Circularly Polarized X Rays: Another Probe of Ultrafast Molecular Decay Dynamics
Journal Article
·
· Physical Review Letters
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, B.P. 48, F-91192 Gif-sur-Yvette Cedex (France)
- Department of Theoretical Chemistry, Roslagstullsbacken 15, Royal Institute of Technology, S-106 91 Stockholm (Sweden)
Dissociative nuclear motion in core-excited molecular states leads to a splitting of the fragment Auger lines: the Auger-Doppler effect. We present here for the first time experimental evidence for an Auger-Doppler effect following F1s{yields}a{sub 1g}* inner-shell excitation by circularly polarized x rays in SF{sub 6}. In spite of a uniform distribution of the dissociating S-F bonds near the polarization plane of the light, the intersection between the subpopulation of molecules selected by the core excitation with the cone of dissociation induces a strong anisotropy in the distribution of the S-F bonds that contributes to the scattering profile measured in the polarization plane.
- OSTI ID:
- 21554440
- Journal Information:
- Physical Review Letters, Vol. 105, Issue 23; Other Information: DOI: 10.1103/PhysRevLett.105.233001; (c) 2010 American Institute of Physics; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
ANISOTROPY
DECAY
DISSOCIATION
DISTRIBUTION
DOPPLER EFFECT
INNER-SHELL EXCITATION
MOLECULES
POLARIZATION
PROBES
SCATTERING
SULFUR FLUORIDES
VISIBLE RADIATION
X RADIATION
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIZING RADIATIONS
RADIATIONS
SULFUR COMPOUNDS
ANISOTROPY
DECAY
DISSOCIATION
DISTRIBUTION
DOPPLER EFFECT
INNER-SHELL EXCITATION
MOLECULES
POLARIZATION
PROBES
SCATTERING
SULFUR FLUORIDES
VISIBLE RADIATION
X RADIATION
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIZING RADIATIONS
RADIATIONS
SULFUR COMPOUNDS