Study on Helium Behavior in Metals by Nuclear Reaction Method and Nuclear Magnetic Resonance

核反应法和核磁共振研究氦在金属中的行为

• 批准号: 01580220
• 负责人: NAKAJIMA Hideo
• 金额: $ 1.34万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01580220/
• 关键词: Helium; Implantation; Nuclear Magnetic Resonance; Nuclear Reaction Method; Diffusion; Vanadium; 酸素; ヘリウムキャビティ

The present research was undertaken to elucidate the mechanism of diffusion and precipitation of helium in metals by nuclear reaction method, nuclear magnetic resonance and transmission electron microscopy.Helium-3 ions were implanted into tantalum foils by the Extrion Implantor. The condition was follows : ion energy 90keV, 5.8x10^<16>He/cm^2, and implantation at room temperature.The results by nuclear reaction method and nuclear magnetic resonance show that both methods are good tools to research the helium behaviour, and implanted helium already diffuses through the sample foil significantly.For the research by TEM, helium was into vanadium alloys implanted by boron-10 method and tritium trick method. Then, the samples were irradiated by JMTR, JOYO and FFTF. After the irradiation the samples were observed by TEM ; irradiated morphology and helium cavity density were measured. These helium behaviour was discussed in terms of the atomic size effect of alloying elements.

本文采用核反应法、核磁共振法和透射电镜法研究了氦在金属中的扩散和沉淀机理。实验条件为：离子能量90 keV，注入氦浓度5.8 × 10 ~<16>（-1）He/cm ~ 2，室温下注入.核反应法和核磁共振法的结果表明，这两种方法都是研究氦行为的好工具，注入的氦已经在样品箔中显著扩散.透射电镜研究中，采用硼-10法和氚陷阱法对钒合金进行了氦的注入.然后，用JMTR、JOYO和FFTF辐照样品。辐照后用透射电镜观察样品，测量辐照形貌和氦腔密度。从合金元素的原子尺寸效应的角度讨论了氦的这些行为。

项目成果

H. Matsui and H. Nakajima: "Swelling of a V-5Fe Alloy After Irradiation in JOYO" the Science Reports of the Research Institutes, Tohoku University. (1991)

H. Matsui 和 H. Nakajima：“JOYO 中 V-5Fe 合金辐照后的膨胀”，东北大学研究所的科学报告。

H.Matsui and H.Nakajima: "Swelling of a Vー5Fe Alloy after Irradiation in JOYO" the Science Reports of the Research Institutes,Tohoku University. A36. (1991)

H.Matsui 和 H.Nakajima：“JOYO 中辐照后 V-5Fe 合金的膨胀”，东北大学研究所的科学报告（1991）。

H.Matsui and H.Nakajima: "Swelling of a Vー5Fe Alloy after Irradiation in JOYO," the Science Reports of the Research Institutes,Tohoku University. A36. (1991)

H.Matsui 和 H.Nakajima：“JOYO 中辐照后 V-5Fe 合金的膨胀”，东北大学研究所的科学报告 (1991)。