Assigning x-ray absorption spectra by means of soft-x-ray emission spectroscopy

• The possibility to symmetry assign x-ray absorption spectra using x-ray emission spectroscopy is demonstrated. The oxygen K spectra of CO2 are used to illustrate the possibility to assign core excitations through excitation-energy and angular dependence of resonantly excited x-ray emission spectra. The Rydberg-associated structures just below the ionization threshold in the O K x-ray absorption spectrum are assigned to be mainly due to excitations to orbitals of sigma(g) character. The results, which contradict some previous literature assignments, are supported by quantum-chemical calculations.

Keyword

HIGH-RESOLUTION

SYMMETRY-BREAKING

MOLECULAR-OXYGEN

STATIC EXCHANGE

CO2

POLARIZATION

FLUORESCENCE

ANISOTROPY

RESONANCES

NATURAL SCIENCES

NATURVETENSKAP

Publication and Content Type

ref (subject category)

art (subject category)