摘要
利用75MeV的18O束流，通过70Zn（18O，p3n）反应布居了84Rb核的高自旋态，测量了激发函数，γ－γ符合及DCO比值，新观察到了40个能级，50多条γ跃迁，建立了到目前为止最完整的能级纲图，其正负宇称分别推高到了17+和17-．通过与Rb各奇-奇同位素核和N＝47的各奇-奇核比较，发现它们的结构非常相似．
High spin states of 84Rb were populated by the 70Zn (18O,p3n) reaction at 75MeV 18O beams provided by the HI-13 Tandem Accelerator of CIAE. Excitation function, gamma-gamma coincidence and DCO Ratio were measured by using 8 BGO Compton-supton -suppressed HPGe spectrometers and a planar HPGe detector. More than 40excited states and 50 γ rays were identified in the Present work. A new level scheme of 84Rb was established, in which the positive and negative bands are extended to 17+and 17- respectively . Comparing the odd-odd Rb isotopes and N= 47 isotones, the similar structure is observed in their low excited states.
出处
《高能物理与核物理》
CSCD
北大核心
1999年第9期890-896,共7页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金!19635030
核工业基金
