Relative work function, surface composition and topography of “pedigreed” impregnated tungsten dispenser cathodes

A study has been made of the variation in work function, surface composition, and topography of 5:3:2 impregnated tungsten dispenser cathodes made under carefully controlled conditions (pedigreed cathodes). Despite these conditions several cathodes had unexpected deposits on their emitting surfaces,...

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Bibliographic Details
Published in:Applied surface science 1985-01, Vol.24 (3), p.557-574
Main Authors: Tomich, D.H., Mescher, J.A., Wittberg, T.N., Grant, J.T.
Format: Article
Language:English
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Summary:A study has been made of the variation in work function, surface composition, and topography of 5:3:2 impregnated tungsten dispenser cathodes made under carefully controlled conditions (pedigreed cathodes). Despite these conditions several cathodes had unexpected deposits on their emitting surfaces, and one showed a variation in work function and composition across the surface during activation.
ISSN:0169-4332
1873-5584
DOI:10.1016/0169-4332(85)90199-0