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Andel, B.*; Andreyev, A. N.; Antalic, S.*; Heberger, F. P.*; Ackermann, D.*; Hofmann, S.*; Huyse, M.*; Kalaninov
, Z.*; Kindler, B.*; Kojouharov, I.*; et al.
Physical Review C, 93(6), p.064316_1 - 064316_12, 2016/06
被引用回数:5 パーセンタイル:38.91(Physics, Nuclear)Isomeric states in Po and
Po were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions
Pr(
Fe,
)
Po and
Sm(
V,
)
Po. Several new
-ray transitions were attributed to the isomers and
-
coincidences for both isomers were studied for the first time. The 459-keV transition earlier, tentatively proposed as de-exciting the isomeric level in
Po, 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
Po 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.