Characterization of the potential minimum of the Fprime0u+(1D2) ion-pair state of Cl2 using (1+2prime) optical-optical double resonance excitation and mass-resolved ion detection

Trevor Ridley, Robert Donovan, Kenneth Lawley

Research output: Contribution to journalArticlepeer-review

Abstract

Vibrational levels of the F′0u+(1D2), F0u   +(3P0), and D0u+(3P2) ion-pair states of 35Cl2 and 35Cl37Cl in the range 62 500–67 600 cm−1 have been observed using (1 + 2′) optical-optical double resonance excitation with mass-resolved ion detection. The strong F′0u+(1D2)/F0u   +(3P0) coupling has been modelled by a coupled two-state calculation. An optimized fit of the experimental data used an F′0u+(1D2) state potential with a Te of 65 177 cm−1 and an Re of ≈2.636 Å with a coupling constant of ≈430 cm−1. The calculation assigns the first observed members of the F′0u+(1D2) state progression of 35Cl2 and 35Cl37Cl at 64 998 and 65 094 cm−1, respectively, as transitions to v = 0.
Original languageEnglish
Article number104302
Number of pages7
JournalThe Journal of Chemical Physics
Volume135
Issue number10
DOIs
Publication statusPublished - Sep 2011

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