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VOLUME 55 (1992) | ISSUE 6 |
PAGE 325
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Breakdown of vacuum electical insulation
Ptitsyn V. E.
During the emission of electrons in a high current density (je Й 4 X 106 A/cm2), the surface of the tip of a tungsten microcrystal becomes unstable and becomes an effective emitter of neutral atoms. The time required for the field ionization of an atom after desorption from the surface of a microcrystal is calculated. The results are used to develop some new ideas regarding the physical mechanism for the breakdown of vacuum electrical insulation.
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