208Hg鉴别  

Identification of (208)￣Hg

作　　者：张立[1] 靳根明[1] 赵进华[1] 杨维凡[1] 杨永峰[1] 赵之正[1] 郑纪文[1] 孙秀荣[1] 工积成 李宗伟[1] 秦芝[1] 郭光辉[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《高能物理与核物理》1994年第4期296-301,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金;中国科学院八.五重大项目基金

摘　　要：本文较详细地描述了新丰中子核素２０８Ｈｇ的鉴别及半衰期测定程序．２０８Ｈｇ的鉴别采用了二步离线化学分离：第一步是基于热色谱原理的高效、高选择性的Ｈｇ产物收集，第二步是周期性地提取生长起来的Ｔ１．在提取的Ｔ１样品中观察到半衰期约３ｍｉｎ的２６１４．６ｋｅＶγ活性．该γ活性可归结为由２０８Ｈｇβ－衰变而生长起来的２０８Ｔ１的衰变γ。This paper describes in detail the procedure used in identifing the new neutronrich isotope 208Hg and measuring its half-life. The idetification included two-step chemical separations. The first step was the collection of Hg element products from the irradiated target with a high efficiency and good element selectivity, which was realized by means of an off-line melt Ph target device. The second step was to extract periodically the growing T1 element from the collected Hg sample. In the γspectra of the extracted T1 samples a 2614.6keV γ activity with a half-life of 3min was observed, which may only be assigned to the daughter 208T1 of 208Hg β- decay.

关 键 词：丰中子核素 化学分离 鉴别 汞208 

分 类 号：O562.6[理学—原子与分子物理]