European Conference on Trapped Ions | hybrid ECTI 2021

Charge transfer reactions between rare gas ions and polar molecules

22 Nov 2021, 10:00

25m

Tsuzuki Lecture Theatre, St. Anne's college (Oxford + Zoom)

invited talk Oxford satellite meeting (BrECTI) + hybrid ECTI

Speaker

Andriana Tsikritea

Description

Ca+ Coulomb crystals, containing up to a few hundred laser-cooled ions, are used as a cold scaffold to undertake reaction studies between sympathetically cooled, rare gas ions (Xe+
, Kr+ and Ar+) and polar molecules (NH3, ND3, H2O and D2O) [1-3]. The Coulomb crystal environment allows for the accurate calculation of reaction rate coefficients under almost perturbation-free conditions, thanks to the combination of two complementary and sensitive detection techniques (fluorescence imaging and time-of-flight mass spectrometry). Experimental findings are compared to theoretical predictions from capture theory models, developed to describe the interaction between ions and polar neutrals. The success of capture theories in predicting the behaviour of these reactions, and potential implication for astrochemical models, will be discussed.

References
[1] L. S. Petralia, A. Tsikritea, J. Loreau, T. P. Softley, and B. R. Heazlewood, Nat. Commun., 11, 1, 2020.
[2] A. Tsikritea, K. Park, P. Bertier, J. Loreau, T. P. Softley, and B. R. Heazlewood, Chem. Sci., 12, 10005, 2021
[3] A. Tsikritea, J. A. Diprose, J. Loreau, and B. R. Heazlewood, 2021 (In preparation)