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期刊论文
Properties of the πi13/2⊗vi13/2 band in odd-odd 184Au
PHYSICAL REVIEW C 70, 057303 (2004)，-0001，（）：
High-spin level structure in 184Au has been reinvestigated using the multidetector array of GASP via the 159Tbs29Si,4n gd184Au reaction at a beam energy of 140 MeV. The ground-state band and the excited πi13/2⊗vi13/2 2-qp band have been extended up to lower and higher spin states. An upbend has been observed in the excited band at hω～0.25 MeV and is interpreted as resulting from a pair of πh9/2 alignment. This lowfrequency (πh9/2)2 alignment is supported by the measured B(M1)/B(E2) ratios and alignment properties in neighboring odd-A nuclei. The linking transitions between the two bands and to the ground state have been established leading to a firm spin-and-parity assignment for the πi13/2⊗vi13/2 band in 184Au. This result provides strong evidence for the low-spin signature inversion in the πi13/2⊗vi13/2 bands of odd-odd nuclei in the A,180 mass region.
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