β-Delayed Proton Decay of <SUP>93</SUP>Pd

WANG Xu-Dong; XU Shu-Wei; LI Zhan-Kui; XIE Yuan-Xiang; WU Zhe-Ying; XU Fu-Rong; GUO Bin; LENG Chang-Geng; WANG Chun-Fang; YU Yong

Chinese Physics C> 2003, Vol. 27> Issue(4) : 309-312

β-Delayed Proton Decay of ⁹³Pd

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Technical Physics, Peking University, Beijing 100871, China

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Abstract：
The β-‘waiting point’nucleus ⁹³Pd has been produced via ⁵⁸Ni(⁴⁰Ca,3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-γ coincidence measurement to identify the β-delayed proton precursor ⁹³ Pd, whose half-life has been measured to be 1.3±0.2s. The measured energy spectrum of β-delayed protons and relative branching ratios to the final states in the daughter nucleus ⁹²Ru are fitted by a revised statistic model calculation, and then the ground state spin of ⁹³Pd are assigned to be 9/2. Meanwhile, a nuclear energy-potential-surface (EPS) calculation is performed by using the Woods-Saxon Strutinsky method. The calculated result supports the ground state spin and parity of 9/2⁺ assignment.

References

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WANG Xu-Dong, XU Shu-Wei, LI Zhan-Kui, XIE Yuan-Xiang, WU Zhe-Ying, XU Fu-Rong, GUO Bin, LENG Chang-Geng, WANG Chun-Fang and YU Yong. β-Delayed Proton Decay of ⁹³Pd[J]. Chinese Physics C, 2003, 27(4): 309-312.

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Received: 2002-05-15
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

β-Delayed Proton Decay of ⁹³Pd

Corresponding author: WANG Xu-Dong,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Technical Physics, Peking University, Beijing 100871, China

Received Date: 2002-05-15

Accepted Date: 1900-01-01

Available Online: 2003-04-05

Abstract: The β-‘waiting point’nucleus ⁹³Pd has been produced via ⁵⁸Ni(⁴⁰Ca,3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-γ coincidence measurement to identify the β-delayed proton precursor ⁹³ Pd, whose half-life has been measured to be 1.3±0.2s. The measured energy spectrum of β-delayed protons and relative branching ratios to the final states in the daughter nucleus ⁹²Ru are fitted by a revised statistic model calculation, and then the ground state spin of ⁹³Pd are assigned to be 9/2. Meanwhile, a nuclear energy-potential-surface (EPS) calculation is performed by using the Woods-Saxon Strutinsky method. The calculated result supports the ground state spin and parity of 9/2⁺ assignment.

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β-Delayed Proton Decay of 93Pd

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β-Delayed Proton Decay of ⁹³Pd

β-Delayed Proton Decay of ⁹³Pd