Signature splitting in two quasiparticle rotational bands of 180,182Ta |
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Authors: | SUSHIL KUMAR SUKHJEET SINGH J K SHARMA A GOEL KAWALPREET KALRA |
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Abstract: | The signature splittings in Kπ = 1 +: 7 /2[404] π?9 /2[624] ν, Kπ = 0?: 9 /2[514] π?9 /2[624] ν bands of 180Ta and Kπ = 0?: 7 /2[404] π?7 /2[503] ν, Kπ = 1?: 5 /2[402] π?3 /2[512] ν, Kπ = 1+: 7 /2[404] π?9 /2[624] ν bands of 182Ta are analysed within the framework of two-quasiparticle rotor model. The phase as well as magnitude of the experimentally observed signature splitting in Kπ = 1+ band of 180Ta, which could not be explained in earlier calculations, is successfully reproduced. The conflict regarding placement of a 12 + level in Kπ = 1 +: 7 /2 +[404] π?9 /2 +[624] ν ground-state rotational band of 180Ta is resolved and tentative nature of Kπ = 0?: 7 /2[404] π?7 /2[503] ν, Kπ = 1+: 7 /2[404] π?9 /2[624] ν bands observed in 182Ta is confirmed. As a future prediction for experimentalists, these two-quasiparticle structures observed in 180Ta and 182Ta are extended to higher spins. |
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