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Signature splitting in two quasiparticle rotational bands of 180,182Ta

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Abstract

The signature splittings in K π = 1 +: 7 /2[404] π ⊗9 /2[624] ν , K π = 0: 9 /2[514] π ⊗9 /2[624] ν bands of 180Ta and K π = 0: 7 /2[404] π ⊗7 /2[503] ν , K π = 1: 5 /2[402] π ⊗3 /2[512] ν , K π = 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 K π = 1+ band of 180Ta, which could not be explained in earlier calculations, is successfully reproduced. The conflict regarding placement of a 12 + level in K π = 1 +: 7 /2 +[404] π ⊗9 /2 +[624] ν ground-state rotational band of 180Ta is resolved and tentative nature of K π = 0: 7 /2[404] π ⊗7 /2[503] ν , K π = 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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Acknowledgements

The financial support from the Department of Science and Technology, Govt. of India and the International Atomic Energy Agency, Austria is gratefully acknowledged. The authors are very thankful to Prof. A K Jain, Department of Physics, Indian Institute of Technology, Roorkee, India, for his kind support.

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Correspondence to SUSHIL KUMAR.

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KUMAR, S., SINGH, S., SHARMA, J.K. et al. Signature splitting in two quasiparticle rotational bands of 180,182Ta. Pramana - J Phys 87, 14 (2016). https://doi.org/10.1007/s12043-016-1216-8

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  • DOI: https://doi.org/10.1007/s12043-016-1216-8

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