New Nuclide <SUP>129</SUP>Pm Near the Proton Drip Line

XU Shu-Wei; XIE Yuan-Xiang; LI Zhan-Kui; WANG Xu-Dong

Chinese Physics C> 2004, Vol. 28> Issue(2) : 158-160

New Nuclide ¹²⁹Pm Near the Proton Drip Line

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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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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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

New Nuclide ¹²⁹Pm Near the Proton Drip Line

Corresponding author: XU Shu-Wei,

Institute of Modern Physics,CAS Lanzhou 730000,China

Received Date: 2003-06-18

Accepted Date: 1900-01-01

Available Online: 2004-02-05

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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New Nuclide 129Pm Near the Proton Drip Line

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New Nuclide 129Pm Near the Proton Drip Line

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New Nuclide ¹²⁹Pm Near the Proton Drip Line

New Nuclide ¹²⁹Pm Near the Proton Drip Line