Time- and Spectrum-Resolved Study of a Single Cathode Spot in Vacuum

  title={Time- and Spectrum-Resolved Study of a Single Cathode Spot in Vacuum},
  author={A. V. Batrakov and S. A. Popov and Ralf Methling and Dirk Uhrlandt and K. Weltmann},
  journal={IEEE Transactions on Plasma Science},
Optical emission of a single cathode spot is studied to improve understanding of cathode spot initiation and dynamics. A single cathode spot was generated with high reproducibility in a gap under UHV conditions at a liquid Ga-In-alloy cathode. Discharges were initiated by rectangular voltage pulses of 100-ns length produced by a cable generator. Spot radiation was recorded in time with a high temporal and spectral resolution by a spectrograph coupled with a streak camera and a CCD camera… CONTINUE READING
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