FIELD RADIATION TYPE ELECTRONIC GUN
PURPOSE:The heating filament itself of negative electrode (chip) or its surface is made of getter material in order to increase vacuumization around chip as well as to secure an electric field electronic gun which is stable for a long time.
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PURPOSE:The heating filament itself of negative electrode (chip) or its surface is made of getter material in order to increase vacuumization around chip as well as to secure an electric field electronic gun which is stable for a long time. |
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