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Design and characterization of a linear quadrupole ion trap for high-resolution Coulomb-crystal time-of-flight mass spectrometry

Rösch, Daniel and Gao, Hong and Kilaj, Ardita and Willitsch, Stefan. (2016) Design and characterization of a linear quadrupole ion trap for high-resolution Coulomb-crystal time-of-flight mass spectrometry. EPJ Techniques and Instrumentation, 3. p. 5.

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Abstract

We present and discuss in detail the design and characterization of a new linear quadrupole ion trap with additional ion ejection and acceleration electrodes that is coupled to a time-of-flight mass spectrometer. Mass spectra of Coulomb crystals consisting of Ca + ,CaO + and CaOH + ions were recorded with a post-ejection-acceleration scheme yielding a mass resolution of m / Δ m ≈700. The second order rate constant for the reaction Ca + + N 2 O → CaO + + N 2 was measured to test the usability of this apparatus for ion-molecule reaction studies. The rate constant was found to be 5.49(32)·10 −11 cm 3 s −1 which is compared with previous literature values. Owing to the high mass resolution achieved, the present instrument is an ideal tool for the study of the products of complex chemical reactions involving Coulomb crystals.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Chemische Physik (Willitsch)
UniBasel Contributors:Willitsch, Stefan
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:EDP Sciences with Springer and Società Italiana di Fisica
e-ISSN:2195-7045
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
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Last Modified:27 Feb 2017 13:58
Deposited On:27 Feb 2017 13:58

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