@article{oai:nifs-repository.repo.nii.ac.jp:00009396,
 author = {Wada,  M. and Nishida,  T. and Shinto,  K. and Yamaoka,  H. and Shimozuma,  T. and Nishiura,  M.},
 journal = {Annual Report of National Institute for Fusion Science},
 month = {2016-03-14},
 title = {Extraction of Hydrogen Negative Ions from a 14 GHz Microwave Ion Source},
 volume = {Annual Report Apr.2010 - Mar.2011},
 year = {}
}