Study of cerium diffusion in undoped lithium-6 enriched glass with Rutherford backscattering spectrometry

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• 作者：Xiaodong Zhang^a ; ^{xzhang39@utk.edu" class="auth_mail" title="E-mail the corresponding author} ; Michael E. Moore^a ; Kyung-Min Lee^a ; Eric D. Lukosi^a ; Jason P. Hayward^a ; ^b
• 关键词：Lithium-6 enriched glass ; Diffusion coefficient ; Activation energy ; Fick&rsquo ; s second law ; Rutherford backscattering spectrometry
• 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：1 July 2016
• 年：2016
• 卷：378
• 期：Complete
• 页码：8-11
• 全文大小：1198 K

文摘

Undoped lithium-6 enriched glasses coated with pure cerium (99.9%) with a gold protection layer on top were heated at three different temperatures (500, 550, and 600 °C) for varied durations (1, 2, and 4 h). Diffusion profiles of cerium in such glasses were obtained with the conventional Rutherford backscattering technique. Through fitting the diffusion profiles with the thin-film solution of Fick’s second law, diffusion coefficients of cerium with different annealing temperatures and durations were solved. Then, the activation energy of cerium for the diffusion process in the studied glasses was found to be 114 kJ/mol with the Arrhenius equation.