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Hyperfine constants A = 84.7189(22) MHz, B = 12.4942(43) MHz, and C = -0.12(09) kHz are obtained from the published measurements. The existence of a significant value for C indicates the presence of a nuclear magnetic octupole moment Omega. Combining the hyperfine constants with atomic structure calculations, we obtain Omega = -0.58(39) (b muN). Second-order corrections arising from interaction with the nearby 5p 2P[1/2] state are found to be i"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0810.5745","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2008-10-31T18:10:22Z","cross_cats_sorted":[],"title_canon_sha256":"b546c796aa985faf16dfa3514e78c1f227ae498cfa8f005a33c420114f93df26","abstract_canon_sha256":"f1349684defb91471166524613a43c950fc8c1a3de94291a54bcca4784074979"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:22.705983Z","signature_b64":"O+/VAIXX+HbJyi5d3Q/n4AGt/Lie+9CNrTn+IIEaJVmyPI4C4kqlkk076W+NsBQXVevLbVDqjoOf6w7iMeyRBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27f2f981fca878857466885fea55b7ea62d7be8a117dc57e4c364d4e010d79e5","last_reissued_at":"2026-05-18T02:15:22.705236Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:22.705236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of the Nuclear Magnetic Octupole Moment of 87Rb from Spectroscopic Measurements of Hyperfine Intervals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Carol E. Tanner, Vladislav Gerginov, W. R. Johnson","submitted_at":"2008-10-31T18:10:22Z","abstract_excerpt":"The magnetic octupole moment of 87Rb is determined from hyperfine intervals in the 5p 2P[3/2] state measured by Ye et al. [Opt. Lett. 21, 1280 (1996)]. Hyperfine constants A = 84.7189(22) MHz, B = 12.4942(43) MHz, and C = -0.12(09) kHz are obtained from the published measurements. The existence of a significant value for C indicates the presence of a nuclear magnetic octupole moment Omega. Combining the hyperfine constants with atomic structure calculations, we obtain Omega = -0.58(39) (b muN). 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