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Article Dans Une Revue Physical Review Accelerators and Beams Année : 2022

Low divergence proton beams from a laser-plasma accelerator at kHz repetition rate

Igor Andriyash
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Stefan Haessler
Jaismeen Kaur
Marie Ouillé
Alessandro Flacco

Résumé

Proton beams with up to 100 pC bunch charge, 0.48 MeV cutoff energy, and divergence as low as 3° were generated from solid targets at kHz repetition rate by a few-mJ femtosecond laser under controlled plasma conditions. The beam spatial profile was measured using a small aperture scanning time-of-flight detector. Detailed parametric studies were performed by varying the surface plasma scale length from 8 to 80 nm and the laser pulse duration from 4 fs to 1.5 ps. Numerical simulations are in good agreement with observations and, together with an in-depth theoretical analysis of the acceleration mechanism, indicate that high repetition rate femtosecond laser technology could be used to produce few-MeV proton beams for applications.
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Licence : CC BY - Paternité

Dates et versions

hal-03788792 , version 1 (14-03-2023)

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Dan Levy, Igor Andriyash, Stefan Haessler, Jaismeen Kaur, Marie Ouillé, et al.. Low divergence proton beams from a laser-plasma accelerator at kHz repetition rate. Physical Review Accelerators and Beams, 2022, 25 (9), pp.093402. ⟨10.1103/PhysRevAccelBeams.25.093402⟩. ⟨hal-03788792⟩
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