{"id":"W4409070970","doi":"10.3749/9780921294801.ch15","title":"CHAPTER 15: USE OF MULTIPLE CHANNELTRON ION COUNTERS FOR LA–MC–ICP–MS ANALYSIS OF COMMON LEAD ISOTOPES IN SILICATE GLASSES","year":2008,"lang":"en","type":"book-chapter","venue":"Mineralogical Association of Canada eBooks","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":0,"is_retracted":false,"has_abstract":false,"ca_institutions":"Memorial University of Newfoundland","funders":"","keywords":"Silicate glass; Silicate; Isotope; Geochemistry; Radiochemistry; Materials science; Environmental science; Mineralogy; Geology; Chemistry; Chemical engineering; Nuclear physics; Physics; Engineering","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002824405,0.0003026871,0.001327865,0.0002796507,0.00005306853,0.00001141209,0.0002373051,0.0003786108,0.000762189],"category_scores_gemma":[0.0003302401,0.0002306311,0.000508907,0.0001156738,0.0001534798,0.00004803083,0.00002539511,0.0002214471,0.00000104017],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00005568529,"about_ca_system_score_gemma":0.00008852833,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.3454957,"about_ca_topic_score_gemma":0.9206241,"domain_scores_codex":[0.997597,0.00006821333,0.0009655406,0.0003792733,0.0006696234,0.0003203727],"domain_scores_gemma":[0.9965598,0.001776889,0.00106339,0.0001883591,0.0003040852,0.0001074558],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0009287224,0.0002313095,0.9309242,0.0003031922,0.004748002,0.00004607378,0.0003388836,0.03906175,0.003437646,0.004695481,0.005765957,0.009518824],"study_design_scores_gemma":[0.002299786,0.001065568,0.7729014,0.0002536352,0.002971841,0.000002835102,0.00006388884,0.06692466,0.00285262,0.00753845,0.141445,0.001680325],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9379609,0.0002804466,0.00002941725,0.0006965864,0.00009409,0.0005271158,0.003697615,0.00001816659,0.05669571],"genre_scores_gemma":[0.9726506,0.00007039298,0.0001079353,0.0002087092,0.00003333181,0.000004831828,0.000968936,0.000005620036,0.02594966],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.5751284,"threshold_uncertainty_score":0.9404863,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02281709326193633,"score_gpt":0.1908315188737902,"score_spread":0.1680144256118539,"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."}}