A study of unipolar arcs in a low‐pressure mercury discharge
作者:
C. T. Johnson,
A. Lee,
G. S. Smeltzer,
期刊:
Journal of Applied Physics
(AIP Available online 1981)
卷期:
Volume 52,
issue 11
页码: 6543-6549
ISSN:0021-8979
年代: 1981
DOI:10.1063/1.328605
出版商: AIP
数据来源: AIP
摘要:
An experimental study of unipolar arcs was conducted in a low‐pressure mercury rf‐generated plasma. The results were found to be consistent with the concept of a sheath mechanism for driving the unipolar arcs. Floating double‐probe measurements yielded electron temperatures of ∼2 eV and electron‐number densities of ∼1×1011cm−3. The variation of the unipolar arc current with (1) the electron temperature and density and (2) the metal surface area exposed to the plasma verified the predicted dependence of the arc current on the plasma parameters and the metal surface area. Finally, alternative mechanisms for sustaining the observed arcs by high‐frequency rectification were ruled out on the basis of the recorded current waveforms of the unipolar arcs.
点击下载:
PDF
(482KB)
返 回