@article{oai:nifs-repository.repo.nii.ac.jp:00008983, author = {Tokitani, M. and Kasahara, H. and Masuzaki, S. and Motojima, G. and Shoji, M. and Ueda, Y. and Yoshida, N. and Yoshimura, Y. and Nagasaki, K. and Ashikawa, N. and Mutoh, T. and Yamada, H. and LHD, Experiment Group}, journal = {Annual Report of National Institute for Fusion Science}, month = {2016-03-14}, title = {Helium Retention Properties under Long Pulse Discharges in LHD}, volume = {Annual Report Apr.2013 - Mar.2014}, year = {} }