Shumack A E, Veremiyenko V P, Schram D C, de Blank H J, Goedheer W J, van der Meiden H J, Vijvers W A J, Westerhout J, Lopes Cardozo N J, van Rooij G J
FOM-Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, Nieuwegein, The Netherlands.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Oct;78(4 Pt 2):046405. doi: 10.1103/PhysRevE.78.046405. Epub 2008 Oct 27.
A potential buildup in front of a magnetized cascaded arc hydrogen plasma source is explored via E x B rotation and plate potential measurements. Plasma rotation approaches thermal speeds with maximum velocities of 10 km/s. The diagnostic for plasma rotation is optical emission spectroscopy on the Balmer-beta line. Asymmetric spectra are observed. A detailed consideration is given on the interpretation of such spectra with a two distribution model. This consideration includes radial dependence of emission determined by Abel inversion of the lateral intensity profile. Spectrum analysis is performed considering Doppler shift, Doppler broadening, Stark broadening, and Stark splitting.
通过E×B旋转和极板电位测量，对磁化级联电弧氢等离子体源前的潜在堆积进行了探索。等离子体旋转接近热速度，最大速度为10 km/s。等离子体旋转的诊断方法是对巴尔末-β线进行光发射光谱分析。观察到不对称光谱。利用双分布模型对这类光谱的解释进行了详细探讨。这一探讨包括通过横向强度分布的阿贝尔反演确定发射的径向依赖性。考虑到多普勒频移、多普勒展宽、斯塔克展宽和斯塔克分裂进行了光谱分析。
