@techreport{oai:nifs-repository.repo.nii.ac.jp:00010168,
 author = {Sakamoto,  R. and Yamada,  H. and Tanaka,  K. and Narihara,  K. and Morita,  S. and Sakakibara,  S. and Masuzaki,  S. and Baylor,  L. R. and Fisher,  P. W. and Combs,  S. K. and Gouge,  M. J. and Kato,  S. and Komori,  A. and Kaneko,  O. and Ashikawa,  N. and de, Varies, P. and Emoto,  M. and Funaba,  H. and Goto,  M. and Ida,  K. and Idei,  H. and Ikeda,  K. and Inagaki,  S. and Isobe,  M. and Kado,  S. and Kawahata,  K. and Khlopenkov,  K. and Kubo,  S. and Kumazawa,  R. and Minami,  T. and Miyazawa,  J. and Morisaki,  T. and Murakami,  S. and Muto,  S. and Mutoh,  T. and Nagayama,  Y. and Nakamura,  Y. and Nakanishi,  H. and Nishimura,  K. and Noda,  N. and Notake,  T. and Kobuchi,  T. and Liang,  Y. and Ohdachi,  S. and Ohyabu,  N. and Oka,  Y. and Osakabe,  M. and Ozaki,  T. and Pavlichenko,  R. O. and Peterson,  B. J. and Sagara,  A. and Saito,  K. and Sasao,  H. and Sasao,  M. and Sato,  K. and Sato,  M. and Seki,  T. and Shimozuma,  T. and Shoji,  M. and Sudo,  S. and Suzuki,  H. and Takechi,  M. and Takeiri,  Y. and Tamura,  N. and Toi,  K. and Tokuzawa,  T. and Torii,  Y. and Tsumori,  K. and Yamada,  I. and Yamaguchi,  S. and Yamamoto,  S. and Yoshimura,  Y. and Watanabe,  K.Y. and Watari,  T. and Yamazaki,  K. and Hamada,  Y. and Motojima,  O. and Fujiwara,  M.},
 month = {Sep},
 note = {Pellet injection has been used as a primary fueling scheme in Large Helical Device (LHD). Pellet injection has extended an operational region of NBI plasmas to higher densities with maintaining preferable dependence of energy confimement on density, and achieved several important data, such as plasma stored energy (0.88 MJ), energy confinement time (0.3 s), beta (2.4% at 1.3 T) and density (1.1xl0^20 m^-3). These parameters cannot be attained by gas puffing. Ablation and subsequent behavior of plasma has been investigated. Measured pellet penetration depth that is estimated by duration of the H alpha emission is shallower than predicted penetration depth from the simple neutral gas shielding (NGS) model. The penetration depth can be explained by NGS model with fast ion effect on the ablation. Just after ablation, redistribution of ablated pellet mass was observed in short time (~ 400 mus). The redistribution causes shallow deposition and low fueling efficiency.},
 title = {Impact of Pellet Injection on Extension of Operational Region in LHD},
 year = {2000}
}