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arXiv 1502.06790physics.plasm-ph
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相对论电子直接Laser加速的新进展

Novel Aspects of Direct Laser Acceleration of Relativistic Electrons

A. V. Arefiev, A. P. L. Robinson, V. N. Khudik

摘要:

我们研究了几个因素对激光脉冲加速电子的影响以及由此产生的电子能量增益。具体而言,我们考虑的作用:1)静态纵向电场; 2)静态横向电场; 3)电子注入到激光脉冲;和4)静态纵向磁场。结果表明,所有这些因素导致,在一定条件下,从激光脉冲相当大的电子能量增益。与尾流场加速等其他机制相比,这种情况下的静态电场并不直接将大量能量传递给电子,而是减少了电子和激光束之间的纵向失相,从而使电子从激光束中获得额外的能量。这里讨论的机制是相关的实验与下致密气体射流,以及涉及扩展的预等离子体的固体密度目标的实验。

英文摘要:

We examine the impact of several factors on electron acceleration by a laser pulse and the resulting electron energy gain. Specifically, we consider the role played by: 1) static longitudinal electric field; 2) static transverse electric field; 3) electron injection into the laser pulse; and 4) static longitudinal magnetic field. It is shown that all of these factors lead, under certain conditions, to a considerable electron energy gain from the laser pulse. In contrast with other mechanisms such as wakefield acceleration, the static electric fields in this case do not directly transfer substantial energy to the electron. Instead, they reduce the longitudinal dephasing between the electron and the laser beam, which then allows the electron to gain extra energy from the beam. The mechanisms discussed here are relevant to experiments with under-dense gas jets, as well as to experiments with solid-density targets involving an extended pre-plasma.

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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