High-energy polarized electron beams from the ionization of isolated spin polarized hydrogen atoms
arxiv(2024)
摘要
We propose a laser-based method for the preparation of high-energy,
highly-polarized electrons, from the ionization of isolated spin-polarized
hydrogen (SPH) atoms. The SPH atoms are prepared from the photodissociation of
HBr, using two consecutive shaped UV pulses of ps duration. By appropriately
timing and focusing the pulses, we can spatially separate the highly polarized
SPH from other unwanted photoproducts, which then act as the target for the
ion-acceleration lasers. The density of SPH can surpass ≈10^18
cm^-3, allowing the production of GeV electrons with polarization larger
than 90
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