{"paper":{"title":"Early onset of ground-state deformation in the neutron-deficient polonium isotopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A.E. Barzakh, A.M. Sjoedin, A.N. Andreyev, B.A. Marsh, B. Bastin, D.V. Fedorov, E. Mane, G. Huber, I.G. Darby, I. Stefan, J. Buscher, J. Van de Walle, K.T. Flanagan, M. Bender, M.D. Seliverstov, M. Huyse, M. Keupers, M. Venhart, P.-H. Heenen, P.L. Molkanov, P. Van Duppen, R.D. Page, S. Antalic, S. Franchoo, S. Fritzsche, S.G. Zemlyanoy, T.E. Cocolios, U. Koster, V.N. Fedosseyev, W. Dexters, Yu. Kudryavtsev","submitted_at":"2010-10-11T13:44:41Z","abstract_excerpt":"In-source resonant ionization laser spectroscopy of the even-$A$ polonium isotopes $^{192-210,216,218}$Po has been performed using the $6p^37s$ $^5S_2$ to $6p^37p$ $^5P_2$ ($\\lambda=843.38$ nm) transition in the polonium atom (Po-I) at the CERN ISOLDE facility. The comparison of the measured isotope shifts in $^{200-210}$Po with a previous data set allows to test for the first time recent large-scale atomic calculations that are essential to extract the changes in the mean-square charge radius of the atomic nucleus. When going to lighter masses, a surprisingly large and early departure from sp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.2103","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":""},"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"}