Boll, RebeccaErk, BenjaminCoffee, RyanTrippel, SebastianKierspel, ThomasBomme, CédricBozek, John D.Burkett, MitchellCarron, SebastianFerguson, Ken R.Foucar, LutzKüpper, JochenMarchenko, TatianaMiron, CatalinPatanen, MinnaOsipov, TimurSchorb, SebastianSimon, MarcSwiggers, MichelleTechert, SimoneUeda, KiyoshiBostedt, ChristophRolles, DanielRudenko, Artem2023-12-072023-12-072016-03-25https://hdl.handle.net/2097/43975Ultrafast 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.Creative Commons Attribution 4.0 International Licensehttps://creativecommons.org/licenses/by/4.0/Text