Shock-Front Injector For High-Quality Laser-Plasma Acceleration
PHYSICAL REVIEW LETTERS(2013)
摘要
We report the generation of stable and tunable electron bunches with very low absolute energy spread (Delta E approximate to 5 MeV) accelerated in laser wakefields via injection and trapping at a sharp downward density jump produced by a shock front in a supersonic gas flow. The peak of the highly stable and reproducible electron energy spectrum was tuned over more than 1 order of magnitude, containing a charge of 1-100 pC and a charge per energy interval of more than 10 pC/MeV. Laser-plasma electron acceleration with Ti:sapphire lasers using this novel injection mechanism provides high-quality electron bunches tailored for applications.
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关键词
Laser-Plasma Accelerators,High-Energy Density Plasmas,Wakefield Acceleration,Ultrafast Laser Pulses,Ion Acceleration
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