Nongni FT, Kalus R, Benhenni M, Gadéa FX, Yousfi M. Ternary recombination of excited Ar+(P1/22) ions, established experimental results reinterpreted with a new extended model.
J Chem Phys 2024;
160:161101. [PMID:
38647297 DOI:
10.1063/5.0202524]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024] Open
Abstract
For many years, the recombination of excited ions of argon, Ar+(P1/22), has been assumed negligible under ambient conditions as compared to the recombination of ground-state ions, Ar+(P3/22). This opinion was confronted with detailed experimental results that seem to clearly support it. Here, we propose a new interpretation in light of our recent calculations, which shows that the recombination efficiency is comparable for both fine-structure states. Noteworthily, in our model leading to a picture consistent with the experiment, residual dimer ions emerge from Ar+(P1/22) due to non-adiabatic dynamics effects and interplay in measured data.
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