【作者】 丁伟； 施立群； 龙兴贵；

【Author】 DING Wei, SHI Li-qun, LONG Xing-gui ( Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , P.O. Box 919-202, Mianyang 621900, China; Institute of Modern Physics, Fudan University, Shanghai 200433, China)

【机构】 中国工程物理研究院核物理与化学研究所； 复旦大学现代物理研究所；

【摘要】 文章介绍用离子束方法分析贮氢金属中氢同位素含量与分布的实验条件与设计,并分析各自的优、缺点。通过实验测量与分析表明,用离子束分析方法可获得氢同位素含量与分布的丰富信息和精确数值。用6．0 MeV的O离子束进行ERD分析的优点是截面为卢瑟福截面,所用的Mylar膜薄,能使 H、D、T明显分开,测量精确,缺点则是对样品制备要求高,分析深度小;用7．4 MeV的4He离子束进行 ERD分析能得到H、D、T的分布信息,对Ti的分析深度可达到3．0 μm,缺点则是三者的谱图相互重叠, 模拟解谱的误差较大;用3．0 MeV的质子进行PBS分析,只能获得D、T的分布信息,但分析深度更深。更多还原

【Abstract】 In this paper, experimental arrangements of measuring hydrogen isotope concentration and distribution in metal hydride with ion beam analysis methods were reported, and the advantage and disadvantage of different methods were analyzed too. Experiment results show that it can get abundant information and accurate value by these ways. It can get an accurate value since it’s the Rutherford cross-section, and the Mylar film used in the experiment is thin enough for H, D and T distinguishing each other while using ERD analysis method with 6. 0 MeV O ion beam to proceed this work, but the disadvantage of this method is that the sample preparing is more difficult, and the analysis depth is lower. It could get the distribution information of H, D and T and the analysis depth is about 3. 0 μm while using ERD analysis method with 7. 4 MeV 4 He ion beam, but the disadvantage is that the spectra of H, D and T overlap each other, which makes a big error in simulated calculation . If using PBS method with 3 . 0 MeV proton, the analysis depth is deeper, but it couldn’t get the H distribution information.更多还原