{"paper":{"title":"The $a^3\\Sigma^+$ state of KCs revisited: hyperfine structure analysis and potential refinement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atm-clus","physics.chem-ph","physics.comp-ph"],"primary_cat":"physics.atom-ph","authors_text":"A. Pashov, A. V. Oleynichenko, A. V. Stolyarov, A. Zaitsevskii, E. A. Pazyuk, L. V. Skripnikov, M. Tamanis, R. Ferber, V. Krumins","submitted_at":"2022-01-18T08:58:52Z","abstract_excerpt":"Laser-induced fluorescence spectra of the $c^3\\Sigma^+(v_{c},J_{c}=N_{c})\\rightarrow a^3\\Sigma^+(v_{a},N_{a} = J_{c} \\pm 1)$ transitions excited from the ground $X^1\\Sigma^+$ state of $^{39}$K$^{133}$Cs molecule were recorded with Fourier-transform spectrometer IFS125-HR (Bruker) at the highest achievable spectral resolution of 0.0063 cm${}^{-1}$. Systematic study of the hyperfine structure (HFS) of the $a^3\\Sigma^+$ state for levels with $v_{a} \\in [0, 27]$ and $N_{a} \\in [24, 90]$ shows that the splitting monotonically increases with $v_{a}$. The spectroscopic study was supported by ab initi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.06830","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/2201.06830/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"}