{"paper":{"title":"Fluorescence and Relaxation Dynamics of Cesium in Argon Matrices: Multiple Trapping Sites and Host-Guest Interactions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Cesium atoms in argon matrices occupy two main trapping sites that produce distinct fluorescence and relaxation dynamics for their excited states.","cross_cats":["physics.atm-clus","physics.chem-ph"],"primary_cat":"physics.atom-ph","authors_text":"B. Gervais, C. Crepin, D. Comparat, H. Dinesan, J. Douady, L. Dontot, S. Lahs, S. Mahapatra, W. Chin","submitted_at":"2026-05-15T10:54:44Z","abstract_excerpt":"We investigate the fluorescence and relaxation dynamics of Cs atoms embedded in a cryogenic argon matrix using spectroscopy measurements combined with diatomic-in-molecule (DIM) simulations. The data reveal complex emission spectra, large Stokes shifts, and slow relaxation effects, indicating strong host-guest interactions and substantial lattice reorganization. Although the spectra are superimposed on a broad background, possibly due to low-symmetry, defect-related, or grain-boundary trapping sites, the main spectral structure is consistent with two dominant trapping environments that give ri"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"The main spectral structure is consistent with two dominant trapping environments that give rise to two triplet absorption features with distinct fluorescence behavior of the doublet and singlet components.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the observed main spectral features arise specifically from two dominant trapping sites rather than a continuum of sites or other effects, and that the DIM simulations correctly capture the host-guest interactions and lattice reorganization without significant model error.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Spectroscopy and DIM simulations of Cs in Ar matrices indicate two dominant trapping sites with large Stokes shifts, slow relaxation, and distinct doublet/singlet fluorescence behaviors.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Cesium atoms in argon matrices occupy two main trapping sites that produce distinct fluorescence and relaxation dynamics for their excited states.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"a9eadccb7e91bec1b37b0d626b1789ad60dca26dd313ecb7ddec66a766c8827c"},"source":{"id":"2605.15840","kind":"arxiv","version":1},"verdict":{"id":"987020ad-ac0a-42d9-8cf8-e885a104f105","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T18:30:15.862634Z","strongest_claim":"The main spectral structure is consistent with two dominant trapping environments that give rise to two triplet absorption features with distinct fluorescence behavior of the doublet and singlet components.","one_line_summary":"Spectroscopy and DIM simulations of Cs in Ar matrices indicate two dominant trapping sites with large Stokes shifts, slow relaxation, and distinct doublet/singlet fluorescence behaviors.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the observed main spectral features arise specifically from two dominant trapping sites rather than a continuum of sites or other effects, and that the DIM simulations correctly capture the host-guest interactions and lattice reorganization without significant model error.","pith_extraction_headline":"Cesium atoms in argon matrices occupy two main trapping sites that produce distinct fluorescence and relaxation dynamics for their excited states."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.15840/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T19:01:19.003412Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T18:41:13.892693Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T17:33:48.714270Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T17:21:55.844810Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"91077b41610021326a1242d4f6697cda0357da7505132675914d872b247c6fd2"},"references":{"count":35,"sample":[{"doi":"","year":null,"title":"Furthermore, as mentioned before, we exper- imentally observe a large background in the absorption spectrum that could indicate a crystal with numerous defects","work_id":"bd791d7e-0f72-47e9-b34e-c99de1bde6e9","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"As for the crystalline sites, the spectrum results from the complex superposition of all the spectra associated to each individual site, but we can no longer associate a series of 2 or 3 peaks to a sp","work_id":"56f94d35-d923-410a-bb82-f608cf565d58","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1981,"title":"A. Barnes, W. Orville-Thomas, A. M¨ uller, and R. Gaufr` es,Matrix isolation spectroscopy(Springer Dor- drecht, 1981)","work_id":"3e87f2d8-3542-4bf9-a59c-d64d4ceeaadf","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1989,"title":"M. Almond and A. Downs,Spectroscopy of Matrix Iso- lated Species(Wiley, Chichester, 1989)","work_id":"57f0876f-cf43-40f1-9acb-f3e7d8530f6a","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1996,"title":"V. E. Bondybey, A. M. Smith, and J. Agreiter, Chemical reviews96, 2113 (1996)","work_id":"62139a46-0613-4149-98b7-a624a5c56484","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":35,"snapshot_sha256":"90da9bbc25ba61366e82ed9864e27466d04f8900844a11a6c583c9a7c141c2b8","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"98743d3430d715f891611426b2828a5ad671d746441879d9687516773db0934a"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}