New Nuclide 129Pm Near the Proton Drip Line |
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| Authors: | XU Shu-Wei XIE Yuan-Xiang LI Zhan-Kui WANG Xu-Dong |
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| Affiliation: | Institute of Modern Physics,CAS Lanzhou 730000,China |
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| Abstract: | The very neutron-deficient nuclide 129Pm was produced via the 92Mo(40Ca, p2n) reaction and identified for the first time by using the X-γ coincidence in combination with a He-jet tape transport system. From the decay of a 99keV γ ray which corresponds to the 5/2－→1/2－ transition in the daughter nucleus 129Nd following the (EC+β+) decay of 129Pm, the half-life of 129Pm was determined to be 2.4(6)s. |
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