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Point‐cathode electron sources‐Electron optics of the initial diode region: Errata and addendum
1.We are grateful to Professor J. B. LePoole and Mr. J. E. Barth of the Technische Hogeschool Delft’s Laboratorium voor Technische Natuur Kunde for calling this to our attention, and for discussing other aspects of the paper with us.
2.J. C. Wiesner and T. E. Everhart, J. Appl. Phys. 44, 2140 (1973).
3.T. E. Everhart, J. Appl. Phys. 38, 4944 (1967).
4.The form factor γ is defined as where a is the on‐axis radius of curvature of the equipotential taken as the cathode surface, and is the radius of the core sphere.
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