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Mapping out the Ba$^+$ loss rate dependence on the Rb atom density we can discern two-body reactive collisions from three-body ones and for the first time determine both rate coefficients which are $k_2=3.1(6)(6)\\times 10^{-13}\\textrm{cm}^{3}\\textrm{s}^{-1}$ and $k_3=1.04(4)(45)\\times 10^{-24}\\textrm{cm}^{6}\\textrm{s}^{-1}$, respectively (statistical and systematic errors in parenthesis). Thus, the measured ternary recombin"},"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":"1602.01381","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-02-03T17:31:26Z","cross_cats_sorted":[],"title_canon_sha256":"aa510d40a1b15ce96d89f318da568c610bb56158a5284e3fb5080697b6292d85","abstract_canon_sha256":"27f295ba701415e3ff89da3cafe979af8ddf161491d0cade58162ee1cea1cbbc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:45.405407Z","signature_b64":"D1gGo5OgMl7cNPGRMTiSvlq1gnkZFOOYq3xH5nNPKr5offJYmhJE3YmwUPRR2wgbPOqJOiR10W55ZYsSEgemAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2de482db416bfbfb9623c3913bdcce627c5b3de10f3f3c39b3c233c28e1bca91","last_reissued_at":"2026-05-18T01:04:45.404786Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:45.404786Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reactive two-body and three-body collisions of Ba$^+$ in an ultracold Rb gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Amir Mohammadi, Arne H\\\"arter, Artjom Kr\\\"ukow, Johannes Hecker Denschlag","submitted_at":"2016-02-03T17:31:26Z","abstract_excerpt":"We analyze reactive collisions of a single Ba$^+$ ion in contact with an ultracold gas of Rb atoms at low three-body collision energies of 2.2(9) mK$\\times k_{\\mathrm{B}}$. 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