@misc{oai:repo.qst.go.jp:00079430, author = {Lee, S.E and Y. Hatano and Hara, M. and Masuzaki, S. and Tokitani, M. and Oyaizu, Makoto and Kurotaki, Hironori and Hamaguchi, Dai and Nakamura, Hirofumi and Asakura, Nobuyuki and Oya, Y. and Widdowson, A. and Jachmich, S. and Rubel, M, and Likonen, J. and Oyaizu, Makoto and Kurotaki, Hironori and Hamaguchi, Dai and Nakamura, Hirofumi and Asakura, Nobuyuki}, month = {Sep}, note = {Tritium (T) distributions on the plasma-facing surfaces (PFSs) and inside castellation of Be limiter tiles from the JET tokamak with the ITER-like wall (ILW) was analyzed using imaging plate (IP) technique and -ray induced X-ray spectrometry (BIXS). Regarding to PFSs, the outer poloidal limiter (OPL) showed significantly higher T concentrations than the inner wall guard limiter (IWGL) and upper dump plate (DP). The concentration of T on OPL was high at the central part. However, deuterium (D) and metallic impurities showed maximum concentration at the edges. This difference in distributions indicated different deposition and retention mechanisms between T and D. In contrast, deposition profiles of T concentrations on the castellated surfaces extended up to ~ 5 mm into the gap, i.e. were similar to those of D and metallic impurities found by ion beam analysis., 14 th International Symposium on Fusion Nuclear Technology}, title = {Tritium Distribution Analysis on Be Limiter Tiles from JET-ITER Like Wall Campaigns using Imaging Plate Technique and β-Ray Induced X-ray Spectrometry}, year = {2019} }