{"paper":{"title":"Nuclear Charge Radii of $^{10,11}$B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"physics.atom-ph","authors_text":"Alessandro Lovato, Bernhard Maa{\\ss}, Felix Sommer, Jan Krause, J\\\"org Kr\\\"amer, Kristian K\\\"onig, Krzysztof Pachucki, Mariusz Puchalski, Peter M\\\"uller, R. B. Wiringa, Robert Roth, Rodolfo S\\'anchez, Thomas H\\\"uther, Wilfried N\\\"ortersh\\\"auser","submitted_at":"2019-01-18T16:24:39Z","abstract_excerpt":"The first determination of the nuclear charge radius by laser spectroscopy for a five-electron system is reported. This is achieved by combining high-accuracy ab initio mass-shift calculations and a high-resolution measurement of the isotope shift in the $2s^2 2p\\, ^2\\mathrm{P}_{1/2} \\rightarrow 2s^2 3s\\, ^2\\mathrm{S}_{1/2}$ ground state transition in boron atoms. Accuracy is increased by orders of magnitude for the stable isotopes $^{10,11}$B and the results are used to extract their difference in the mean-square charge radius $\\langle r^2_\\mathrm{c}\\rangle^{11} - \\langle r^2_\\mathrm{c}\\rangl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06323","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"}