Physics – Chemical Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jchph.122n4302l&link_type=abstract
Journal of Chemical Physics, Volume 122, Issue 14, pp. 144302-144302-10 (2005).
Physics
Chemical Physics
35
Diffuse Spectra, Predissociation, Photodissociation, Electric And Magnetic Moments, Polarizability, And Magnetic Susceptibility, Oscillator And Band Strengths, Lifetimes, Transition Moments, And Franck-Condon Factors
Scientific paper
Separate coupled-channel Schrödinger-equation (CSE) models of the interacting 1Πu (b,c,o) and 3Πu (C,C') states of N2 are combined, through the inclusion of spin-orbit interactions, to produce a five-channel CSE model of the N2 predissociation. Comparison of the model calculations with an experimental database, consisting principally of detailed new measurements of the vibrational and isotopic dependence of the 1Πu linewidths and lifetimes, provides convincing evidence that the predissociation of the lowest 1Πu levels in N2 is primarily an indirect process, involving spin-orbit coupling between the b 1Πu- and C 3Πu-state levels, the latter levels themselves heavily predissociated electrostatically by the C' 3Πu continuum. The well-known large width of the b(v=3) level in 14N2 is caused by an accidental degeneracy with C(v=9). This CSE model provides the first quantitative explanation of the predissociation mechanism for the dipole-accessible 1Πu states of N2, and is thus likely to prove useful in the construction of realistic radiative-transfer and photochemical models for nitrogen-rich planetary atmospheres.
Gibson Stephen T.
Lefebvre-Brion H.
Lewis Brenton R.
Robbe J. M.
Zhang Wanchuan
No associations
LandOfFree
Predissociation mechanism for the lowest 1Πu states of N2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Predissociation mechanism for the lowest 1Πu states of N2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Predissociation mechanism for the lowest 1Πu states of N2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-976207