Dense blocks of energetic ions driven by multi-petawatt lasers

S. M. Weng, M. Liu, Z. M. Sheng, M. Murakami, M. Chen, L. L. Yu, J. Zhang

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    Abstract

    Laser-driven ion accelerators have the advantages of compact size, high density, and short bunch duration over conventional accelerators. Nevertheless, it is still challenging to simultaneously enhance the yield and quality of laser-driven ion beams for practical applications. Here we propose a scheme to address this challenge via the use of emerging multi-petawatt lasers and a density-modulated target. The density-modulated target permits its ions to be uniformly accelerated as a dense block by laser radiation pressure. In addition, the beam quality of the accelerated ions is remarkably improved by embedding the target in a thick enough substrate, which suppresses hot electron refluxing and thus alleviates plasma heating. Particle-in-cell simulations demonstrate that almost all ions in a solid-density plasma of a few microns can be uniformly accelerated to about 25% of the speed of light by a laser pulse at an intensity around 1022 W/cm2. The resulting dense block of energetic ions may drive fusion ignition and more generally create matter with unprecedented high energy density.

    Original languageEnglish
    Article number22150
    JournalScientific reports
    Volume6
    DOIs
    Publication statusPublished - 2016 Feb 29

    ASJC Scopus subject areas

    • General

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