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arXiv · 2001.11398

Spin polarized proton beam generation from gas-jet targets by intense laser pulses

Luling Jin·Meng Wen·Xiaomei Zhang·Anna Hützen·Johannes Thomas·Markus Büscher·Baifei Shen
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Abstract

A method of generating spin polarized proton beams from a gas jet by using a multi-petawatt laser is put forward. With currently available techniques of producing pre-polarized monatomic gases from photodissociated hydrogen halide molecules and petawatt lasers, proton beams with energy ~ 50 MeV and ~ 80 % polarization are proved to be obtained. Two-stage acceleration and spin dynamics of protons are investigated theoretically and by means of fully self-consistent three dimensional particle-in-cell simulations. Our results predict the dependence of the beam polarization on the intensity of the driving laser pulse. Generation of bright energetic polarized proton beams would open a domain of polarization studies with laser driven accelerators, and have potential application to enable effective detection in explorations of quantum chromodynamics.

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Luling Jin, Meng Wen, Xiaomei Zhang, Anna Hützen, Johannes Thomas, Markus Büscher, Baifei Shen. 2020-01-30. Spin polarized proton beam generation from gas-jet targets by intense laser pulses. https://doi.org/10.1103/physreve.102.011201

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