@article{oai:nifs-repository.repo.nii.ac.jp:00011347,
 author = {KISAKI,  Masashi and IKEDA,  Katsunori and NAKANO,  Haruhisa and TSUMORI,  Katsuyoshi and FUJIWARA, Yutaka and HABA, Yasuaki and KAMIO,  Shuji and NAGAOKA,  Kenichi and NAGAOKA, Ken-ichi and OSAKABE,  Masaki},
 journal = {Plasma and Fusion Research},
 month = {Sep},
 note = {Plasma grid bias has been utilized for reducing an electron density in the vicinity of a plasma grid in negative ion sources for fusion, resulting in achievement of low co-extracted electron current. In this study, the effectiveness and feasibility of the plasma grid bias on beam optics optimization are demonstrated. It is shown that the beam optics strongly depends on the bias voltage and is successfully optimized at different bias voltages depending on the discharge power. Responses of the beam properties such as the perveance and the current ratio to the plasma grid bias are also shown for both hydrogen and deuterium beams.},
 title = {Demonstration of Beam Optics Optimization Using Plasma Grid Bias in a Negative Ion Source},
 volume = {13},
 year = {2018}
}