{"paper":{"title":"Excited-state magnetic properties of carbon-like $\\text{Ca}^{14+}$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Alexander Wilzewski, Andrey I. Bondarev, Andrey Surzhykov, Charles Cheung, Erik Benkler, Jan Gilles, Jos\\'e R. Crespo L\\'opez-Urrutia, Lukas J. Spie{\\ss}, Malte Wehrheim, Marianna S. Safronova, Martin Steinel, Melina Filzinger, Nils Huntemann, Piet O. Schmidt, Sergey G. Porsev, Shuying Chen","submitted_at":"2025-02-26T08:28:09Z","abstract_excerpt":"We measured the $g$-factor of the excited state $^3\\text{P}_1$ in $\\text{Ca}^{14+}$ ion to be $g = 1.499032(6)$ with a relative uncertainty of $4\\times10^{-6}$. The magnetic field magnitude is derived from the Zeeman splitting of a $\\text{Be}^+$ ion, co-trapped in the same linear Paul trap as the highly charged $\\text{Ca}^{14+}$ ion. Furthermore, we experimentally determined the second-order Zeeman coefficient $C_2$ of the $^3\\text{P}_0$ - $^3\\text{P}_1$ clock transition. For the $m_J=0\\rightarrow m_{J'}=0$ transition, we obtain $C_2 = 0.39\\pm0.04\\text{HzmT}^{-2}$, which is to our knowledge th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.18926","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.18926/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"}