Signature Inversion in the πh<SUB>9/2</SUB>×υi<SUB>13/2</SUB> Oblate Band of 188TL

MA Long; ZHOU Xiao-Hong; ZHANG Yu-Hu; GUO Ying-Xiang

Chinese Physics C> 2006, Vol. 30> Issue(5) : 402-404

Signature Inversion in the πh_9/2×υi_13/2 Oblate Band of 188TL

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan3 Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

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Abstract：
High-spin Level structure of ¹⁸⁸Tl has been studied via ¹⁵⁷Gd(³⁵Cl,4n) fusion-evaporation reaction at beam energy of 170MeV. A rotational band built on the πh_9/2×υi_13/2 configuration with oblate deformation has been established. Spin values have been proposed to the πh_9/2×υi_13/2 oblate band based on the similarities between the oblate band of ¹⁸⁸Tl and those in odd-odd ^190—200Tl. With the spin assignments, the low-spin signature inversion has been revealed for the πh_9/2×υi_13/2 oblate band of ¹⁸⁸Tl. The low-spin signature inversion can be interpreted qualitatively in the framework of the quasi-particles plus rotor model including a J dependent p-n residual interaction.

References

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MA Long, ZHOU Xiao-Hong, ZHANG Yu-Hu and GUO Ying-Xiang. Signature Inversion in the πh_9/2×υi_13/2 Oblate Band of 188TL[J]. Chinese Physics C, 2006, 30(5): 402-404.

MA Long, ZHOU Xiao-Hong, ZHANG Yu-Hu and GUO Ying-Xiang. Signature Inversion in the πh_9/2×υi_13/2 Oblate Band of 188TL[J]. Chinese Physics C, 2006, 30(5): 402-404. shu

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Received: 2005-09-30
Revised: 2005-10-13

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Signature Inversion in the πh_9/2×υi_13/2 Oblate Band of 188TL

Corresponding author: MA Long,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan3 Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

Received Date: 2005-09-30
Accepted Date: 2005-10-13
Available Online: 2006-05-05

Abstract: High-spin Level structure of ¹⁸⁸Tl has been studied via ¹⁵⁷Gd(³⁵Cl,4n) fusion-evaporation reaction at beam energy of 170MeV. A rotational band built on the πh_9/2×υi_13/2 configuration with oblate deformation has been established. Spin values have been proposed to the πh_9/2×υi_13/2 oblate band based on the similarities between the oblate band of ¹⁸⁸Tl and those in odd-odd ^190—200Tl. With the spin assignments, the low-spin signature inversion has been revealed for the πh_9/2×υi_13/2 oblate band of ¹⁸⁸Tl. The low-spin signature inversion can be interpreted qualitatively in the framework of the quasi-particles plus rotor model including a J dependent p-n residual interaction.