Atom Movement in Pure Cu and Cu-Ni Alloy Single Crystals under Ion-Beam Irradiation

离子束辐照下纯铜和铜镍合金单晶的原子运动

• 批准号: 13650712
• 负责人: FUJINO Yutaka
• 金额: $ 2.3万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650712/
• 关键词: Interaction of Radiation with Solids; TRIM CODE; Rutherford Backscattering; Ion Channeling; Dislocation; Ion Implantation; Materials Property Change Induced by Ion-Beam Irradiation; Materials Modification; ラザフォード後方散乱法; TRIIM-CODE

Interaction of energetic ion beams with solids and materials property change induced under ion-beam irradiatin have long been attracting attention from both points of view of its basic understanding and application. In order to understand the phenomena, a large number of works have already been performed both theoretically and experimentally. However, the process of the interaction and material property change induced under ion-beam irradiation have not yet been fully understood and still remain as a field of fundamental scientific problems, although material modification by ion-beam irradiation has widely been applied in various engineering fields.In this study, Rutherford backscattering and channeling measurements have been applied to investigate both deep radiation damage and depth profile of implanted Au atoms in pure Cu and Cu-1at.% Ni alloy single-crystal specimens, which were irradiated off axis at room temperature by 300 keV Au+ ions to a dose of 2x10^<16> ions/cm^2. The damage range and depth range of the implanted Au atoms in the specimens of pure Cu were strikingly deeper than those in the specimens of Cu-1at.% Ni alloys, respectively. An atom movement mechanism in solids under ion beam irradiation is proposed as the origin of the observed results.

高能离子束与固体的相互作用以及离子束辐照引起的材料性能变化长期以来从其基本理解和应用的角度引起了人们的关注。为了理解这些现象，已经在理论上和实验上进行了大量的工作。然而，尽管离子束辐照材料改性已广泛应用于各个工程领域，但离子束辐照引起的相互作用和材料性能变化的过程尚未完全了解，仍然是一个基础科学问题。在这项研究中，卢瑟福背向散射和沟道测量已应用于研究纯铜和 Cu-1at.% Ni 合金单晶样品中注入的金原子的深度辐射损伤和深度剖面，这些样品在室温下离轴辐照300 keV Au+ 离子至 2x10^<16> 离子/cm^2 的剂量。纯 Cu 样品中注入的 Au 原子的损伤范围和深度范围分别比 Cu-1at.% Ni 合金样品中的损伤范围和深度范围深得多。提出了离子束照射下固体中的原子运动机制作为观察结果的起源。