Measurement of cathode surface temperature using the method of CCD imaging in arc discharge

ADVANCED NUCLEAR INSTRUMENTATION AND DETECTION

Measurement of cathode surface temperature using the method of CCD imaging in arc discharge

LI Hui，

WANG Chuan-Bing

Nuclear Science and Techniques

Vol.17, No.4

pp.237-240

Published in print 20 Aug 2006

DOI：10.1016/S1001-8042(06)60044-4

CLC：O536,O539

33600

A two-wavelength pyrometry device using ordinary array CCD (charge coupled device) to collect the radiation data in the horizontal and vertical directions has been developed for measuring the cathode surface temperature during the arc discharge. Analyses of experimental results show that the device can make the measurement of the cathode surface temperature feasible. The cathode surface temperatures measured are lower than the melting point of tungsten (3653 K), and the arc current, cathode diameter, and the cathode length are the main influencing factors of the cathode surface temperature.

Cathode surface temperatureArc dischargeCharge coupled deviceTwo-wavelength pyrometry technique

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