PhysRevA.91.033408.pdf (587.67 kB)
Coulomb crystal mass spectrometry in a digital ion trap
journal contribution
posted on 2023-06-08, 23:05 authored by Nabanita Deb, Laura L Pollum, Alexander D Smith, Matthias KellerMatthias Keller, Christopher J Rennick, Brianna R Heazlewood, Timothy P SoftleyWe present a mass spectrometric technique for identifying the masses and relative abundances of Coulomb-crystallized ions held in a linear Paul trap. A digital radio-frequency wave form is employed to generate the trapping potential, as this can be cleanly switched off, and static dipolar fields are subsequently applied to the trap electrodes for ion ejection. Close to 100% detection efficiency is demonstrated for Ca+ and CaF+ ions from bicomponent Ca+ - CaF+ Coulomb crystals prepared by the reaction of Ca+ with CH3F. A quantitative linear relationship is observed between ion number and the corresponding integrated time-of-flight (TOF) peak, independent of the ionic species. The technique is applicable to a diverse range of multicomponent Coulomb crystals—demonstrated here for Ca+ - NH3+ - NH4+ and Ca+ - CaOH+ - CaOD+ crystals—and will facilitate the measurement of ion-molecule reaction rates and branching ratios in complicated reaction systems.
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- Published
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- Published version
Journal
Physical Review AISSN
1050-2947Publisher
American Physical SocietyExternal DOI
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3Volume
91Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2015-11-10First Open Access (FOA) Date
2015-11-10First Compliant Deposit (FCD) Date
2015-11-10Usage metrics
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