Chin. Phys. Lett.  2010, Vol. 27 Issue (6): 065201    DOI: 10.1088/0256-307X/27/6/065201
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
Transition of Discharge Mode of a Local Hollow Cathode Discharge

LI Shang, OUYANG Ji-Ting, HE Feng

School of Science, Beijing Institute of Technology, Beijing 100081
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LI Shang, OUYANG Ji-Ting, HE Feng 2010 Chin. Phys. Lett. 27 065201
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Abstract

The discharge characteristics of hollow cathode discharge in argon in a cylindrical cavity are investigated experimentally. The voltage-current (V-I) characteristics and the light emission are measured. It is found that the discharge plasma is localized inside the hollow cavity, with an extensive Faraday dark space between the cathode and the anode. The discharge develops from predischarge to abnormal glow discharge, the hollow cathode effect (HCE) and a hybrid mode as the discharge current increases. The onset of the HCE is found for the first time by the transition from abnormal glow discharge together with a significant decrease in the slope of the V-I curve which shows a positive differential resistivity. The voltage increases proportionally with the current when the HCE is reached.

Keywords: 52.80.Hc      51.50.+v     
Received: 25 January 2010      Published: 25 May 2010
PACS:  52.80.Hc (Glow; corona)  
  51.50.+v (Electrical properties)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/6/065201       OR      https://cpl.iphy.ac.cn/Y2010/V27/I6/065201
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LI Shang
OUYANG Ji-Ting
HE Feng
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