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arXiv 0905.2528physics.plasm-phphysics.acc-ph
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多维相对论等离子体尾场中的电子自注入

Electron Self-injection in Multidimensional Relativistic Plasma Wakefields

I. Kostyukov, E. Nerush, A. Pukhov, V. Seredov

摘要:

本文提出了一个在气泡区由短激光脉冲激发的非线性多维等离子体波或在井喷区由短电子束激发的非线性多维等离子体波中电子自注入的解析模型。在这种情况下,这是典型的电子加速在最后的实验中,激光辐射压力或电子束电荷推出背景等离子体电子形成一个等离子体腔-气泡-与一个巨大的离子电荷。等离子体电子可以被捕获在气泡中,并被等离子体尾场加速到非常高的能量。该模型预测了电子捕获的条件和捕获的截面的气泡半径和气泡速度。所得结果与三维粒子模拟结果吻合较好。

英文摘要:

We present an analytical model for electron self-injection in nonlinear, multidimensional plasma wave excited by short laser pulse in the bubble regime or by short electron beam in the blowout regime. In this regimes, which are typical for electron acceleration in the last experiments, the laser radiation pressure or the electron beam charge pushes out background plasma electrons forming a plasma cavity - bubble - with a huge ion charge. The plasma electrons can be trapped in the bubble and accelerated by the plasma wakefields up to very high energies. The model predicts the condition for electron trapping and the trapping cross section in terms of the bubble radius and the bubble velocity. The obtained results are in a good agreement with results of 3D PIC simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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