Laser wakefield acceleration with mid-IR laser pulses
| Autor: | Fatholah Salehi, Andrius Baltuška, Audrius Pugžlys, Robert Schwartz, Valentina Shumakova, Daniel Woodbury, Anastasia Korolov, Bo Miao, Claudia Gollner, Linus Feder, Howard Milchberg |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Jet (fluid) business.industry FOS: Physical sciences Laser Plasma acceleration 01 natural sciences Physics - Plasma Physics Atomic and Molecular Physics and Optics Spectral line 010305 fluids & plasmas law.invention Plasma Physics (physics.plasm-ph) Acceleration Optics law 0103 physical sciences High harmonic generation Physics::Accelerator Physics 010306 general physics business Scaling Beam (structure) Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.1801.05241 |
| Popis: | We report on, to the best of our knowledge, the first results of laser plasma wakefield acceleration driven by ultrashort mid-infrared (IR) laser pulses (λ=3.9 μm, 100 fs, 0.25 TW), which enable near- and above-critical density interactions with moderate-density gas jets. Relativistic electron acceleration up to ∼12 MeV occurs when the jet width exceeds the threshold scale length for relativistic self-focusing. We present scaling trends in the accelerated beam profiles, charge, and spectra, which are supported by particle-in-cell simulations and time-resolved images of the interaction. For similarly scaled conditions, we observe significant increases in the accelerated charge, compared to previous experiments with near-infrared (λ=800 nm) pulses. |
| Databáze: | OpenAIRE |
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