@article{oai:nifs-repository.repo.nii.ac.jp:00006858,
 author = {Matsumoto,  Y. and Nishiura,  M. and Shinto,  K. and Yamaoka,  H. and Sasao,  M. and Wada,  M.},
 journal = {Annual Report of National Institute for Fusion Science},
 month = {2016-03-15},
 title = {Plasma Potential Simulation for Improvement of Beam Extraction Efficiency from a Negative Ion Source},
 volume = {Annual Report Apr.2008 - Mar.2009},
 year = {}
}