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Multiparameter-controlled laser ionization within a plasma wave for wakefield acceleration
Journal of Physics B: Atomic, Molecular and Optical Physics ( IF 1.6 ) Pub Date : 2022-02-11 , DOI: 10.1088/1361-6455/ac489b
M Stumpf 1 , M Melchger 1 , S Montag 1 , G Pretzler 1
Affiliation  

We present an optical setup for well-defined ionization inside a plasma such that precisely controlled spots of high electron density can be generated. We propose to use the setup for Trojan Horse Injection (or Plasma Photocathode Emission) where a collinear laser beam is needed to release electrons inside a plasma wakefield. The reflection-based setup allows a suitable manipulation of the laser near field without disturbing the spectral phase of the laser pulses. A required ionization state and volume can be reached by tuning the beam size, pulse duration and pulse energy. The ionization simulations enable a prediction of the ionization spot and are in good agreement with dedicated experiments which measured the number of electrons created during the laser–gas interaction.

中文翻译:

用于尾场加速的等离子波内的多参数控制激光电离

我们提出了一种用于等离子体内部明确电离的光学装置,以便可以生成精确控制的高电子密度点。我们建议使用特洛伊木马注入(或等离子光电阴极发射)设置,其中需要共线激光束来释放等离子尾场内的电子。基于反射的设置允许在不干扰激光脉冲的光谱相位的情况下适当地操纵激光近场。可以通过调整光束大小、脉冲持续时间和脉冲能量来达到所需的电离状态和体积。电离模拟能够预测电离点,并且与测量激光-气体相互作用过程中产生的电子数量的专用实验非常一致。
更新日期:2022-02-11
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