Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.185006
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Funding
- EPSRC [EP/E035728/1-LIBRA consortium, EP/E048668/1, EP/J002550/1-Career Acceleration Fellowship]
- Leverhulme Trust [ECF-2011-383]
- MIUR (Italy) via the FIRB project SULDIS
- ELI [CZ.1.05/1.1.00/483/02.0061]
- OPVK 3 [CZ.1.07/2.3.00/20.0279]
- DFG [TR18, GK1203]
- RAL-STFC
- EPSRC [EP/E035728/1, EP/I029206/1, EP/E048668/1, EP/J002550/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E035728/1, EP/I029206/1, EP/E048668/1, EP/J002550/1] Funding Source: researchfish
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The acceleration of ions from ultrathin foils has been investigated by using 250 TW, subpicosecond laser pulses, focused to intensities of up to 3 X 10(20) W cm(-2). The ion spectra show the appearance of narrow-band features for protons and carbon ions peaked at higher energies (in the 5-10 MeV/nucleon range) and with significantly higher flux than previously reported. The spectral features and their scaling with laser and target parameters provide evidence of a multispecies scenario of radiation pressure acceleration in the light sail mode, as confirmed by analytical estimates and 2D particle-in-cell simulations. The scaling indicates that monoenergetic peaks with more than 100 MeV/nucleon are obtainable with moderate improvements of the target and laser characteristics, which are within reach of ongoing technical developments.
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