Molecular predissociation dynamics revealed through multiphoton ionisation spectroscopy. I. The 1B1 states of H2O and D2O
作者： M.N.R. Ashfold , J.M. Bayley , R.N. Dixon
DOI: 10.1016/0301-0104(84)80004-X
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摘要: Abstract Several vibronic levels of the C′ 1 A′ state NH 3 and ND have been further investigated via three-photon absorption (four-photon ionisation) spectroscopy. Careful comparisons between experimentally observed + multiphoton ionisation spectra predicted use appropriate symmetric-top rotational linestrength theory reveal significant level-dependent differences for all C′-state with ν′ 2 ⩾ 3. Predissociation excited state, brought about by non-adiabatic coupling to high lower-lying Ā A″ ??? is advanced as likely cause these discrepancies. Attempts extend this study an investigation intervening B t E″-state predissociation dynamics were handicapped spectroscopic perturbations attributable Coriolis interactions within state. Nevertheless it has proved possible offer a consistent rationale trends in behaviour displayed not only various B-state but also documented higher electronic states ammonia terms similar A
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