Laboratory plasma physics experiments using merging supersonic plasma jets
Laboratory plasma physics experiments using merging supersonic plasma jets
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使用合并超音速等离子体射流进行实验室等离子体物理实验
DOI：
10.1017/s0022377814001184
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发表时间：
2014
影响因子：
2.5
通讯作者：
F. Witherspoon
中科院分区：
文献类型：
--
作者：
Scott Hsu;Auna L. Moser;Elizabeth Merritt;C. Adams;J. Dunn;S. Brockington;A. Case;M. Gilmore;A. G. Lynn;S. Messer;F. Witherspoon
我们描述了一个实验室等离子体物理实验在洛斯阿拉莫斯国家实验室，使用两个合并的超音速等离子体射流形成和发射的脉冲功率驱动的轨道炮。射流可以使用压缩气体瓶中可用的任何原子种类或混合物形成，并且在轨道炮喷嘴出口处具有以下标称初始参数：ne = 1016 cm−3，Te = Ti = 1.4 eV，Vjet = 30-100 km/s，平均电荷$\bar{Z}$\bar {1}，音速马赫数Ms = Vjet/Cs > 10，喷流直径= 5 cm，喷流长度约20 cm。迄今为止的实验都集中在合并射流动力学和冲击的研究，形成作为一个结果的相互作用，在碰撞和无碰撞制度相对于射流间的经典离子平均自由程，并与和不施加磁场。然而，正如本文所讨论的，许多其他研究也是可能的。
We describe a laboratory plasma physics experiment at Los Alamos National Laboratory that uses two merging supersonic plasma jets formed and launched by pulsed-power-driven railguns. The jets can be formed using any atomic species or mixture available in a compressed-gas bottle and have the following nominal initial parameters at the railgun nozzle exit: ne ≈ ni ~ 1016 cm−3, Te ≈ Ti ≈ 1.4 eV, Vjet ≈ 30–100 km/s, mean charge $\bar{Z}$ ≈ 1, sonic Mach number Ms ≡ Vjet/Cs > 10, jet diameter = 5 cm, and jet length ≈20 cm. Experiments to date have focused on the study of merging-jet dynamics and the shocks that form as a result of the interaction, in both collisional and collisionless regimes with respect to the inter-jet classical ion mean free path, and with and without an applied magnetic field. However, many other studies are also possible, as discussed in this paper.