{"paper":{"title":"Pinning down electron correlations in RaF via spectroscopy of excited states and high-accuracy relativistic quantum chemistry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex","physics.chem-ph"],"primary_cat":"physics.atom-ph","authors_text":"A. A. Breier, A. A. Kyuberis, A. Borschevsky, A. Brinson, A. Dorne, A. Koszor\\'us, A. McGlone, A. Raggio, B. van den Borne, C. Bernerd, C. M. Fajardo-Zambrano, C. Z\\\"ulch, D. Hanstorp, E. Smets, G. Neyens, H. A. Perrett, I. Belo\\v{s}evi\\'c, J. Berbalk, J. Lim, J. R. Reilly, J. Warbinek, J. Wessolek, K. Chrysalidis, K. Gaul, K. M. Lynch, K. T. Flanagan, L. F. Pa\\v{s}teka, L. Lalanne, L. Nies, L. V. Skripnikov, M. Athanasakis-Kaklamanakis, M. Au, M. L. Bissell, M. Nichols, O. Ahmad, P. Imgram, P. Lass\\`egues, Q. Wang, R. Berger, R. F. Garcia Ruiz, R. Heinke, R. P. de Groote, R. W. Field, S. Franchoo, S. Geldhof, S. G. Wilkins, S. Kujanp\\\"a\\\"a, S.-M. Udrescu, S. Rothe, S. W. Bai, T. A. Isaev, T. E. Cocolios, T. F. Giesen, W. C. Mei, X. F. Yang, Y. C. Liu","submitted_at":"2023-08-28T19:32:48Z","abstract_excerpt":"We report the spectroscopy of the 14 lowest excited electronic states in the radioactive molecule radium monofluoride (RaF). The observed excitation energies are compared with fully relativistic state-of-the-art Fock-space coupled cluster (FS-RCC) calculations, which achieve an agreement of >=99.64% (within ~12 meV) with experiment for all states. Guided by theory, a firm assignment of the angular momentum and term symbol is made for 10 states and a tentative assignment for 4 states. The role of high-order electron correlation and quantum electrodynamics effects in the excitation energy of exc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.14862","kind":"arxiv","version":2},"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/2308.14862/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"}