Separation of Radium in Reaction of 60 MeV/u ~(18)O with ThO_2

• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 物理学
• 年，卷（期）: 2001,（1）
• 页码范围: 35-35
• 页数: 1页
• 分类号: O572

摘要

In order to obserVe the β-delalyed fission from~(230)Ac~[1],experiments were performed.The 60 MeV/u~(18)O beam with an intensity of about 40 enA was used to irradiate a“radium free”ThO_2 powder target(1.5g/cm~2).The~(230)Ac isotope was produced via the reaction~(232)Th-2P→~(230)Ra[?]~(230)Ac.It is difficult to separate~(230)Ac directly from the reaction products and observe its β-delayed fission in the experiment.We solved the problem