METHOD FOR DEGASSING AND ACTIVATING THE GAS ABSORBER IN AN X-RAY TUBE AND X-RAY TUBE CATHODE FOR IMPLEMENTATION THEREOF Russian patent published in 2022 - IPC H01J35/20 H01J9/395 H01J7/18 

FIELD: vacuum technology.

SUBSTANCE: invention relates to the field of vacuum technology for maintaining high vacuum in various appliances, in particular, to the field of evacuation of metal-ceramic X-ray tubes. Method for degassing and activating the gas absorber in an X-ray tube includes placing the gas absorber inside the vacuum volume of the X-ray tube and subsequently heating said absorber to the temperature of thermal degassing of the X-ray tube, supplying a filament current to the emitter with a magnitude of at least 110% of the nominal value thereof, heating the emitter and additionally increasing the temperature of the gas absorber, holding and subsequently cooling. The X-ray tube cathode consists of a cathode cup, a focusing electrode, emitters placed in the installation slots of the cathode cup and secured on current leads installed in ceramic sleeves placed in the setting seats of the cathode cup, an annular hollow channel is made between the external surface of the cathode cup and the internal surface of the focusing electrode, said channel being in communication with the installation slots of the cathode cup, and the gas absorber is placed in the annular hollow channel.

EFFECT: increase in the efficiency of activation of getters in X-ray tubes, increase in the time of maintenance of working vacuum in the X-ray tube and life thereof, structural simplification of the X-ray tube.

10 cl, 5 dwg