The role and application of ion beam analysis for studies of plasma-facing components in controlled fusion devices

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• 作者：Marek Rubel^a ; ^b ; ^{Marek.Rubel@ee.kth.se" class="auth_mail" title="E-mail the corresponding author} ; Per Petersson^a ; ^b ; Eduardo Alves^a ; ^c ; Sebastijan Brezinsek^a ; ^d ; Joseph Paul Coad^a ; ^e ; Kalle Heinola^a ; ^f ; Matej Mayer^a ; ^g ; Anna Widdowson^a ; ^e ; JET Contributors^a ; ¹
• 关键词：Ion beam analysis ; Nuclear reaction ; Controlled fusion ; First wall materials ; Deuterium
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2016
• 出版时间：15 March 2016
• 年：2016
• 卷：371
• 期：Complete
• 页码：4-11
• 全文大小：2984 K

文摘

First wall materials in controlled fusion devices undergo serious modification by several physical and chemical processes arising from plasma–wall interactions. Detailed information is required for the assessment of material lifetime and accumulation of hydrogen isotopes in wall materials. The intention of this work is to give a concise overview of key issues in the characterization of plasma-facing materials and components in tokamaks, especially in JET with an ITER-Like Wall. IBA techniques play a particularly prominent role here because of their isotope selectivity in the low-Z range (1–10), high sensitivity and combination of several methods in a single run. The role of ³He-based NRA, RBS (standard and micro-size beam) and HIERDA in fuel retention and material migration studies is presented. The use of tracer techniques with rare isotopes (e.g. ¹⁵N) or marker layers on wall diagnostic components is described. Special instrumentation, development of equipment to enhance research capabilities and issues in handling of contaminated materials are addressed.