{"paper":{"title":"Adiabatic Fast Passage Spin Manipulation Measurements in Solid Polarized Targets","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Adiabatic fast passage reverses polarization rapidly in solid targets while a new lineshape analysis extracts vector and tensor components from non-Boltzmann NMR spectra.","cross_cats":["nucl-ex"],"primary_cat":"physics.atom-ph","authors_text":"D. Keller, K. Nakano, M.F. Hossain, N.G. Vismith","submitted_at":"2026-03-23T02:11:48Z","abstract_excerpt":"Adiabatic fast passage (AFP) is a rapid method for reversing nuclear polarization and manipulating spin populations in polarized solid targets, avoiding the long repolarization times associated with dynamic nuclear polarization (DNP). We report AFP measurements in a 5~T, 1~K polarized-target system for irradiated $^{15}$NH$_3$, irradiated $^{14}$ND$_3$, and butanol-based materials prepared either with TEMPO doping or by irradiation. We also present a joint manipulated-lineshape analysis for spin-1 targets and demonstrate that vector and tensor polarizations can be extracted from AFP-manipulate"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"The main advances are threefold: (i) new measurements of AFP efficiency in irradiated 15NH3, irradiated 14ND3, and butanol systems; (ii) a joint manipulated-lineshape analysis that extracts vector and tensor polarization components from AFP-manipulated NMR spectra including non-Boltzmann half-flip states; (iii) an efficiency study of irradiated 15NH3 showing strong dependence on initial polarization.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The joint manipulated-lineshape analysis correctly extracts vector and tensor components without post-hoc adjustments or unaccounted systematic effects in the NMR spectra of non-Boltzmann states.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"AFP achieves high-efficiency spin flips in polarized targets with initial-polarization dependence, and a new joint lineshape analysis extracts vector and tensor components from non-Boltzmann NMR spectra.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Adiabatic fast passage reverses polarization rapidly in solid targets while a new lineshape analysis extracts vector and tensor components from non-Boltzmann NMR spectra.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"271c0a536deadd3bb568f6471d1dac9880ffe06ff426258157f384116811f036"},"source":{"id":"2604.02365","kind":"arxiv","version":2},"verdict":{"id":"8d8b1bd8-b200-478f-a0e8-74a8278ab31d","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T01:21:44.960581Z","strongest_claim":"The main advances are threefold: (i) new measurements of AFP efficiency in irradiated 15NH3, irradiated 14ND3, and butanol systems; (ii) a joint manipulated-lineshape analysis that extracts vector and tensor polarization components from AFP-manipulated NMR spectra including non-Boltzmann half-flip states; (iii) an efficiency study of irradiated 15NH3 showing strong dependence on initial polarization.","one_line_summary":"AFP achieves high-efficiency spin flips in polarized targets with initial-polarization dependence, and a new joint lineshape analysis extracts vector and tensor components from non-Boltzmann NMR spectra.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The joint manipulated-lineshape analysis correctly extracts vector and tensor components without post-hoc adjustments or unaccounted systematic effects in the NMR spectra of non-Boltzmann states.","pith_extraction_headline":"Adiabatic fast passage reverses polarization rapidly in solid targets while a new lineshape analysis extracts vector and tensor components from non-Boltzmann NMR spectra."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.02365/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}