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  • American Institute of Physics (AIP)  (1)
  • 2015-2019  (1)
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    Emission properties and back-bombardment for CeB6 compared to LaB6 (2015)
    American Institute of Physics (AIP)
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    Publication Date: 2015-02-11
    Description: The emission properties of CeB 6 compared to LaB 6 thermionic cathodes have been measured using an electrostatic DC gun. Obtaining knowledge of the emission properties is the first step in understanding the back-bombardment effect that limits wide usage of thermionic radio-frequency electron guns. The effect of back-bombardment electrons on CeB 6 compared to LaB 6 was studied using a numerical simulation model. The results show that for 6 μs pulse duration with input radio-frequency power of 8 MW, CeB 6 should experience 14% lower temperature increase and 21% lower current density rise compared to LaB 6 . We conclude that CeB 6 has the potential to become the future replacement for LaB 6 thermionic cathodes in radio-frequency electron guns.
    Print ISSN: 0021-8979
    Electronic ISSN: 1089-7550
    Topics: Physics
    Published by American Institute of Physics (AIP)
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