Search for Signature Inversion in the πi13/2⊙νi13/2 Bands in 182,184,186Au

ZHANG Yu-Hu; ZHOU Xiao-Hong; HE Jian-Jun; LIU Zhong; FANG Yong-De; GUO Wen-Tao; LEI Xiang-Guo; GUO Ying-Xiang; MA Long; Moyo Ndontchueng

Chinese Physics C> 2006, Vol. 30> Issue(S2) : 208-210

Search for Signature Inversion in the πi_13/2⊙νi_13/2 Bands in ^182,184,186Au

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan3 Department of Physics, Kyushu University, Fukuoka, 812-81, Japan4 Chiba Institute of Technology, Narashino, China 275-0023, Japan5 Chiba University, Inage-ku, Chiba 263-8512, Japan6 Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy7 Department of Technical Physics, Peking University, Beijing 100871, China

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Abstract：
Search for low-spin signature inversion in the πi_13/2⊙νi_13/2 bands in odd-odd ^182,184,186Au has been conducted through the standard in-beam γ-spectroscopy techniques via the ¹⁵²Sm(³⁵Cl,5n)¹⁸²Au, ¹⁷²Yb(¹⁹F,5n)¹⁸⁶Au, and ¹⁵⁹Tb(²⁹Si,4n)¹⁸⁴Au reactions, respectively. The πi_13/2⊙νi_13/2 bands in these three nuclei have been identified and extended up to high-spin states. In particular, the inter-band connection between the πi_13/2⊙νi_13/2 band and the ground-state band in ¹⁸⁴Au has been established, leading to a firm spin-and-parity assignment for the πi_13/2⊙νi_13/2 band. The low-spin signature inversion is found in the πi_13/2⊙νi_13/2 bands according to our spin-assignment and the signature crossing observed at high-spin states.

References

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ZHANG Yu-Hu, ZHOU Xiao-Hong, HE Jian-Jun, LIU Zhong, FANG Yong-De, GUO Wen-Tao, LEI Xiang-Guo, GUO Ying-Xiang, MA Long and Moyo Ndontchueng. Search for Signature Inversion in the πi_13/2⊙νi_13/2 Bands in ^182,184,186Au[J]. Chinese Physics C, 2006, 30(S2): 208-210.

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Received: 2006-10-18
Revised: 1900-01-01

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通讯作者: 陈斌, [email protected]

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沈阳化工大学材料科学与工程学院沈阳 110142

Search for Signature Inversion in the πi_13/2⊙νi_13/2 Bands in ^182,184,186Au

Corresponding author: ZHANG Yu-Hu,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan3 Department of Physics, Kyushu University, Fukuoka, 812-81, Japan4 Chiba Institute of Technology, Narashino, China 275-0023, Japan5 Chiba University, Inage-ku, Chiba 263-8512, Japan6 Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy7 Department of Technical Physics, Peking University, Beijing 100871, China

Received Date: 2006-10-18

Accepted Date: 1900-01-01

Available Online: 2006-01-03

Abstract: Search for low-spin signature inversion in the πi_13/2⊙νi_13/2 bands in odd-odd ^182,184,186Au has been conducted through the standard in-beam γ-spectroscopy techniques via the ¹⁵²Sm(³⁵Cl,5n)¹⁸²Au, ¹⁷²Yb(¹⁹F,5n)¹⁸⁶Au, and ¹⁵⁹Tb(²⁹Si,4n)¹⁸⁴Au reactions, respectively. The πi_13/2⊙νi_13/2 bands in these three nuclei have been identified and extended up to high-spin states. In particular, the inter-band connection between the πi_13/2⊙νi_13/2 band and the ground-state band in ¹⁸⁴Au has been established, leading to a firm spin-and-parity assignment for the πi_13/2⊙νi_13/2 band. The low-spin signature inversion is found in the πi_13/2⊙νi_13/2 bands according to our spin-assignment and the signature crossing observed at high-spin states.

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Search for Signature Inversion in the πi_13/2⊙νi_13/2 Bands in ^182,184,186Au

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