期刊
APPLIED PHYSICS LETTERS
卷 99, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3626042
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资金
- National 973 Program of China [2011CB808100]
- NNSF of China [10974214, 60921004, 10834008]
- Chinese Ministry of Science and Technology
- CAS
Laser wakefield acceleration of electrons well beyond 1 GeV and optical guiding of ultraintense laser pulses of peak powers up to 160 TW over a 4-cm long ablative capillary discharge plasma channel were experimentally demonstrated. Electron beams, with energies up to 1.8 GeV, were generated by using the 130 TW, 55 fs driving laser pulses. A comparison of oxygen-containing acrylic resin (C:O:H = 4:2:7) capillary and no oxygen-containing polyethylene (C:O:H = 1:0:2) capillary measurements suggests that the injection of electron into the laser wakefield is assisted by the ionization of oxygen K-shell electrons. (C) 2011 American Institute of Physics. [doi:10.1063/1.3626042]
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