First observation of isomeric states in Zr 111, Nb 113, and Mo 115

J. Wu, S. Nishimura, P. A. Söderström, A. Algora, J. J. Liu, V. H. Phong, Y. Q. Wu, F. R. Xu, J. Agramunt, D. S. Ahn, T. A. Berry, C. G. Bruno, J. J. Bundgaard, R. Caballero-Folch, A. C. Dai, T. Davinson, I. Dillmann, A. Estrade, A. Fijałkowska, N. FukudaS. Go, R. K. Grzywacz, T. Isobe, S. Kubono, G. Lorusso, K. Matsui, A. I. Morales, N. Nepal, S. E.A. Orrigo, B. C. Rasco, K. P. Rykaczewski, H. Sakurai, Y. Shimizu, D. W. Stracener, T. Sumikama, H. Suzuki, J. L. Tain, H. Takeda, A. Tarifeño-Saldivia, A. Tolosa-Delgado, M. Wolińska-Cichocka, R. Yokoyama

Research output: Contribution to journalArticlepeer-review

Abstract

Isomeric states in the neutron-rich nuclei Zr111 [T1/2=0.10(7)μs], Nb113 [T1/2=0.7(4)μs], Mo115 [T1/2=46(3)μs] were first identified at the Radioactive Ion Beam Factory (RIBF) of RIKEN by using in-flight fission and fragmentation of a U238 beam at an energy of 345 MeV/u. This is a brief report of the γ transitions de-exciting from isomeric states and half-lives measurements, which provides the first spectroscopy in the nuclear region of prolate-to-oblate shape-phase transition around mass A ≈110.

Original languageEnglish
Article number064328
JournalPhysical Review C
Volume106
Issue number6
DOIs
StatePublished - Dec 2022

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