{"paper":{"title":"Photoinduced enhancement of chemical shift sensitivity to local vibrations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.chem-ph","authors_text":"Alberto De Fanis, Ana Mart\\'inez Guti\\'errez, Andr\\'e Al-Haddad, Antonio Pic\\'on, Bj\\\"orn Lautenschlager, Christoph Bostedt, Daniel E. Rivas, Dawei Peng, Dooshaye Moonshiram, Florian Trinter, Gianluca Geloni, Iyas Ismail, Jes\\'us Gonz\\'alez-V\\'azquez, Jonathan P. Marangos, Lorenzo Paoloni, Marc Simon, Markus Ilchen, Michael Meyer, Oliver Alexander, Pablo Est\\'evez Alonso, Ralph P\\\"uttner, Rebecca Boll, Sergey Usenko, Simon Dold, Sol\\`ene Oberli, Svitozar Serkez, Terry Mullins, Thomas M. Baumann, Tommaso Mazza","submitted_at":"2026-06-16T10:51:25Z","abstract_excerpt":"The advent of novel free-electron laser sources enabling time-resolved x-ray photoelectron spectroscopy (tr-XPS) provides a unique opportunity to monitor local chemical environments in real time by measuring sub-eV shifts in core-electron binding energies. These shifts reflect the interplay between electronic excitation and nuclear motion, an interplay that remains largely unexplored. In our combined theoretical and experimental study of fluoropyridine (C$_5$H$_4$FN), we investigate this link by monitoring the evolving chemical environment at the N and F atomic sites as the photoexcited $S_1$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17776","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.17776/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}