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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP9597176ApriorityCriticalpatent/JPS5322354A/en
Publication of JPS5322354ApublicationCriticalpatent/JPS5322354A/en
PURPOSE: An object in a vacuum is heated by a high frequency coil from the outside of an electron gun room wall which is made by materials of a reduced dielectric loss and eddy-current loss, thereby making efficient gas exhaustion possible.
COPYRIGHT: (C)1978,JPO&Japio
JP9597176A1976-08-131976-08-13Field radiation type electron gun
PendingJPS5322354A
(en)