First Decay Study of New Isotope 129pm near
Proton Drip Line
XuShuwei;XieYuanxiang;XuFurong;LiZhankui;WangXudong
【期刊名称】《近代物理研究所和兰州重离子加速器实验室年报：英文版》 【年(卷),期】2003(000)001
【摘要】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. According to the decay curve of a 99 keV γ-ray which corresponds to the known 5/2- → 1/2- transition in the daughter nucleus 129Nd of 129pm decay, the half-live of 129pm was determined to be 2.4(9) s (see Fig.l). Based on the nuclear potential-energy surface (PES) calculations, the ground-state spin and parity of 129pm was predicted as 5/2- which is favorable to fecd a 5/2&- low-lying statc in the daughter nucleus 129Nd via the (EC+/β+) decay. 【总页数】1页(49)
【关键词】钷;同位素;一阶衰退曲线;质子;核素
【作者】XuShuwei;XieYuanxiang;XuFurong;LiZhankui;WangXudong 【作者单位】DepartmentofTechnicalPhysics,PekingUniversity,Beijing.;不详
【正文语种】英文 【中图分类】O572.341
First Decay Study of New Isotope 129pm near Proton Drip Line
