Direct Measurement of a Plasma Flow Velocity Using a Mach Probe in Hanbit Magnetic Mirror Device
Direct Measurement of a Plasma Flow Velocity Using a Mach Probe in Hanbit Magnetic Mirror Device
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使用汉比特磁镜装置中的马赫探头直接测量等离子体流速
DOI：
10.13182/fst03-a11963613
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发表时间：
2003
影响因子：
0.9
通讯作者：
S. G. Lee
中科院分区：
文献类型：
--
作者：
G. Y. Kwak;Y. S. Choi;Y. Jung;K. Chung;J. Bak;S. G. Lee
使用Hanbit磁镜装置中央单元中的Much探针测量等离子体流速。 Much探针附着在快速注射探针系统上，可以沿径向扫描Hanbit设备的中央细胞室。快速注入探针系统还具有发射探针，以便同时测量等离子体电势的径向分布。因此，从马赫探头测得的流速可以直接与根据测得的等离子体电势分布计算出的 Er×B 漂移进行比较。利用马赫探针的现有理论对实验结果进行了分析。实测流速约为3 km/s，流向和大小与Er×B漂移速度大致相同。
A plasma flow velocity was measured by using a Much probe in the central cell of Hanbit magnetic mirror device. The Much probe was attached on the fast injection probe system, which can scan the central cell chamber of Hanbit device in the radial direction. The fast injection probe system also has an emissive probe so that the radial profile of the plasma potential is measured simultaneously. Therefore, the flow velocity measured from the Mach probe can be directly compared with Er×B drift calculated from the measured plasma potential profile. The experimental results are analyzed by using existing theories of the Mach probe. The measured flow velocity shows about 3 km/s, and the flow direction and magnitude is approximately the same as the Er×B drift velocity.