Short-lived isomers in Po-192 and Po-194

Andel, B, Andreyev, AN, Antalic, S, Hessberger, FP, Ackermann, D, Hofmann, S, Huyse, M, Kalaninova, Z, Kindler, B, Kojouharov, I
et al (show 6 more authors) (2016) Short-lived isomers in Po-192 and Po-194. PHYSICAL REVIEW C, 93 (6).

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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.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 23 Jan 2020 11:30
Last Modified: 19 Jan 2023 00:08
DOI: 10.1103/PhysRevC.93.064316
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