Direct momentum imaging of charge transfer following site-selective ionization

Allum, Felix, Kumagai, Yoshiaki and Nagaya, Kiyonobu , et al. (2023) Direct momentum imaging of charge transfer following site-selective ionization. Physical Review A, 108 (4), [043113]. (doi:10.1103/PhysRevA.108.043113).

Record type: Article

Abstract

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.

Text

2_IP_UV_XUV_NoMarkup - Accepted Manuscript

Available under License University of Southampton Accepted Manuscript Licence.

Download (1MB)

More information

Accepted/In Press date: 25 September 2023

e-pub ahead of print date: 23 October 2023

Published date: October 2023

Additional Information: Funding Information: The experiment was performed at SACLA with the approval of JASRI and the program review committee (Proposal No. 2021A8038 Forbes). We thank the technical and scientific staff of SACLA for their hospitality and support before and during the beam time. R.F. and F.A. gratefully acknowledge support from the Linac Coherent Light Source, SLAC National Accelerator Laboratory, which is supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-76SF00515. D.R. and A.R. were supported by Contract No. DE-FG02-86ER13491 from the same funding agency. J.W.L.L. acknowledges financial support via the Helmholtz-ERC Recognition Award (Award No. ERC-RA-0043) of the Helmholtz Association (HGF). B.D.W. thanks the CLF and the University of Southampton for a studentship. R.S.M. thanks the EPSRC for financial support (Grant No. EP/R010609/1). J.M., M.Bro., D.M., D.H., P.A.R., C.V., and A.J.O.E. gratefully acknowledge the support of EPSRC Programme Grant No. EP/V026690/1. M.Bu. and T.W. are also grateful to EPSRC for support from Grant No. EP/S028617/1. T.W. is additionally thankful to EPSRC for studentship funding and Jesus College, Oxford, for a partial fee scholarship. P.H.B., A.J.H., and M.Bri. were supported by the National Science Foundation. J.N. acknowledges Academy of Finland funding via Project No. 331234. Y.K. acknowledges support by JSPS KAKENHI Grant No. 20K14427. Publisher Copyright: © 2023 American Physical Society.