Vacuum gauge

Details Vacuum gauge Vacuum gauge

1980-04-04

1981-12-22

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Discharge device load with fluent material supply to the...

Electron or ion source

313 7, 324462, H05B 3126

Patent

active

043073239

ABSTRACT:
A hot filament ionization gauge is provided with a very small diameter and/or very short collector to limit interception of X-ray flux. Suitable gauge sensitivity is achieved by additionally collecting ions at the collector support, which is shielded from the X-ray flux by a shield. Collection of ions by the shield is avoided by maintaining the shield at grid potential.

REFERENCES:
patent: 3243649 (1966-03-01), Kreisman
patent: 3394286 (1968-07-01), Brock
patent: 3465189 (1969-09-01), Redhead
patent: 3466484 (1969-09-01), Clay, Jr. et al.
patent: 3742343 (1973-06-01), Pittaway
patent: 3906237 (1975-09-01), Pittaway

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