{"paper":{"title":"Isochronous mass measurements of $T_z=-1$ $fp$-shell nuclei from projectile fragmentation of $^{58}$Ni","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Ozawa, B. H. Sun, C. Y. Fu, D. W. Liu, F. R. Xu, G. Audi, H. Chen, H. S. Xu, J. J. He, K. Blaum, M. Wang, M. Z. Sun, P. Shuai, P. Zhang, Q. Zeng, R. J. Chen, R. S. Mao, S. Kubono, S. Litvinov, T. Bao, T. Uesaka, T. Yamaguchi, W. L. Zhan, X. C. Chen, X. H. Zhou, X. L. Tu, X. L. Yan, X. W. Ma, X. Xu, X. Zhou, Y. H. Lam, Y. H. Zhang, Y. M. Xing, Y. Sun, Yu. A. Litvinov, Y. Yamaguchi","submitted_at":"2018-11-22T10:01:46Z","abstract_excerpt":"Atomic masses of seven $T_z=-1$, $fp$-shell nuclei from $^{44}$V to $^{56}$Cu and two low-lying isomers, $^{44m}$V ($J^\\pi=6^+$) and $^{52m}$Co ($J^\\pi=2^+$), have been measured with relative precisions of $1-4\\times 10^{-7}$ with Isochronous Mass Spectrometry (IMS) at CSRe. The masses of $^{56}$Cu, $^{52g,52m}$Co, and $^{44m}$V were measured for the first time in this experiment. The Mass Excesses ($ME^{\\prime}$s) of $^{44}$V, $^{48}$Mn, $^{50}$Fe, and $^{54}$Ni are determined with an order of magnitude improved precision compared to the literature values. $^{52g,52m}$Co and $^{56}$Cu are fou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.09079","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"}