Shock-Front Injector for High-Quality Laser-Plasma Acceleration
Shock-Front Injector for High-Quality Laser-Plasma Acceleration
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DOI：
10.1103/physrevlett.110.185006
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发表时间：
2013-05-02
影响因子：
8.6
通讯作者：
Veisz, L.
中科院分区：
文献类型：
--
作者：
Buck, A.;Wenz, J.;Veisz, L.
我们报告的生成稳定和可调的电子束团具有非常低的绝对能量扩展（Δ E约为5 MeV）加速激光尾流场通过注入和捕获在一个急剧向下的密度跳跃产生的冲击前在超音速气流。高度稳定和可再现的电子能谱的峰被调谐超过1个数量级，包含1-100 pC的电荷和超过10 pC/MeV的每能量间隔的电荷。激光等离子体电子加速与钛：蓝宝石激光器使用这种新颖的注入机制提供了高品质的电子束团的应用。
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.