{"created":"2023-06-20T15:15:52.560950+00:00","id":9508,"links":{},"metadata":{"_buckets":{"deposit":"7a40c51c-015f-45a8-ba84-cf654d020c9f"},"_deposit":{"created_by":3,"id":"9508","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"9508"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00009508","sets":["8:32"]},"author_link":["67867","67870","67869","67868","67866","67871"],"item_5_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1992-05-01","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{},{"bibliographic_title":"Research Report NIFS-Series","bibliographic_titleLang":"en"}]}]},"item_5_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"\"The production of the negative hydrogen ions in a large multicusp ion source has been investigated in a double-magnetic filter (DMF) configuration. In the DMF configuration, the energetic electrons are trapped by the mirror of a magnetic multicusp field, and only the thermal electrons are present in the center of the arc chamber. A large amount of H^- ions of more than 1 x 10^12 cm^-3 are produced in the center region. The electron current extracted with the H^- ions can be suppressed by a magnetic filter field in front of a plasma grid without affecting the H^- ion current. The experimental data obtained in the DMF configuration are compared with those obtained in a single-magnetic filter (SMF) configuration. In the SMF configuration, the energetic electrons are present in the center region, and the magnetic filter in front of a plasma grid reduces the electron density and temperature, which results in the reduction of the H^- ion current as well as the electron current. The extracted electron current and the optimum gas pressure for the H^- ion current are lower in the DMF configuration than those in the SMF configuration.\"","subitem_description_type":"Abstract"}]},"item_5_source_id_10":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0915-633X","subitem_source_identifier_type":"ISSN"}]},"item_5_text_8":{"attribute_name":"報告書番号","attribute_value_mlt":[{"subitem_text_value":"NIFS-149"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"\"Ando,  A.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takeiri,  Y.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kaneko,  O.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Oka,  Y.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Wada,  M.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kuroda,  T.\"","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"negative ion source","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"H^- ion source","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"NBI","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"volume production","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"magnetic filter","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"photodetachment","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"Production of Negative Hydrogen Ions in a Large Multicusp Ion Source with Double-Magnetic Filter Configuration","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Production of Negative Hydrogen Ions in a Large Multicusp Ion Source with Double-Magnetic Filter Configuration","subitem_title_language":"en"}]},"item_type_id":"5","owner":"3","path":["32"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-02-05"},"publish_date":"2010-02-05","publish_status":"0","recid":"9508","relation_version_is_last":true,"title":["Production of Negative Hydrogen Ions in a Large Multicusp Ion Source with Double-Magnetic Filter Configuration"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-06-20T20:47:09.822811+00:00"}