Multi-quasiparticle Excitations in <SUP>145</SUP>Tb

ZHENG Yong; ZHOU Xiao-Hong; ZHANG Yu-Hu; LIU Min-Liang; GUO Ying-Xiang; LEI Xiang-Guo

Chinese Physics C> 2004, Vol. 28> Issue(S1) : 50-52

Multi-quasiparticle Excitations in ¹⁴⁵Tb

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan3 Chiba University, Inage-ku, Chiba 263--8512, Japan4 Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

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Abstract：
High-spin states in ¹⁴⁵Tb have been populated using the ¹¹⁸Sn(³²S, 1p4n) reaction at a beam energy of 165MeV. The level scheme of ¹⁴⁵Tb has been established for the first time. The level scheme shows characteristics of spherical or slightly oblate nucleus. Based on the systematic trends of the level structure in the neighboring N=80 isotones, the level structure in ¹⁴⁵Tb below 2MeV excitation is well explained by coupling an h_11/2 valence proton to the even-even ¹⁴⁴Gd core. Above 2MeV excitation, most of the yrast levels are interpreted with multi-quasiparticle shell-model configurations.

References

[1]

. ZHOU Xiao-Hong et al. Eur. Phys. J., 2001, A12: 253-255.2.Lach M et al. Z Phys., 1984, A319: 235-2363.Piel W F et al. Phys. Rev., 1985, C31: 2087-21034.Chapuran T et al. Phys. Rev., 1986, C33: 130-1425.Lonnroth T et al. Phys. Rev., 1986, C33: 1641-16486.Blomqvist J et al. Z. Phys., 1983, A312: 27-41

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ZHENG Yong, ZHOU Xiao-Hong, ZHANG Yu-Hu, LIU Min-Liang, GUO Ying-Xiang and LEI Xiang-Guo. Multi-quasiparticle Excitations in ¹⁴⁵Tb[J]. Chinese Physics C, 2004, 28(S1): 50-52.

ZHENG Yong, ZHOU Xiao-Hong, ZHANG Yu-Hu, LIU Min-Liang, GUO Ying-Xiang and LEI Xiang-Guo. Multi-quasiparticle Excitations in ¹⁴⁵Tb[J]. Chinese Physics C, 2004, 28(S1): 50-52. shu

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Received: 2004-12-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Multi-quasiparticle Excitations in ¹⁴⁵Tb

Corresponding author: ZHENG Yong,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan3 Chiba University, Inage-ku, Chiba 263--8512, Japan4 Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

Received Date: 2004-12-30
Accepted Date: 1900-01-01
Available Online: 2004-04-02

Abstract: High-spin states in ¹⁴⁵Tb have been populated using the ¹¹⁸Sn(³²S, 1p4n) reaction at a beam energy of 165MeV. The level scheme of ¹⁴⁵Tb has been established for the first time. The level scheme shows characteristics of spherical or slightly oblate nucleus. Based on the systematic trends of the level structure in the neighboring N=80 isotones, the level structure in ¹⁴⁵Tb below 2MeV excitation is well explained by coupling an h_11/2 valence proton to the even-even ¹⁴⁴Gd core. Above 2MeV excitation, most of the yrast levels are interpreted with multi-quasiparticle shell-model configurations.