High yield pan-shaped getter device

Details High yield pan-shaped getter device High yield pan-shaped getter device

H - Electricity

01

J

313/110

H01J 29/94 (2006.01) H01J 7/18 (2006.01)

Patent

CA 1292271

HIGH YIELD PAN SHAPED GETTER DEVICE ABSTRACT An evaporable getter device for mounting in an electron tube is provided which comprises a pan-shaped container having a vertical side wall formed around the perimeter of a disc shaped bottom wall and a pulverized getter metal vapour releasing material pressed into the space formed by said side wall and said bottom wall. There is also provided a first heat transfer retarding means which delays the transfer of heat in a circumferential direction through the getter metal vapour releasing material. There is also provided a second heat transfer retarding means which delays the transfer of heat in a radial direction through the getter metal vapour releasing material. When the getter device is heated by currents induced From a radio frequency field created by a coil positioned outside the tube, opposite the getter device, high yields of getter metal are released in a short time without detachment of the getter material residues from the container.

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