Digest of literature on dielectrics (1970) / Chapter Skim
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Pages 194-196
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From page 194... ...
194 CONDUCTION AND BREAKDOWN IN HIGH VACUUM Prebreakdown Conduction and Phenomena Several papers dealt with the mechanism of field emission from cathodic protrusions, the formation of such protrusions, and their role in the breakdown process (3-14) , The growth and physical characteristics of cathodic protrusions has been investigated using optical microscopes (3-5)
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From page 195... ...
PREBREAKDOWN CONDUCTION AND PHENOMENA 195 than unity and a diameter of the order of a micron, scattered all over the surface of a steel cathode after breakdown. Carbide inclusions present on the steel surface were shown to play no important part in the breakdown.
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From page 196... ...
196 CONDUCTION AND BREAKDOWN IN HIGH VACUUM before breakdown, supported their theory of vacuum breakdown (see next Section)
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