{"id":"W1999831736","doi":"10.1118/1.3260839","title":"Optimizing non‐Pb radiation shielding materials using bilayers","year":2009,"lang":"en","type":"article","venue":"Medical Physics","topic":"Radiation Shielding Materials Analysis","field":"Materials Science","cited_by":106,"is_retracted":false,"has_abstract":true,"ca_institutions":"National Research Council Canada","funders":"","keywords":"Attenuation; Materials science; Electromagnetic shielding; Kerma; Fluence; Optics; Attenuation coefficient; Absorption (acoustics); Bilayer; Dosimetry; Composite material; Physics; Chemistry; Laser; Nuclear medicine","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.001057369,0.0002073986,0.0004194714,0.00008216795,0.0002217103,0.0002732998,0.000359739,0.00016942,0.001851885],"category_scores_gemma":[0.0003136933,0.0001902366,0.00009003765,0.0003412089,0.00007154394,0.0004570779,0.00005318769,0.0001130771,0.000201659],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001201935,"about_ca_system_score_gemma":0.000117626,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00008962159,"about_ca_topic_score_gemma":0.000001158569,"domain_scores_codex":[0.9977039,0.0001191511,0.0005359021,0.0003903355,0.000832026,0.0004186833],"domain_scores_gemma":[0.9990198,0.00009884361,0.0002680089,0.0003288746,0.00005992725,0.0002245479],"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":[0.00001346108,0.00004560324,0.00003404685,0.0000137393,0.000009706246,0.00000988534,0.0003279161,0.002682433,0.9919514,0.0002505201,0.000267816,0.004393457],"study_design_scores_gemma":[0.0003282005,0.00003696864,0.0002017924,0.00006224353,0.00005028201,0.00000431706,0.0000268918,0.004417005,0.9931905,0.001275301,0.0001617017,0.0002448148],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.8925189,0.00003557817,0.1052513,0.0006652373,0.0009190841,0.0001240327,0.000009633815,0.0001327106,0.0003435125],"genre_scores_gemma":[0.9927028,0.00002995402,0.004624911,0.001229969,0.001345888,0.000005288045,0.00001895221,0.00002204308,0.00002014104],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1006263,"threshold_uncertainty_score":0.9990606,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02284404245134547,"score_gpt":0.2896190749463579,"score_spread":0.2667750324950124,"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."}}