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- W4376166992 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 generate ion beams with quasi-monoenergetic peak and low divergence in the experiments with the current ultra-high intensity laser and thin target technologies. Here we propose a scheme that a Laguerre Gaussian laser irradiates a near-critical-density (NCD) plasma to generate a quasi-monoenergetic and low-divergence proton beam. The Laguerre Gaussian laser pulse in NCD plasma excites a moving longitudinal electrostatic field with a large amplitude, and it maintains the inward bowl-shape for dozens of laser durations. This special distribution of the longitudinal electrostatic field can accelerate and converge the protons simultaneously. Our particle-in-cell (PIC) simulation shows that the efficient proton acceleration can be realized with the Laguerre Gaussian laser intensity ranging from 3.9-10^21 Wcm^-2 -1.6-10^22 Wcm^-2 available in the near future, e.g., a quasi-monoenergetic proton beam with peak energy ~115 MeV and divergence angles less than 50 can be generated by a 5.3-10^21 Wcm^-2 pulse. This work could provide a reference for the high-quality ion beam generation with PW-class laser systems available recently." @default.
- W4376166992 created "2023-05-12" @default.
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- W4376166992 date "2023-05-09" @default.
- W4376166992 modified "2023-10-16" @default.
- W4376166992 title "Efficient ion acceleration driven by a Laguerre Gaussian laser in near-critical-density plasma" @default.
- W4376166992 doi "https://doi.org/10.48550/arxiv.2305.05864" @default.
- W4376166992 hasPublicationYear "2023" @default.
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