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Abstract
A highly efficient pseudo continuous resonance enhanced multiphoton ionisation detection scheme is presented that combines the sensitivity of resonance enhanced multiphoton ionisation (REMPI) with high resolution. This detection scheme is employed to obtain the A(v′ = 1) ← X 1(v = 0) spectra of 208Pb19F with a resolution of 90 MHz. The observed 19F hyperfine splittings are analysed in terms of effective hyperfine parameters that describe the interaction between the fluorine nuclear spin and that of the unpaired electron in the A and X 1 states of the molecule.
Acknowledgements
We acknowledge support of the Department of Energy EPSCoR program (DOE-07ER46361.) Work by GEH and TJS at Brookhaven National Laboratory was performed under Contract No. DE-AC02-98CH10886 with the US Department of Energy and supported by its Division of Chemical Sciences, Geosciences, & Biosciences. We would also like to thank M.G. Kozlov, A.N. Petrov, and A. Titov. As we were correcting the proofs to this document, these workers brought to our attention a sign error in references 22 and 23 that carried over to reference 10. Their timely intervention prevented this sign error from carrying over to this work as well.