Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering

• We show evidence of dissociation during resonant inelastic soft x-ray scattering Carbon and oxygen K-shell and sulfur L-shell resonant and nonresonant x-ray emission spectra were measured using monochromatic synchrotron radiation for excitation and ionization. After sulfur L-2,L-3-->pi*, sigma* excitation, atomic lines are observed in the emission spectra as a consequence of competition between de-excitation and dissociation. In contrast thr carbon and oxygen spectra show weaker line-shape variations and no atomic Lines. The spectra are compared to results from ab initio calculations. The discussion of the dissociation paths is based on calculated potential energy surfaces and atomic transition energies.

Subject headings

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

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

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

HIGH-RESOLUTION

OCS MOLECULE

ABSORPTION SPECTRA

STATIC EXCHANGE

AUGER-SPECTRA

AB-INITIO

EMISSION

CS2

DYNAMICS

HCL

Optics

Optik

Atomic and molecular physics

Atom- och molekylfysik

NATURAL SCIENCES

Publication and Content Type

ref (subject category)

art (subject category)