Features of the generation of fast particles from microstructured targets irradiated by high intensity, picosecond laser pulses

Sedov, M.V. and Faenov, A.Ya. and Andreev, A.A. and Skobelev, I.Yu. and Ryazantsev, S.N. and Pikuz, T.A. and Durey, P. and Doehl, L. and Farley, D. and Baird, C.D. and Lancaster, K.L. and Murphy, C.D. and Booth, N. and Spindloe, C. and Platonov, K.Yu. and McKenna, P. and Kodama, R. and Woolsey, N and Pikuz, S.A. (2019) Features of the generation of fast particles from microstructured targets irradiated by high intensity, picosecond laser pulses. Laser and Particle Beams, 37 (2). pp. 176-183. ISSN 0263-0346 (https://doi.org/10.1017/S0263034619000351)

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Abstract

The use of targets with surface structures for laser-driven particle acceleration has potential to significantly boost the particle and radiation energies because of enhanced laser absorption. We investigate, via experiment and particle-in-cell simulations, the impact of micron-scale surface-structured targets on the spectrum of electrons and protons accelerated by a picosecond laser pulse at relativistic intensity. Our results show that, compared with flat-surfaced targets, structures on this scale give rise to a significant enhancement in particle and radiation emission over a wide range of laser–target interaction parameters. This is due to the longer plasma scale length when using micro-structures on the target front surface. We do not observe an increase in the proton cutoff energy with our microstructured targets, and this is due to the large volume of the relief.

  • Item type:Article
    ID code:67811
    Dates:
    Date
    Event
    30 June 2019
    Published
    23 April 2019
    Published Online
    22 March 2019
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:14 May 2019 11:29
    Last modified:15 Apr 2024 00:22
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/67811
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