X-Ray Absorption Measured in the Resonant Auger Scattering Mode

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.073001· OSTI ID:21134131

Hikosaka, Y; Shigemasa, E; Kaneyasu, T ^[1]; Velkov, Y; Liu, J; Gelmukhanov, F ^[2]; Tamenori, Y ^[3]

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1. UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585 (Japan)
2. Department of Theoretical Chemistry, Roslagstullsbacken 15, Royal Institute of Technology, S-106 91 Stockholm (Sweden)
3. Japan Synchrotron Radiation Research Institute, Sayo 679-5198 (Japan)

We report both experimental and theoretical studies on x-ray absorption measured in the resonant Auger scattering mode of gas phase carbon monoxide near the O1s{yields}2{pi} region. Both experiment and theory display a crucial difference between the x-ray absorption profiles obtained in the conventional and resonant scattering modes. Lifetime vibrational interference is the main source of the difference. It is demonstrated that such interference, which arises from a coherent excitation to overlapping intermediate levels, ruins the idea for obtaining x-ray absorption spectra in a lifetime broadening free regime.

• OSTI ID: 21134131
• Journal Information: Physical Review Letters, Vol. 101, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.101.073001; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ABSORPTION SPECTRA
CARBON MONOXIDE
EXCITATION
INTERFERENCE
LIFETIME
RESONANCE SCATTERING
X RADIATION
X-RAY SPECTRA