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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Experimental investigation of plasma sheaths in magnetic mirror and cusp configurations
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Experimental investigation of plasma sheaths in magnetic mirror and cusp configurations

机译：磁镜中等离子体护套的实验研究和尖头配置

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摘要

Sheath structures near a metal plate in a magnetized plasma were experimentally investigated in magnetic mirror and cusp configurations. Plasma parameters and the sheath potential distributions were probed by a planar and an emissive probe, respectively. The measured sheath profiles in the mirror configuration show that the sheath thickness first decreases and then increases when the magnetic strength is raised. A magnetic flux-tube model was used to explain this result. In the cusp configuration, the measured sheath thickness decreases with the increase of the coil current creating the magnetic cusp. However, when normalized by the electron Debye length, the dependence of the sheath thickness on the coil current is reversed.
机译：在磁镜和尖端配置中实验研究了磁化等离子体中的金属板附近的护套结构。 通过平面和发光探针探测等离子体参数和护套电位分布。 镜子配置中的测量的鞘型表明，护套厚度首先减小，然后在升高磁强度时增加。 磁通管模型用于解释这一结果。 在CUSP配置中，测量的鞘厚度随着线圈电流的增加而产生磁性尖端。 然而，当通过电子德义长度归一化时，鞘厚度在线圈电流上的依赖性颠倒。

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