A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The Role of Momentum Partitioning in Covariance Ion Imaging Analysis
Tekijät: Walmsley Tiffany, McManus Joseph W., Kumagai Yoshiaki, Nagaya Kiyonobu, Harries James, Iwayama Hiroshi, Ashfold Michael N. R., Britton Mathew, Bucksbaum Philip H., Downes-Ward Briony, Driver Taran, Heathcote David, Hockett Paul, Howard Andrew J., Lee Jason W. L., Liu Yuson, Kukk Edwin, Milesevic Dennis, Minns Russell S., Niozu Akinobu, Niskanen Johannes, Orr-Ewing Andrew J., Owada Shigeki, Robertson Patrick A., Rolles Daniel, Rudenko Artem, Ueda Kiyoshi, Unwin James, Vallance Claire, Brouard Mark, Burt Michael, Allum Felix, Forbes Ruaridh
Kustantaja: American Chemical Society
Julkaisuvuosi: 2024
Journal: Journal of Physical Chemistry A
Tietokannassa oleva lehden nimi: The journal of physical chemistry. A
Lehden akronyymi: J Phys Chem A
Vuosikerta: 128
Numero: 22
Aloitussivu: 4548
Lopetussivu: 4560
ISSN: 1089-5639
eISSN: 1520-5215
DOI: https://doi.org/10.1021/acs.jpca.4c00999
Verkko-osoite: https://pubs.acs.org/doi/10.1021/acs.jpca.4c00999
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/393523294
We present results from a covariance ion imaging study, which employs extensive filtering, on the relationship between fragment momenta to gain deeper insight into photofragmentation dynamics. A new data analysis approach is introduced that considers the momentum partitioning between the fragments of the breakup of a molecular polycation to disentangle concurrent fragmentation channels, which yield the same ion species. We exploit this approach to examine the momentum exchange relationship between the products, which provides direct insight into the dynamics of molecular fragmentation. We apply these techniques to extensively characterize the dissociation of 1-iodopropane and 2-iodopropane dications prepared by site-selective ionization of the iodine atom using extreme ultraviolet intense femtosecond laser pulses with a photon energy of 95 eV. Our assignments are supported by classical simulations, using parameters largely obtained directly from the experimental data.
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Julkaisussa olevat rahoitustiedot:
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 beamtime. R.F. and F.A. gratefully acknowledge support from the Linac Coherent Light Source, SLAC National Accelerator Laboratory, which is supported by the US Department of Energy, 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 (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 (EP/R010609/1) and the Leverhulme Trust (RPG-2021-257) for financial support. 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 EP/V026690/1. M.Bu., J.U., and T.W. are also grateful to EPSRC for support from EP/S028617/1. T.W. is additionally thankful to EPSRC for studentship funding and Jesus College, Oxford, for a partial fee scholarship. J.U. is also grateful to the States of Jersey for studentship funding. 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 331234. Y.K. acknowledges support by JSPS KAKENHI grant no. 20K14427. J.W.L.L. acknowledges financial support from the Helmholtz-ERC Recognition Award (ERC-RA-0043) of the Helmholtz Association (HGF). A CC-BY license is applied to the author accepted manuscript arising from this submission, in accordance with UKRI open access conditions.
