Relative work function, surface composition and topography of “pedigreed” impregnated tungsten dispenser cathodes |
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| Authors: | D H Tomich J A Mescher T N Wittberg J T Grant |
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| Abstract: | 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. |
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