Relative sensitivities of Bayard--Alpert gauges and a quadrupole mass spectrometer for hydrogen isotope molecules

Journal Article · Sun Mar 01 04:00:00 EST 1987 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.574111· OSTI ID:6919495

Watanabe, K; Miyake, H; Matsuyama, M

To apply mass spectrometers and ionization gauges to thermonuclear fusion devices such as pressure gauges, we measured the relative sensitivities (normalized to H/sub 2/) of Bayard--Alpert (B--A) gauges (UGD-1S and UGS-1A, ANELVA Co.) and a quadrupole mass spectrometer (MSQ-150A, ULVAC Co.) for hydrogen isotopes. In the case of the B--A gauges, the relative sensitivities were determined as R/sup HD//sub B/ = 1.07, R/sup =//sub B/ = 0.99, R/sup HT//sub B/ = 1.03, R/sup DT//sub B/ = 0.97, and R/sup =//sub B/ = 0.95. In the case of the quadrupole mass spectrometer, they were R/sup HD//sub M/ = 1.09, R/sup =//sub M/ = 0.99, R/sup HT//sub M/ = 1.06, R/sup DT//sub M/ = 0.96, and R/sup =//sub M/ = 0.88. These values agreed quite well with those observed by Dibeler et al. for the mass spectrometer of the magnetic deflection type. It was revealed that the relative sensitivities of the quadrupole mass spectrometer were essentially the same as those for the B--A gauges except T/sub 2/.

• Research Organization: Tritium Research Center, Toyama University, Gofuku 3190, Toyama 930, Japan
• OSTI ID: 6919495
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 5:2; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
BAYARD-ALPERT GAGES
HYDROGEN ISOTOPES
IONIZATION GAGES
ISOTOPES
MASS SPECTROMETERS
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
MOLECULES
PRESSURE GAGES
SENSITIVITY
SPECTROMETERS
SPECTROSCOPY
THERMONUCLEAR DEVICES
VACUUM GAGES