{"id":"W2008260548","doi":"10.1016/j.jmr.2006.01.007","title":"A simple proof that third-order quadrupole perturbations of the NMR central transition of half-integral spin nuclei are zero","year":2006,"lang":"en","type":"article","venue":"Journal of Magnetic Resonance","topic":"Advanced NMR Techniques and Applications","field":"Chemistry","cited_by":25,"is_retracted":false,"has_abstract":false,"ca_institutions":"McMaster University","funders":"","keywords":"Quadrupole; Simple (philosophy); Zero (linguistics); Spin (aerodynamics); Order (exchange); Zero order; Physics; Chemistry; Computational chemistry; Condensed matter physics; Mathematics; Atomic physics; First order; Thermodynamics; Applied mathematics","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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.000467782,0.001027188,0.0003452033,0.0006568077,0.0007358031,0.0005828261,0.0007026782,0.0007543414,0.01307136],"category_scores_gemma":[0.002006422,0.0002602604,0.0005163801,0.0002772556,0.002076685,0.001806798,0.001567521,0.001695911,0.002937853],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003588343,"about_ca_system_score_gemma":0.0005666348,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0008610139,"about_ca_topic_score_gemma":0.000906276,"domain_scores_codex":[0.9997491,0.00002002444,0.00001101474,0.00009791776,0.00007992813,0.00004198798],"domain_scores_gemma":[0.9995116,0.0001472164,0.00006470425,0.00009124614,0.0001266929,0.00005863342],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.00008069548,0.00004759081,0.0004437105,0.0001664408,0.00001858472,0.0004454122,0.0002961951,0.0009752716,0.05492479,0.9093064,0.008195101,0.02509986],"study_design_scores_gemma":[0.00004819292,0.00008350673,0.003081763,0.00006814645,0.0000331916,0.002064548,0.0001810009,0.01291153,0.06601093,0.8746292,0.04080457,0.00008340931],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.06804804,0.001137703,0.7575622,0.004554952,0.002026424,0.0001160514,0.0006172384,0.00159259,0.1643448],"genre_scores_gemma":[0.7707983,0.001513025,0.1592374,0.003669074,0.0007480846,0.0001757734,0.0005360819,0.0008927902,0.06242949],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.01307136,"threshold_uncertainty_score":0.04372805,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01027627931811114,"score_gpt":0.2476158901469646,"score_spread":0.2373396108288534,"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."}}