New Nuclide 129Pm Near the Proton Drip Line

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XU Shu-Wei, XIE Yuan-Xiang, LI Zhan-Kui and WANG Xu-Dong. New Nuclide 129Pm Near the Proton Drip Line[J]. Chinese Physics C, 2004, 28(2): 158-160.
XU Shu-Wei, XIE Yuan-Xiang, LI Zhan-Kui and WANG Xu-Dong. New Nuclide 129Pm Near the Proton Drip Line[J]. Chinese Physics C, 2004, 28(2): 158-160. shu
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Received: 2003-06-18
Revised: 1900-01-01
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New Nuclide 129Pm Near the Proton Drip Line

    Corresponding author: XU Shu-Wei,
  • Institute of Modern Physics,CAS Lanzhou 730000,China

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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