High Rydberg states of DABCO: Spectroscopy, ionization potential, and comparison with mass analyzed threshold ionization

Maarten G.H. Boogaarts, Iwan Holleman, Rienk T. Jongma, David H. Parker, Gerard Meijer, Uzi Even

Research output: Contribution to journalArticlepeer-review

Abstract

Doubly-resonant excitation/vibrational autoionization is used to accurately determine the ionization potential (IP) of the highly symmetric caged amine 1,4 diazabicyclo[2,2,2]octane (DABCO). The IP of DABCO excited with one quantum of the v24(e′) vibration lies at (59 048.62±0.03) cm-1, based on fitting 56 components of the npxy Rydberg series (δ=0.406±0.002) to the Rydberg formula. Rydberg state transition energies and linewidths are determined using standard calibration and linefitting techniques. The IP determined from Rydberg state extrapolation is compared with that determined by mass analyzed threshold ionization (MATI). Effects of static electric fields on MATI signals measured for the high Rydberg states are discussed.

Original languageEnglish
Pages (from-to)4357-4364
Number of pages8
JournalJournal of Chemical Physics
Volume104
Issue number12
DOIs
StatePublished - 1996

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