Long pulse electron beams produced from carbon fiber cathodes

@article{Fisher1998LongPE,
  title={Long pulse electron beams produced from carbon fiber cathodes},
  author={Allan Fisher and Eusebio Garate},
  journal={12th International Conference on High-Power Particle Beams. BEAMS'98. Proceedings (Cat. No.98EX103)},
  year={1998},
  volume={1},
  pages={133-136 vol.1}
}
Carbon fiber cathodes have been used to produce electron beams from 10's of nanoseconds to 10's of microseconds. Cathode areas can vary from a single fiber (/spl sim/10 micron diameter) to many hundreds of square cm. The micron size diameter of the fiber is responsible for the high electric field produced at the tips which allows operation of these cathodes at average fields as low as 10 kV/cm. During operation the emitting tips heat up and some plasma forms and erosion takes place. However… CONTINUE READING

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