^(208)Hgβ^-衰变γ纲图  

γ Scheme Following ^(208)Hg β^-Decay

作　　者：张立[1] 胡青元[1] 赵进华[1] 郑纪文[1] 李占奎[1] 李世红 甘再国[1] 于涌[1] 范红梅[1] 郭斌[1] 张天梅[1] 王春芳[1] 王同庆[1] 靳根明[1] 森田浩介 吉田敦 蒲越虎 工藤久昭 矢野安重 

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]日本理化学研究所回旋加速器室 [3]日本新泻大学核化学系

出　　处：《高能物理与核物理》2000年第9期823-828,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!( 1 95750 56);中国科学院重大项目资助&&

摘　　要：以18 O重离子束轰击厚天然铅靶 ,通过多核子转移反应生成2 0 8Hg核 .辐照铅片放入离线熔化铅靶气相热色谱装置中处理 ,分离并收集汞元素产物 .完成了 4πΔEβγ γ ,γ X(γ)关联事件谱及γ射线时序单谱测量 .建议了 2 1条γ射线 ,以及能量为 1 3 65,1 72 7keV的两条2 0 8Tl新能级的2 0 8Hgβ- 衰变部分γ纲图 .The 208 \ Hg has been produced in multi\|nucleon transfer reactions induced by 18 \ O ion beam on a thick,natural lead target.The irradiated lead pieces were put into agasthermochromatographic device, in which the Hg\|element products were separated and collected.The 4πΔ E \-β γ γ and γ X(γ) coincidence as well as time\|succesive γ\|ray single spectrum measurements were performed. A partial γ scheme following 208 \ Hg β\+- decay has been proposed for the first time, which has taken into account 21 γ\|rays and two new energy levels at 1365 and 1727keV,respectively.

关 键 词：衰变纲图 能级 γγ关联 核结构 

分 类 号：O571.3[理学—粒子物理与原子核物理]