A flow system used for continuous measurement of the gases evolved from aluminized glass during bombardment with 20 kev electrons is described. The system is also suitable for gettering measurements. A cathode-ray tube containing the samples is sealed directly to the source of a mass spectrometer. Calibration of the first flow system built revealed the gettering of oxygen by the graphite-silicate conductive coating and the hot metal parts of the electron gun of the cathode-ray tube. This gettering was minimized in a second flow system. It was found that oxygen constitutes at least 95% of the gas evolved from each of five types of glasses investigated. Also, a graphite-silicate coating can play a dual role in a cathode-ray tube; when not bombarded by electrons it is an active getter for oxygen, but when bombarded it is a source of oxygen, carbon monoxide, and carbon dioxide.
No takes yet. Share an insight, caveat, or question.
Todd et al. (1960) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: