Direct momentum imaging of charge transfer following site-selective ionization

Direct momentum imaging of charge transfer following site-selective ionization

We study ultrafast charge rearrangement in dissociating 2-iodopropane (2−C3H7I) using site-selective core ionization at the iodine atom. Clear signatures of electron transfer between the neutral propyl fragment and multiply charged iodine ions are observed in the recorded delay-dependent ion momentu...

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Détails bibliographiques
Auteurs principaux: Allum, F, Kumagai, Y, Nagaya, K, Harries, J, Iwayama, H, Britton, M, Bucksbaum, PH, Burt, M, Brouard, M, Downes-Ward, B, Driver, T, Heathcote, D, Hockett, P, Howard, AJ, Lee, JWL, Liu, Y, Kukk, E, McManus, JW, Milsesevic, D, Niozu, A, Niskanen, J, Orr-Ewing, AJ, Owada, S, Robertson, PA, Rudenko, A, Ueda, K, Unwin, J, Vallance, C, Walmsley, T, Minns, RS, Rolles, D, Ashfold, MNR, Forbes, R
Format: Journal article
Langue:English
Publié: American Physical Society 2023
Description
Résumé:We study ultrafast charge rearrangement in dissociating 2-iodopropane (2−C3H7I) using site-selective core ionization at the iodine atom. Clear signatures of electron transfer between the neutral propyl fragment and multiply charged iodine ions are observed in the recorded delay-dependent ion momentum distributions. The detected charge-transfer pathway is only favorable within a small (few angstroms), charge-state-dependent spatial window located at C-I distances longer than that of the neutral ground-state molecule. These results offer insights into the physics underpinning charge transfer in isolated molecules and pave the way for a different class of time-resolved studies.

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