^(120)Ba的β衰变  

The Decay of ^(120)Ba

作　　者：徐树威[1] 袁双贵[1] 郭俊盛[1] 刘满清[1] E.Hagberg V.T.Koslowsky G.Dyck J.C.Hardy H.Schmeing 

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]Atomic Energy of Canada Limited,Chalk River Nuclear Laboratories [3]Atomic Energy of Canada Limited,Chalk River Nuclear Laboratories,

出　　处：《高能物理与核物理》1991年第2期170-177,共8页High Energy Physics and Nuclear Physics

摘　　要：用68 MeV的^(16)O束轰击2 mg/cm^2的^(106)Cd靶产生^(120)Ba再把它氟化,送入氦喷嘴离子源。在线质量分离的^(120)Ba的衰变性质被γ-γ,γ-γ和γ-β符合测量。其半衰期为24±2S,总衰变能Q_(EC)=5.0±0.3MeV,并获得了简单的^(120)Ba的衰变纲图。^(120)Ba was produced by 68MeV ^(16)O beam bombarding a 2mg/cm^2 thick ^(106)Cd target and fluorated in a halium-jet ion source. The decay of on-line mass separated activity ^(120)Ba has been studied by γ-X, γ-γ γ-β coincidence measurements. Its half- life was measured to be 24±2s. The total decay energy was extracted to be Q_(EC)= 5.0±0.3 MeV. A simple decay scheme has been proposed.

关 键 词：^120Ba 衰变 Β射线 

分 类 号：O571.322[理学—粒子物理与原子核物理]