{"id":"W4416176705","doi":"10.48550/arxiv.2508.06733","title":"Laser Resonance Ionization Spectroscopy of Thorium","year":2025,"lang":"en","type":"preprint","venue":"ArXiv.org","topic":"Atomic and Molecular Physics","field":"Physics and Astronomy","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Rydberg formula; Ionization; Spectroscopy; Rydberg state; Thorium; Laser; Metastability; Hydrogen spectral series","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003472008,0.0002402323,0.0001845222,0.0004817503,0.0004733505,0.0002930849,0.0005680039,0.0004059548,0.002841888],"category_scores_gemma":[0.0004638872,0.0001538769,0.0001729824,0.0003607762,0.0004017879,0.0004089672,0.0004961347,0.0005682608,0.0004586553],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0005147353,"about_ca_system_score_gemma":0.0003064075,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001565275,"about_ca_topic_score_gemma":0.001661148,"domain_scores_codex":[0.9997573,0.00003058803,0.000005240196,0.00007849549,0.0000780739,0.00005025191],"domain_scores_gemma":[0.999732,0.0001060544,0.00005982568,0.00003908231,0.00004621516,0.00001682908],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0001532593,0.00003283338,0.002384321,0.0001011031,0.000018893,0.0001222241,0.0002785583,0.0008077747,0.9806578,0.003899689,0.0004810314,0.01106256],"study_design_scores_gemma":[0.00002483385,0.0001786921,0.006363787,0.00001271107,0.00001475035,0.000359073,0.0001012698,0.007106522,0.9812002,0.0005559022,0.00405682,0.00002556371],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9808477,0.000845252,0.009527367,0.000101682,0.00002041426,0.00001451709,0.0002636578,0.0002375457,0.008141809],"genre_scores_gemma":[0.9896191,0.0003910316,0.005898317,0.00005263119,0.000008996582,0.00001432761,0.0001979839,0.00003564351,0.00378211],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002841888,"threshold_uncertainty_score":0.00950706,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01412487352679363,"score_gpt":0.2684719466665044,"score_spread":0.2543470731397108,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}