Circularly polarized x rays: another probe of ultrafast molecular decay dynamics |
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Authors: | Travnikova Oksana Liu Ji-Cai Lindblad Andreas Nicolas Christophe S?derstr?m Johan Kimberg Victor Gel'mukhanov Faris Miron Catalin |
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Institution: | Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France. |
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Abstract: | 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 → a(1g)* inner-shell excitation by circularly polarized x rays in SF(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. |
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