Chinese Physics C > 2004, Vol. 28 > Issue(2): 148-151

Study of 1/2[660](πi_13/2) Rotation Band in¹⁷⁹Au

Institute of Modern Physics,CAS,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 states in ¹⁷⁹Au have been studied experimentally using the ¹⁴⁹Sm( ³⁵Cl,5n) heavy-ion fusion-evaporation reaction at beam energies of 164—180MeV. Measurements of γ-ray excitation functions, X-γ coincidences and γ-γ-t coincidences were performed with 13 BGO(AC)HPGe and 3 LOAX detectors. Based on these measurements, a rotational band built on the 1/2[660](πi _13/2) Nilsson state has been established for the first time, and this band has been assigned to ¹⁷⁹Au according to the systematic of level structure in odd-A Au nuclei. Properties of the 1/2[660](πi _13/2) band in odd-A Au nuclei are discussed with an emphasis on the band-head energy while changing the neutron number.

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SONG Li-Tao, ZHOU Xiao-Hong, GUO Ying-Xiang and SUN Zhi-Yu. Study of 1/2[660](πi _13/2) Rotation Band in ¹⁷⁹Au[J]. Chinese Physics C, 2004, 28(2): 148-151.

SONG Li-Tao, ZHOU Xiao-Hong, GUO Ying-Xiang and SUN Zhi-Yu. Study of 1/2[660](πi _13/2) Rotation Band in ¹⁷⁹Au[J]. Chinese Physics C, 2004, 28(2): 148-151. shu

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Received: 2003-06-25
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

Study of 1/2[660](πi_13/2) Rotation Band in¹⁷⁹Au

Corresponding author:ZHOU Xiao-Hong,

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

Received Date:2003-06-25
Accepted Date:1900-01-01
Available Online:2004-02-05

Abstract:High-spin states in¹⁷⁹Au have been studied experimentally using the¹⁴⁹Sm(³⁵Cl,5n) heavy-ion fusion-evaporation reaction at beam energies of 164—180MeV. Measurements of γ-ray excitation functions, X-γ coincidences and γ-γ-t coincidences were performed with 13 BGO(AC)HPGe and 3 LOAX detectors. Based on these measurements, a rotational band built on the 1/2[660](πi_13/2) Nilsson state has been established for the first time, and this band has been assigned to¹⁷⁹Au according to the systematic of level structure in odd-A Au nuclei. Properties of the 1/2[660](πi_13/2) band in odd-A Au nuclei are discussed with an emphasis on the band-head energy while changing the neutron number.