Method and apparatus for detecting evaporation of getter materia

Details Method and apparatus for detecting evaporation of getter materia Method and apparatus for detecting evaporation of getter materia

1985-12-04

1987-05-26

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With start up, flashing or aging

445 55, H01J 942

Patent

active

046682031

ABSTRACT:
A method for checking the evaporation of a pellet of getter material such as barium on the walls of the envelope of a cathode-ray tube during manufacture. The pressure within the cathode-ray tube is measured during the operation involving stabilization of the cathode material by measuring the positive-ion charge within the tube.

REFERENCES:
patent: 2141644 (1938-12-01), Eddison
patent: 2861861 (1958-11-01), Hoffmann
patent: 3227506 (1966-01-01), De Backer
patent: 4038616 (1977-07-01), Ball
patent: 4445872 (1984-05-01), Ottos
Le Vide, No. 109, Jan.-Feb. 1964, pp. 631-637, Paris, France; P. Meyerer.

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