Temperature-Dependent Reaction Kinetics of the Carbanions Cn– and CnH– (n = 2 and 4) with H Atoms in a Cryogenic Ion Trap
Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide We report on the temperature-dependent reactions of the carbon-chain anions C 2 – and C 4 –, as well as the hydrocarbons C 2 H – and C 4 H – with H atoms in the temperature regime between 8 and 296 K. The experiments have been carried out in a temperature-variable radiofrequency multipole ion trap. From the measured kinetics, we have derived reaction rate coefficients that are constant for all considered systems in the measured temperature regime. For the C 2 –, C 4 –, and C 4 H – anions, the values are about a factor of 2 smaller than the Langevin capture rate coefficient, while for C 2 H –, the measured value agrees with the Langevin value. No theoretical calculations are available at present to explain this. All rate coefficients are in good agreement with previous measurements at room temperature.
Authors: Christine Lochmann, Sruthi Purushu Melath, Michael Hauck, Robert Wild, Roland Wester
Institution: Universität Innsbruck
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funder: Austrian Science Fund
OpenAlex ID: W4405645211