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Monitoring conical intersections in the ring opening of furan by attosecond stimulated X-ray Raman spectroscopy

Attosecond X-ray pulses are short enough to capture snapshots of molecules undergoing nonadiabatic electron and nuclear dynamics at conical intersections (CoIns). We show that a stimulated Raman probe induced by a combination of an attosecond and a femtosecond pulse has a unique temporal and spectra...

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Bibliographic Details
Published in:Structural dynamics (Melville, N.Y.) N.Y.), 2016-03, Vol.3 (2), p.023601-023601
Main Authors: Hua, Weijie, Oesterling, Sven, Biggs, Jason D, Zhang, Yu, Ando, Hideo, de Vivie-Riedle, Regina, Fingerhut, Benjamin P, Mukamel, Shaul
Format: Article
Language:English
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Summary:Attosecond X-ray pulses are short enough to capture snapshots of molecules undergoing nonadiabatic electron and nuclear dynamics at conical intersections (CoIns). We show that a stimulated Raman probe induced by a combination of an attosecond and a femtosecond pulse has a unique temporal and spectral resolution for probing the nonadiabatic dynamics and detecting the ultrafast (∼4.5 fs) passage through a CoIn. This is demonstrated by a multiconfigurational self-consistent-field study of the dynamics and spectroscopy of the furan ring-opening reaction. Trajectories generated by surface hopping simulations were used to predict Attosecond Stimulated X-ray Raman Spectroscopy signals at reactant and product structures as well as representative snapshots along the conical intersection seam. The signals are highly sensitive to the changes in nonadiabatically coupled electronic structure and geometry.
ISSN:2329-7778
2329-7778
DOI:10.1063/1.4933007