{"paper":{"title":"Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. B. Hayes, A. Bracco, A. D. Ayangeakaa, A. Gade, A. Ionescu, A. M. Forney, A. Mitu, A. Negret, A. Ol\\u{a}cel, A. Oprea, A. Turturica, B. Fornal, C. Clisu, C. Costache, C. M. Campbell, C. Michelagnoli, C. Mihai, C. Petrone, C. Porzio, C. R. Ni\\c{t}\\u{a}, C. Sotty, C. Y. Wu, D. Cline, D. Filipescu, D. Little, D. Rhodes, D. Schumann, D. Seweryniak, E. A. Maugeri, F. C. L. Crespi, F. G. Kondev, F. Kandzia, G. Korschinek, H. L. Crawford, I. E. Dinescu, I. Gheorghe, I. Harca, J. Henderson, J. Li, J. Wu, K. Auranen, Krishichayan, L. Stan, {\\L}.W. Iskra, M. Barani, M. Boromiza, M. Ciema{\\l}a, M. Jentschel, M. Krzysiek, M. P. Carpenter, M. Sferrazza, N. Cieplicka-Orynczak, N. Florea, N. M\\u{a}rginean, P. C. Bender, P. Chowdhury, P. Mutti, R. \\c{S}uv\\u{a}il\\u{a}, R. E. Mihai, R. Lica, R. M\\u{a}rginean, R. V. F. Janssens, S. Bottoni, S. C\\u{a}linescu, S. Fracassetti, S. Leoni, S. M. Stolze, S. Pascu, S. Toma, S. Ujeniuc, S. Zhu, S. Ziliani, T. Lauritsen, T. Otsuka, U. K\\\"oster, W. B. Walters, Y. H. Kim, Y. Tsunoda","submitted_at":"2020-08-11T17:02:30Z","abstract_excerpt":"The low-spin structure of the semimagic 64Ni nucleus has been considerably expanded: combining four experiments, several 0+ and 2+ excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0+ excitation is located at a surprisingly high energy (3463 keV), with a collective 2+ state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N = 40 subshell gap highli"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.04857","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/2008.04857/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"}