Reduction of pulsed particle load with dynamic pressure induced by transient recycled neutral flux
Reduction of pulsed particle load with dynamic pressure induced by transient recycled neutral flux
复制标题
通过瞬态再循环中性通量引起的动态压力减少脉冲颗粒负载
DOI：
10.1088/1361-6587/ac8acb
复制
发表时间：
2022
影响因子：
2.2
通讯作者：
Masuda Shota
中科院分区：
文献类型：
--
作者：
Hayashi Yuki;Tanaka Hirohiko;Ohno Noriyasu;Kajita Shin;Morgan Thomas;van der Meiden Hennie;Scholten John;Vernimmen Jordy;Natsume Hiroki;Sawada Keiji;Masuda Shota
从脉冲等离子体实验集中在中性压力的依赖性，从低到高的再循环目标的粒子负载的过渡的影响进行了研究和讨论的线性等离子体装置，Magnum-PSI。由于等离子体-中性相互作用，在高中性压力情况下，目标离子通量的时间轨迹得到缓解。另一方面，在低中性压力的情况下，目标离子通量表示部分抑制在脉冲的最后一部分。位于靶板上游200 mm处的朗缪尔探针没有表现出这种抑制。脉冲抑制可以预期从回收中性通量和脉冲等离子体在靶前的局部相互作用。比较了中性粒子与脉冲离子的电荷交换和与背景中性粒子的弹性散射的平均自由程。使用流体代码加上中性传输代码进行建模，得出的结论是，由瞬态再循环中性通量引起的动态压力导致足够的动量损失，使脉冲等离子体向靶板停滞。
From pulsed plasma experiments focusing on neutral pressure dependence, the impacts of a transition from a low to a high recycling target on the particle load were investigated and discussed in the linear plasma device, Magnum-PSI. Time traces of the target ion flux were mitigated in high neutral pressure cases because of a plasma-neutral interaction. On the other hand, in low neutral-pressure cases, the target ion flux indicated partial suppression in the last part of the pulse. The Langmuir probe, located 200 mm upstream from the target plate, did not exhibit such a suppression. Pulse suppression can be expected from the localized interaction between recycled neutral flux and pulsed plasma in front of the target. The mean-free paths of recycled neutral particles regarding the charge exchange with pulse ions and elastic scattering with background neutral particles were compared. Modeling using a fluid code coupled with a neutral transport code was performed, and it was concluded that dynamic pressure induced by the transient recycled neutral flux caused sufficient momentum loss to stagnate the pulsed plasma toward the target plate.
化学和物理中显式相关的波函数：理论与应用
影响因子：
2.2
作者：
J. Rychlewski
通讯作者：
J. Rychlewski