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An ion trap time-of-flight mass spectrometer with high mass resolution for cold trapped ion experiments

TitleAn ion trap time-of-flight mass spectrometer with high mass resolution for cold trapped ion experiments
Publication TypeJournal Article
Year of Publication2017
AuthorsSchmid, PC, Greenberg, JA, Miller, MI, Loeffler, K, Lewandowski, HJ
JournalReview of Scientific Instruments
Volume88
Issue12
Pagination123107
Date Published2017-12
ISSN0034-6748
Abstract

Trapping molecular ions that have been sympathetically cooled with laser-cooled atomic ions is a useful platform for exploring cold ion chemistry. We designed and characterized a new experimental apparatus for probing chemical reaction dynamics between molecular cations and neutral radicals at temperatures below 1 K. The ions are trapped in a linear quadrupole radio-frequency trap and sympathetically cooled by co-trapped, laser-cooled, atomic ions. The ion trap is coupled to a time-of-flight mass spectrometer to readily identify product ion species and to accurately determine trapped ion numbers. We discuss, and present in detail, the design of this ion trap time-of-flight mass spectrometer and the electronics required for driving the trap and mass spectrometer. Furthermore, we measure the performance of this system, which yields mass resolutions of m/Δm ≥ 1100 over a wide mass range, and discuss its relevance for future measurements in chemical reaction kinetics and dynamics.

URLhttp://aip.scitation.org/doi/10.1063/1.4996911
DOI10.1063/1.4996911
Short TitleReview of Scientific Instruments