摘要
A systematic experimental study on injection of electrons in a gas-jet-based laser wakefield accelerator via ionization of dopant was conducted. The pump-pulse threshold energy for producing a quasi-monoenergetic electron beam was significantly reduced by doping the hydrogen gas jet with argon atoms, resulting in a much better spatial contrast of the electron beam. Furthermore, laser wakefield electron acceleration in an optically preformed plasma waveguide based on the axicon-ignitor-heater scheme was achieved. It was found that doping with argon atoms can also lower the pump-pulse threshold energy in this experimental configuration.
原文 | ???core.languages.en_GB??? |
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文章編號 | 063102 |
期刊 | Physics of Plasmas |
卷 | 18 |
發行號 | 6 |
DOIs | |
出版狀態 | 已出版 - 6月 2011 |