@article{oai:nifs-repository.repo.nii.ac.jp:00009012, author = {Tokunaga, K. and Fujiwara, T. and Yoshida, N. and Ohtawa, Y. and Akiyama, T. and Kawahata, K.}, journal = {Annual Report of National Institute for Fusion Science}, month = {2016-03-14}, title = {Optical Property Change on the First Mirror for Plasma Diagnostics Used in LHD}, volume = {Annual Report Apr.2007 - Mar.2008}, year = {} }