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首页> 外文期刊>Plasma and Fusion Research >Transient Charge Flows Induced by the Evolution of Laser Ablation Plasma
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Transient Charge Flows Induced by the Evolution of Laser Ablation Plasma

机译：激光烧蚀等离子体的演化引起的瞬态电荷流

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摘要

Charge flows were induced from a laser ablation plasma to a grounded target. The current signals, which were directly measured using a current monitor, developed from negative to positive depending on the dynamically evolving plasma. The results showed that, initially the current was induced by an electron flow from the plasma plume to the surrounding wall and, after a transient phase, the current was replaced by an ion flow to the wall. The results suggest that there was a breaking of the quasi-neutral state of the ablation plasma and that an ambipolar electric field (double layer; DL) was generated during the ablation process.
机译：电荷从激光烧蚀等离子体流向接地目标。使用电流监视器直接测量的电流信号根据动态演变的等离子体从负变为正。结果表明，最初，电流是由从等离子体羽流到周围壁的电子流感应产生的，在过渡阶段之后，电流被流向壁的离子流所代替。结果表明，烧蚀等离子体的准中性状态破裂，并且在烧蚀过程中产生了双极电场（双层; DL）。

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