Electron injection and trapping in a laser wakefield by field ionization to high-charge states of gases
- Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)
A scheme for electron injection into a laser wakefield is presented, which makes use of two orthogonally directed laser pulses and a gaseous medium with a moderate or high atomic number such as neon. A pump laser pulse ionizes the medium to its midcharge states to form underdense plasma and meanwhile excites a high amplitude wakefield firstly. Another ultrashort laser pulse with higher intensity is then injected transversely, which further ionizes the medium to high-charge states to produce new free electrons with certain energy. Part of these new-born electrons can be trapped and accelerated by the laser wakefield to high energies. Numerical simulations using a particle-in-cell code with field ionization included are conducted to verify the scheme.
- OSTI ID:
- 20787935
- Journal Information:
- Journal of Applied Physics, Vol. 99, Issue 5; Other Information: DOI: 10.1063/1.2179194; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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