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arXiv · 2505.05337

Laguerre-Gaussian pulses for spin-polarized ion beam acceleration

Lars Reichwein·Tong-Pu Yu·Alexander Pukhov·Markus Büscher
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Abstract

Polarized particle sources have a plethora of applications, ranging from deep-inelastic scattering to nuclear fusion. One crucial challenge in laser-plasma interaction is maintaining the initial polarization of the target. Here, we propose the acceleration of spin-polarized Helium-3 from near-critical density targets using high-intensity Laguerre-Gaussian laser pulses. Three-dimensional particle-in-cell simulations show that Magnetic Vortex Acceleration with these modes yields higher polarization on the 90%-level compared to conventional Gaussian laser pulses, while also providing low-divergence beams.

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Lars Reichwein, Tong-Pu Yu, Alexander Pukhov, Markus Büscher. 2025-05-08. Laguerre-Gaussian pulses for spin-polarized ion beam acceleration. https://doi.org/10.1017/hpl.2025.10098

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