β<SUP>+</SUP>/EC-Decay Study of <SUP>176</SUP>Ir Neutron-Deficient Isotope

WANG Hua-Lei; ZHANG Yu-Hu; ZHOU Xiao-Hong; GUO Ying-Xiang; LEI Xiang-Guo; XIE Yuan-Xiang; XU Shu-Wei; XING Ye-Bing; ZHENG Yong; LIU Min-Liang; XIE Cheng-Ying; SONG Li-Tao

Chinese Physics C> 2006, Vol. 30> Issue(3) : 201-206

β⁺/EC-Decay Study of ¹⁷⁶Ir Neutron-Deficient Isotope

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
The β⁺/EC decay of doubly odd ¹⁷⁶Ir has been investigated using ¹⁴⁶Nd(³⁵Cl, 5nγ)¹⁷⁶Ir heavy ion fusion evaporation reaction at 210MeV bombarding energy. With the aid of a helium-jet recoil fast tape transport system, the reaction products were transported to a low-background location for measurements. Based on the data analysis, the previously published γ rays in ¹⁷⁶Ir decay were proved, moreover, 3 new levels and 10 new γ rays were assigned to ¹⁷⁶Ir decay. The new level scheme of ¹⁷⁶Os with low excitation energy has been established. The time spectra of typical γ rays clearly indicate a long-lived low-spin isomer in ¹⁷⁶Ir nuclide.

References

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WANG Hua-Lei, ZHANG Yu-Hu, ZHOU Xiao-Hong, GUO Ying-Xiang, LEI Xiang-Guo, XIE Yuan-Xiang, XU Shu-Wei, XING Ye-Bing, ZHENG Yong, LIU Min-Liang, XIE Cheng-Ying, SONG Li-Tao, β⁺/EC-Decay Study of ¹⁷⁶Ir Neutron-Deficient Isotope[J]. Chinese Physics C, 2006, 30(3): 201-206.

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Received: 2005-04-29
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

β⁺/EC-Decay Study of ¹⁷⁶Ir Neutron-Deficient Isotope

Corresponding author: ZHANG Yu-Hu,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2005-04-29

Accepted Date: 1900-01-01

Available Online: 2006-03-05

Abstract: The β⁺/EC decay of doubly odd ¹⁷⁶Ir has been investigated using ¹⁴⁶Nd(³⁵Cl, 5nγ)¹⁷⁶Ir heavy ion fusion evaporation reaction at 210MeV bombarding energy. With the aid of a helium-jet recoil fast tape transport system, the reaction products were transported to a low-background location for measurements. Based on the data analysis, the previously published γ rays in ¹⁷⁶Ir decay were proved, moreover, 3 new levels and 10 new γ rays were assigned to ¹⁷⁶Ir decay. The new level scheme of ¹⁷⁶Os with low excitation energy has been established. The time spectra of typical γ rays clearly indicate a long-lived low-spin isomer in ¹⁷⁶Ir nuclide.

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β⁺/EC-Decay Study of ¹⁷⁶Ir Neutron-Deficient Isotope

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β⁺/EC-Decay Study of ¹⁷⁶Ir Neutron-Deficient Isotope