divergence due to the target thickness relaxes the curvature requirement for short-range focusing. Energy resolved mapping of the proton beam trajectories from mesh radiographs infers the focusing and the data agree with a simple geometrical modeling based on ballistic beam propagation.

ORCID iDs

Kar, S., Markey, K., Borghesi, M., Carroll, D. C., McKenna, P. ORCID logoORCID: https://orcid.org/0000-0001-8061-7091, Neely, D., Quinn, M. N. and Zepf, M.;
  • Item type:Article
    ID code:34017
    Dates:
    Date
    Event
    2 June 2011
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:18 Oct 2011 11:23
    Last modified:23 Nov 2024 18:42
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/34017
CORE (COnnecting REpositories)