{"paper":{"title":"Evidence for coexisting shapes in $^{98}$Zr through lifetime measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Dewald, A. Dijon, A. G\\\"orgen, A. Gottardo, B. Bruyneel, B. Jacquot, B. Sulignano, Ch. Theisen, C. Louchart, C. Michelagnoli, C. M\\\"uller-Gatermann, D. R. Napoli, E. Cl\\'ement, E. Sahin, F. Farget, F. Recchia, G. de France, I. Celikovic, J.J. Valiente-Dobon, J. Libert, J. Litzinger, J. Ljungvall, J.-P. Delaroche, L. Grente, M.-D. Salsac, M. Girod, M. Hackstein, N. Pillet, O. Delaune, Purnima Singh, S. Siem, T. Braunroth, T. Otsuka, T. Togashi, T. W. Hagen, W. Korten, W. Rother, Y. Tsunoda","submitted_at":"2019-02-07T14:28:37Z","abstract_excerpt":"The lifetimes of first excited 2$^+$, 4$^+$ and 6$^+$ states in $^{98}$Zr were measured with the Recoil-Distance Doppler Shift method in an experiment performed at GANIL. Excited states in $^{98}$Zr were populated using the fission reaction between a 6.2 MeV/u $^{238}$U beam and a $^{9}$Be target. The $\\gamma$ rays were detected with the EXOGAM array in correlation with the fission fragments identified in mass and atomic number in the VAMOS++ spectrometer. Our result shows very small B(E2;2$_1^+$ $\\rightarrow$ 0$_1^+$) value in $^{98}$Zr thereby confirming the very sudden onset of collectivity"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.02637","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"}