{"paper":{"title":"Masses of neutron-rich $^{\\operatorname{52-54}}$Sc and $^{54,56}$Ti nuclides: The $N=32$ subshell closure in scandium","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Ozawa, A. Schwenk, B. H. Sun, C. Y. Fu, D. W. Liu, F. R. Xu, G. Audi, G. Q. Xiao, H. S. Xu, H. W. Zhao, J. D. Holt, J. Simonis, K. Blaum, M. Wang, P. Shuai, Q. Zeng, R. J. Chen, R. S. Mao, S. Litvinov, S. R. Stroberg, T. C. Zhao, T. Uesaka, T. Yamaguchi, W. J. Huang, W. L. Zhan, W. Zhang, X. C. Chen, X. H. Zhou, X. L. Tu, X. L. Yan, X. W. Ma, X. Xu, Y. H. Lam, Y. H. Zhang, Y. M. Xing, Y. Sun, Yu. A. Litvinov, Y. Yamaguchi, Z. Ge","submitted_at":"2019-05-29T16:47:58Z","abstract_excerpt":"Isochronous mass spectrometry has been applied in the storage ring CSRe to measure the masses of the neutron-rich $^{\\operatorname{52-54}}$Sc and $^{54,56}$Ti nuclei. The new mass excess values $ME$($^{52}$Sc) $=$ $-40525(65)$ keV, $ME$($^{53}$Sc) $=$ $-38910(80)$ keV, and $ME$($^{54}$Sc) $=$ $-34485(360)$ keV, deviate from the Atomic Mass Evaluation 2012 by 2.3$\\sigma$, 2.8$\\sigma$, and 1.7$\\sigma$, respectively. These large deviations significantly change the systematics of the two-neutron separation energies of scandium isotopes. The empirical shell gap extracted from our new experimental r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.12577","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"}