Publication: Thermalisation of C2− with noble gases in cold ion traps
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KU-Authors
KU Authors
Co-Authors
Mant, Barry P.
Gianturco, Franco A.
Wester, Roland
Gonzalez-Sanchez, Lola
Publication Date
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NO
Journal Title
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Abstract
The potential energy surfaces for C2− (Σg+2) interacting with He, Ne and Ar are calculated using ab initio quantum chemistry methods. The PES are used to carry out coupled-channel quantum scattering calculations for the three systems to obtain the rotationally inelastic scattering cross sections from which the rotationally inelastic state-changing rate coefficients are computed. These rate coefficients are then used to compute thermalisation times of C2− in an ion trap employing He, Ne or Ar as different, and possible, buffer gases. A detailed analysis of their comparative collisional efficiencies is presented for guidance in trap modeling studies.
Source
Publisher
Elsevier
Subject
Physics, atomic, molecular and chemical, Spectroscopy
Citation
Has Part
Source
International Journal of Mass Spectrometry
Book Series Title
Edition
DOI
10.1016/j.ijms.2020.116426