DEVELOPMENT OF A HIGH-RESOLUTION QUADRUPOLE MASS-SPECTROMETER CAPABLEOF DETECTING HE-3 AND HE-4 IN A HYDROGEN ISOTOPE ATMOSPHERE

Authors
HIROKI S ABE T MURAKAMI Y YANAGISHITA K NAKAMURA S
Citation
S. Hiroki et al., DEVELOPMENT OF A HIGH-RESOLUTION QUADRUPOLE MASS-SPECTROMETER CAPABLEOF DETECTING HE-3 AND HE-4 IN A HYDROGEN ISOTOPE ATMOSPHERE, Journal of vacuum science & technology. A. Vacuum, surfaces, and films, 12(5), 1994, pp. 2711-2715
Citations number
18
Categorie Soggetti
Physics, Applied","Materials Science, Coatings & Films
Journal title
Journal of vacuum science & technology. A. Vacuum, surfaces, and films → ACNP
ISSN journal
07342101
Volume
12
Issue
5
Year of publication
1994
Pages
2711 - 2715
Database
ISI
SICI code
0734-2101(1994)12:5<2711:DOAHQM>2.0.ZU;2-B
Abstract
A high-resolution quadrupole mass spectrometer (QMS) which can detect He-3 in HD and He-4 in D2 has been developed. The QMS is equipped with two resolving powers, i.e., a high-resolution mode and a normal one, and voltages for realizing the two modes are supplied by a common circ uit. The high-resolution mode adopts a condition of the second stabili ty zone (zone II) in the Mathieu diagram and can analyze a range of 1- 9 amu. The detectable peak ratios of He-3/HD and He-4/D2 were obtained at roughly 0.1 and 10(-4), respectively. The normal mode adopts the f irst stability zone (zone I) and has an analyzable range of 1-60 amu.