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

New Nuclide¹²⁹Pm 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 Nuclide¹²⁹Pm 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 nuclide¹²⁹Pm was produced via the⁹²Mo(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 nucleus¹²⁹Nd following the (EC+β⁺) decay of¹²⁹Pm, the half-life of¹²⁹Pm was determined to be 2.4(6)s.

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New Nuclide¹²⁹Pm Near the Proton Drip Line

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通讯作者:陈斌, bchen63@163.com

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