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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >MHD stability analysis of a slow capillary discharge
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MHD stability analysis of a slow capillary discharge

机译:缓慢毛细管放电的MHD稳定性分析

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We investigate the magnetohydrodynamic (MHD) stability of a slow capillary discharge channel constructed for guiding laser pulses, including discharge-induced azimuthal and externally applied axial magnetic fields. Numerical results show that the slow discharge capillary channel is not free from MHD instabilities. The e-folding growth time of the most unstable mode (21 ns) is less than the duration of the 'steady state' discharge (about 100 ns), but much longer than the laser travel time through the channel (170 ps). Hence, although MHD instabilities will form no threat to laser wakefield accelerator applications, they can influence the detailed variation of channel density profiles within the discharge lifetime. [References: 26]
机译:我们研究了慢速毛细管放电通道的磁流体动力学(MHD)稳定性,该通道用于引导激光脉冲,包括放电引起的方位角和外部施加的轴向磁场。数值结果表明,缓慢排放的毛细管通道并非没有MHD不稳定性。最不稳定模式的电子折叠生长时间(21 ns)小于“稳态”放电的持续时间(约100 ns),但比激光穿过通道的传播时间(170 ps)长得多。因此,尽管MHD不稳定性不会对激光尾场加速器的应用造成威胁,但它们会影响放电寿命内通道密度分布的详细变化。 [参考:26]

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