摘要: 通过⁷⁰As的放射性衰变研究了⁷⁰Ge的激发态，新发现能量为1 036.99，1 196.66，1 539.29和2 531.7 keV的四条新γ射线，重新确认了2 219.34 keV γ射线的跃迁位置，新确认496.74，1 295.24和1 417.24 keV这三条γ射线首次放入衰变纲图，本工作证实了1 881.67，2 325.42和2 424.41 keV γ射线的跃迁位置，建议了能量为4 243.10和5 265.81 keV的两个新能级，建立了新的衰变纲图，基于比较半衰期和γ跃迁分支比建议了一些能级的自旋-宇称。


The excited states of the ⁷⁰Ge nucleus are investigated in radioactive decay of the ⁷⁰As. Four new transitions with 1 036.99, 1 196.66, 1 539.29 and 2 531.7 keV are found for the first time. The position of 2 219.34 keV transition are reassigned, the transition positions of 496.74, 1 295.24 and 1 417.24 keV γ-rays are assigned for the first time, and the placements of 1 881.67, 2 325.42 and 2 424.41 keV γ-rays are confirmed in the present work. Two new levels, at 4 243.10 and 5 265.81 keV excitation energy, respectively, are proposed. The decay scheme is established and for a number of levels spin-parity assignments are suggested on the basis of logft values and γ-branching ratios.