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Long-range versus short-range effects in cold molecular ion-neutral collisions

Dörfler, Alexander D. and Eberle, Pascal and Koner, Debasish and Tomza, Michał and Meuwly, Markus and Willitsch, Stefan. (2019) Long-range versus short-range effects in cold molecular ion-neutral collisions. Nature Communications, 10 (1). p. 5429.

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Abstract

The investigation of cold interactions between ions and neutrals has recently emerged as a new scientific frontier at the interface of physics and chemistry. Here, we report a study of charge-transfer (CT) collisions of Rb atoms with N[Formula: see text] and O[Formula: see text] ions in the mK regime using a dynamic ion-neutral hybrid trapping experiment. We observe markedly different CT kinetics and dynamics for the different systems and reaction channels studied. While the kinetics in some channels are consistent with classical capture theory, others show distinct non-universal dynamics. The experimental results are interpreted with the help of classical-capture, quasiclassical-trajectory and quantum-scattering calculations using ab-initio potentials for the highly excited molecular states involved. The theoretical analysis reveals an intricate interplay between short- and long-range effects in the different reaction channels which ultimately determines the CT dynamics and rates. Our results illustrate salient mechanisms that determine the efficiency of cold molecular CT reactions.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Chemische Physik (Willitsch)
05 Faculty of Science > Departement Chemie > Chemie > Physikalische Chemie (Meuwly)
UniBasel Contributors:Dörfler, Alexander and Eberle, Pascal and Koner, Debasish and Meuwly, Markus and Willitsch, Stefan
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
e-ISSN:2041-1723
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
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Last Modified:05 Feb 2020 08:26
Deposited On:05 Feb 2020 08:26

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