600MeV^(18)O+^(nat)Pb(厚靶)系统生成Hg同位素独立产额测量(Ⅰ)实验和技术  

Independent Yield Measurement for the Hg-Isotope Products From 600 MeV ^(18)O +^(nat)Pb(thick target) System (Ⅰ) Experiment and Technique

作　　者：张立[1] 赵进华[1] 郑继文[1] 秦芝[1] 杨永峰[1] 张纯[1] 王积成[1] 郭天瑞[1] 靳根明[1] 胡青元[1] 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《高能物理与核物理》1998年第11期969-976,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!19575056;中科院重大项目

摘　　要：采用在束气相热色谱的Hg元素分离方法和特殊的探测技术，测量了600MeV(18)O束轰击厚天然铅靶生成的(180)Hg至(209)Hg计20余种放射性Hg同位素产物的独立截面，描写了实验装置、探测技术、γ谱分析以及从递次衰变子体的γ活性来提取Hg同位素生成截面的方法。With an on-line, gas-thermochromatographic Hg element separation as well as a special detection technique, the independent cross sections of the radioactive Hg-isotopes produced from a 600MeV 18O + natPb(thick target) reaction system were determined. The independent cross sections of 22 Hg-isotope nuclides in the mass range from 180 Hg to 209 Hg were measured. The experimental set-up, the detection technique, the γ -spectrum analyses and the extraction method of production cross sections based on the γ activities from the successively decaying daughter nuclei were described.

关 键 词：独立产额 生成截面 放射性同位素 递次衰变 汞 

分 类 号：O571.42[理学—粒子物理与原子核物理] O571.413[理学—物理]