title: Comparative performance of tripole and quadrupole ion guides at elevated pressure.
abstract: This study presents the first practical demonstration of an operational tripole ion guide. The transmission was measured for both the tripole and quadrupole ion guides at 1 Torr pressure. It was found that the quadrupole provides 2.5-3 times better ion transmission efficiency. Two different electric schemes for driving the tripole were tested. Similar transmission characteristics were obtained in both cases. A brief analysis of the tripole performance and ways to improve it is presented.
authors.affiliation: MassTech Inc, Columbia, MD 21046, USA. alexander.misharin@apmaldi.com
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Misharin
authors.forename: Eugene
authors.initials: E
authors.lastname: Moskovets
authors.forename: Chaminda M
authors.initials: CM
authors.lastname: Gamage
authors.forename: Vladimir M
authors.initials: VM
authors.lastname: Doroshenko
authors.forename: Andrey N
authors.initials: AN
authors.lastname: Vilkov