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| Home > Publications database > A localized view on molecular dissociation via electron-ion partial covariance |
| Typ | Amount | VAT | Currency | Share | Status | Cost centre |
| APC | 2773.80 | 26.10 | EUR | 100.00 % | (DEAL) | 28980 / 476152 |
| Sum | 2773.80 | 26.10 | EUR | |||
| Total | 2799.90 |
| Journal Article | PUBDB-2021-03434 |
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2022
Macmillan Publishers Limited, part of Springer Nature
[London]
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Please use a persistent id in citations: doi:10.1038/s42004-022-00656-w doi:10.3204/PUBDB-2021-03434
Abstract: Inner-shell photoelectron spectroscopy provides an element-specific probe of molecular structure, as core-electron binding energies are sensitive to the chemical environment. Short-wavelength femtosecond light sources, such as Free-Electron Lasers (FELs), even enable time-resolved site-specific investigations of molecular photochemistry. Here, we study the ultraviolet photodissociation of chiral (R/S)-1-iodo-2-methylbutane, probed by XUV pulses from the Free-electron LASer in Hamburg (FLASH) through the ultrafast evolution of the iodine 4d binding energy. Methodologically, we introduce electron-ion partial covariance imaging as a technique to isolate otherwise elusive features in a two-dimensional photoelectron spectrum arising from different photofragmentation pathways. The experimental and theoretical results for the time-resolved electron spectra of the 4d$_{3/2}$ and 4d$_{5/2}$ atomic and molecular levels that are disentangled by this method provide a key step towards studying structural and chemical changes from a specific spectator site. We thus pave the way for approaching femto-stereochemistry with FELs.
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