title: High-resolution mass spectrometry with a multiple pass quadrupole mass analyzer.
abstract: The peak shape narrows and the resolution improves if the ions are simply reflected back and forth through a conventional quadrupole mass analyzer. CO(+) and N(2)(+) at m/z = 28 are separated to 50% valley with half of the original signal remaining. These two ions can be resolved to baseline (m/Δm) = 5000 with 1% of the original signal remaining.
authors.affiliation: Ames Laboratory [Formula: see text] U.S. Department of Energy, Department of Chemistry, Iowa State University, Ames Iowa 50011.
authors.forename: M H
authors.initials: MH
authors.lastname: Amad
authors.forename: R S
authors.initials: RS
authors.lastname: Houk