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Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses

MPG-Autoren
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Foucar,  Lutz
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

Externe Ressourcen

http://scitation.aip.org/deliver/fulltext/aca/journal/sdy/3/4/1.4944344.pdf;jsessionid=35actttdn08rb.x-aip-live-03?itemId=/content/aca/journal/sdy/3/4/10.1063/1.4944344&mimeType=pdf&containerItemId=content/aca/journal/sdy
(beliebiger Volltext)

http://dx.doi.org/10.1063/1.4944344
(beliebiger Volltext)

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Zitation

Boll, R., Erk, B., Coffee, R., Trippel, S., Kierspel, T., Bomme, C., et al. (2016). Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses. Structural Dynamics, 3: 043207. doi:10.1063/1.4944344.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002A-1E13-2
Zusammenfassung
Ultrafast electron transfer in dissociating iodomethane and fluoromethane molecules was studied at the Linac Coherent Light Source free-electron laser using an ultraviolet-pump, X-ray-probe scheme. The results for both molecules are discussed with respect to the nature of their UV excitation and different chemical properties. Signatures of long-distance intramolecular charge transfer are observed for both species, and a quantitative analysis of its distance dependence in iodomethane is carried out for charge states up to I21+. The reconstructed critical distances for electron transfer are in good agreement with a classical over-the-barrier model and with an earlier experiment employing a near-infrared pump pulse.