Gettering device and system for a cathode ray tube.

摘要

A gettering system is provided for cathode ray tubes which have a sensitive cathode that can be damaged when nitrogen is released at first switch-on of the cathode. The gettering system consists of a barium getter providing a high capacity for residual gases throughout tube life and a separate titanium getter which provides a film of titanium having a high sorption speed for the nitrogen which is released at first switch-on of the cathode.