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首页> 外文期刊>Physical Review. Accelerators and Beams >Relativistic laser hosing instability suppression and electron acceleration in a preformed plasma channel
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Relativistic laser hosing instability suppression and electron acceleration in a preformed plasma channel

机译：预制等离子体通道中的相对论激光束不稳定抑制和电子加速

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摘要

The hosing processes of a relativistic laser pulse, electron acceleration, and betatron radiation in a parabolic plasma channel are investigated in the direct laser acceleration regime. It is shown that the laser hosing instability would result in the generation of a randomly directed off-axis electron beam and radiation source with a large divergence angle. While employing a preformed parabolic plasma channel, the restoring force provided by the plasma channel would correct the perturbed laser wave front and thus suppress the hosing instability. As a result, the accelerated electron beam and the emitted photons are well guided and concentrated along the channel axis. The employment of a proper plasma density channel can stably guide the relativistically intense laser pulse and greatly improve the properties of the electron beam and radiation source. This scheme is of great interest for the generation of high quality electron beams and radiation sources.
机译：在直接激光加速机制中，研究了相对论性激光脉冲，电子加速和抛物线型等离子体通道中电子感应加速器辐射的扰动过程。结果表明，激光束的不稳定性将导致产生随机发散的偏轴电子束和发散角较大的辐射源。当使用预制的抛物线形等离子体通道时，由等离子体通道提供的恢复力将校正被扰动的激光波前，从而抑制了软管的不稳定性。结果，加速的电子束和发射的光子沿通道轴被很好地引导和集中。采用适当的等离子体密度通道可以稳定地引导相对论性强的激光脉冲，并大大改善电子束和辐射源的性能。该方案对于产生高质量电子束和辐射源非常感兴趣。

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