Short-lived isomers in192Po and 194Po

B. Andel, A. N. Andreyev, S. Antalic, F. P. Heßberger, D. Ackermann, S. Hofmann, M. Huyse, Z. Kalaninová, B. Kindler, I. Kojouharov, P. Kuusiniemi, B. Lommel, K. Nishio, R. D. Page, B. Sulignano, P. Van Duppen

Research output: Contribution to journalArticlepeer-review


Isomeric states in Po194 and Po192 were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions Pr141(Fe56, p2n)Po194 and Sm144(V51, p2n)Po192. Several new γ-ray transitions were attributed to the isomers and γ−γ coincidences for both isomers were studied for the first time. The 459-keV transition earlier, tentatively proposed as de-exciting the isomeric level in Po194, was replaced by a new 248-keV transition, and the spin of this isomer was reassigned from (11−) to (10−). The de-excitation of the (11−) isomeric level in Po192 by the 154-keV transition was confirmed and a parallel de-excitation by a 733-keV (E3) transition to (8+) level of the ground-state band was suggested. Moreover, side feeding to the (4+) level of the ground-state band was proposed. The paper also discusses strengths of transitions de-exciting 11− isomers in neighboring Po and Pb isotopes.
Original languageEnglish
Article number64316
Number of pages12
JournalPhysical Review C
Issue number6
Publication statusPublished - 17 Jun 2016

Bibliographical note

© 2016, American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

Cite this