| 摘要 |
PURPOSE:To reduce the outer dimension of a ceramic to the conventional level and to insure wind flow in a radiator panel, by providing a high frequency attenuating means on a high frequency path in the vacuum from a gap to be formed by an output side magnetic pole and the collector bottom face section to a ceramic. CONSTITUTION:In a path in the vacuum for passing the leakage electromagnetic wave, a high frequency attenuator is applied on the surface of said path where a high frequency attenuator such as the tantalum, titanium, etc. is arranged or the stainless steel is sprayed in a thin film on the surface of a collector side vacuum interior (a) of an output side magnetic pole, the inside (b) of a sealing pan 4a and the vacuum inner and outer faces of a collector body 5. Consequently the wind flow passing through a radiating panel 6 is insured with the conventional outer dimension of an insulative ceramic. |
