Modified Bayard-Alpert Gauge with X-Ray Suppression

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1718592· OSTI ID:4663139

Lee, D.

A modified Bayard-Alpert inverted ionization gage was developed in which the effective x-ray limit is reduced by one or two orders of magnitude. In this modified gage, a second collector is added which is biased at typically 60 v below that of the first collector, and the collector currents are subtracted. The difference current corresponds to that of a gage with a sensitivity one-third of that of a standard gage, but with a greatly reduced x-ray current since the component x-ray currents nearly cancel. The critical parts of the modified gage are discussed. The gage should be useful in reading pressures in the 10^-12 Torr region. (D.L.C.)

• Research Organization: Univ. of Illinois, Urbana
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-032366
• OSTI ID: 4663139
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 7 Vol. 34; ISSN 0034-6748; ISSN RSINAK
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARGON
ATOMS
BEAMS
CURRENTS
ELECTRIC ARCS
ELECTRIC CHARGES
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRONS
EMISSION
ENERGY LEVELS
EXCITATION
GAGES
HYDROGEN
INSTRUMENTS AND INSTRUMENTATION
INTERACTIONS
ION SOURCES
IONIZATION
IONS
LIFETIME
MEASURED VALUES
MERCURY
METALS
METASTABLE STATES
PARTICLE TRACKS
PLASMA
PRESSURE
PRODUCTION
SENSITIVITY
STANDARDS
SURFACES
TARGETS
VACUUM
VAPORS
X RADIATION