Advanced electron microscopy study of defect-accumulation processes in radiation-resistant model metals

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360395
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Shimane University
• Principal Investigator: ARAKAWA Kazuto 島根大学, 総合理工学研究科(研究院), 准教授 (30294367)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 照射損傷 / 格子欠陥 / 電子顕微鏡 / 核融合炉 / 原子炉 / 転位 / カスケード衝突

Outline of Final Research Achievements

Primary origins of the degradation of nuclear-fission and fusion materials are accumulation of lattice defects upon neutron irradiation. Therefore, accurate knowledge on the component processes of defect accumulation, such as production and migration of individual defects and interaction among defects, will be useful for accurate prediction of the lifetime of nuclear materials.
In the present study, we have examined comparatively simple model metals using high-voltage electron microscopes and an ion-accelerator combined electron microscope, and revealed some structures and behaviors of nanometer-sized defects and atomic-size point defects.

Free Research Field

格子欠陥