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arXiv 1904.04893physics.plasm-ph
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利用两个连续laser脉冲增强相对论电子束准直

Enhanced relativistic-electron beam collimation using two consecutive laser pulses

S. Malko, X. Vaisseau, F. Perez, D. Batani, A. Curcio, M. Ehret, J. J. Honrubia, K. Jakubowska, A. Morace, J. J. Santos, L. Volpe

摘要:

在LULI-ELFIE装置上研究了相对论电子束(REB)准直的双激光脉冲方法。在该方案中,由第一激光驱动的REB产生的磁场用于引导第二延迟的REB。我们展示了如何电子束准直可以通过适当地调整激光器的参数进行控制。通过改变两个激光脉冲之间的焦斑尺寸比和延迟时间,我们发现电子束准直的最大值明显依赖于两个激光脉冲的焦斑尺寸比,并与磁场动力学有关。实施Cu-K α和CTR成像诊断,以评估REB的低能(< 100 keV)和高能(> MeV)分量上的准直效应。

英文摘要:

The double laser pulse approach to relativistic electron beam (REB) collimation has been investigated at the LULI-ELFIE facility. In this scheme, the magnetic field generated by the first laser-driven REB is used to guide a second delayed REB. We show how electron beam collimation can be controlled by properly adjusting laser parameters. By changing the ratio of focus size and the delay time between the two pulses we found a maximum of electron beam collimation clearly dependent on the focal spot size ratio of the two laser pulses and related to the magnetic field dynamics. Cu-K alpha and CTR imaging diagnostics were implemented to evaluate the collimation effects on the respectively low energy (< 100 keV) and high energy (> MeV) components of the REB.

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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