Excited states of 127Xe were populated in the 122Sn(9Be, 4nγ) fusion-evaporation reaction at a beam energy of 48 MeV. A sequence of ΔI = 2 γ-transitions has been observed above the Iπ = 19/2+ state at 2307 keV. Spin and parity of the states belonging to this band have been assigned firmly. The dynamic moment of inertia of this band is found to be low and almost constant as a function of angular momentum. Observed experimental features along with the results of theoretical semiclassical model calculation suggest an antimagnetic rotational character for this band.
In Table I, the multipolarity of the 172.5-keV γ transition should be E3 instead of E1. J π = 9/2 − was adopted for the 297.3-keV level from Refs. [1,2]. In the Conclusion section of the article, the spin of the 2730.3-keV isomeric state should be 23/2 instead of 21/2. These typographical errors do not affect the results and conclusion of the original article.
The excited level structures of 202 Tl and 203 Pb, above the 7 + and 29/2 − isomers, respectively, have been studied. An isomer with I π = 20 + and T 1/2 = 215(10) μs has been established in 202 Tl, and the level scheme extended from I = 10 to 20 h with the placement of fifteen new transitions. In 203 Pb, the I π = 37/2 + state is established to be metastable, with T 1/2 = 2.5(3) ns. Levels in both nuclei arise from intrinsic excitations, with likely particle-hole character for the higher-lying states in 203 Pb. The 20 + isomer in 202 Tl is most likely associated with a π h −1 11/2 ⊗ ν(i −2 13/2 , f −1 5/2 ) configuration, while the 37/2 + state in 203 Pb results from the excitation of five neutrons. Calculations, using both an empirical approach and the OXBASH code, have been performed to aid in the description of the excited level structure.
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