Resonant x-ray Raman scattering involving avoided crossings in the final-state potential-energy curves

• The role of avoided crossings for resonant x-ray Raman scattering is explored. The strong dependence of the electronic transition amplitudes on internuclear distance at avoided crossings causes new, and even anomalous, spectral features, and can bring about a breakdown of the generally accepted participator or spectator classification of the transitions. We report, and apply the theory on, an experimental observation of the electron decay of the N 1s-->pi* core-excited level in N-2 the B(2)Sigma (+)(u) final state with peculiar, non-Franck-Condon, vibrational intensity distributions.

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

core-excited states

vibrational structure

carbon-monoxide

decay spectra

excitation

molecules

dynamics

n-2

photoemission

spectroscopy

Optics

Optik

Atomic and molecular physics

Atom- och molekylfysik

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)