Abstract
Abstract Low-lying excited states of 124,126 Xe and 132 Ba have been studied by means of in-beam γ-ray spectroscopy in (p, x n y ) reactions. Excitation functions, angular distributions and γ-γ coincidence spectra were obtained. The 2 2 + , 3 + , 4 2 + and 5 + levels were observed at the following excitation energies in keV: 846.4(2 2 + ), 1247.5(3 + ), 1437.3 (4 2 + ), 1836.6(5 + ) in 124 Xe, 879.7(2 2 + ), 1317.3(3 + ), 1488.2(4 2 + ), 1903.1(5 + ) in 126 Xe and 1032.1(2 2 + ), 1511.3(3 + ), 1729.9(4 2 + ) in 132 Ba. The 2214.3 and 2561.7 keV levels in 126 Xe were tentatively assigned as the 6 2 + and 7 + levels, respectively. These 2 2 + , 3 + , 4 2 + , 5 + , 6 2 + and 7 + levels are interpreted as members of a quasi-γ band. The E2/M1 mixing ratios of the 2 2 + → 2 1 + transitions in 124,126 Xe and 132 Ba were obtained as + 6.3 +5.3 −2.0 + 10.8 7.8 −3.2 and + 8.3 +4.9 −2.2 , respectively.
Published Version
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