Validity of the similarity law for the glow discharges in non-plane-parallel gaps

Validity of the similarity law for the glow discharges in non-plane-parallel gaps
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非平面平行间隙中辉光放电相似定律的有效性

DOI:
10.1088/0963-0252/23/6/065035
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发表时间:
2014-10
影响因子:
3.8
通讯作者:
Wang Xinxin
Wang Xinxin
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Fu Yangyang;Luo Haiyun;Zou Xiaobing;Wang Xinxin

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基于二维流体模型,对几何形状与国际热核聚变实验堆(ITER)辉光放电清洗相似的间隙中的辉光放电进行了数值模拟,其中间隙A的线性尺寸是间隙B的两倍,间隙A的压力是间隙B的一半。在1000 V的外加电压下,比较了这两个间隙中相应点pz的物理参数。发现这两个间隙的电势U(pz)、约化场E(pz)/p和电子温度Te(pz)的值相等,但间隙B的电子密度ne(pz)和离子密度ni(pz)是间隙A的4倍。所有这些参数比与相似定律定义的相同,这证实了相似定律对于非平面平行间隙中的辉光放电是有效的。
The glow discharges in the gaps geometrically similar to that used in glow discharge cleaning of the International Thermonuclear Experimental Reactor (ITER) were numerically simulated based on a two-dimensional fluid model in which the linear dimensions of gap A are two times that of gap B and the pressure of gap A is half that of gap B. Under an applied voltage of 1000 V, the physical parameters at the corresponding point pz in these two gaps were compared. It was found that the electric potential U(pz), the reduced field E(pz)/p and the electron temperature Te(pz) are equal in values for these two gaps, but the electron density ne(pz) and ion density ni(pz) for gap B are four times that of gap A. All these parameter ratios are the same as that defined by similarity law, which confirmed that the similarity law is valid for the glow discharges in non-plane-parallel gaps.
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