Spin-polarized electron beams are important for fundamental physics, but they could only be generated using DC electron guns. Now, a radiofrequency electron gun for polarized electrons has been realized, promising to overcome beam quality limitations.
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Kuriki, M. Radiofrequency gun for spin-polarized electron beams. Nat. Phys. (2026). https://doi.org/10.1038/s41567-025-03164-5
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DOI: https://doi.org/10.1038/s41567-025-03164-5
