{"created":"2023-06-20T15:16:56.282694+00:00","id":10701,"links":{},"metadata":{"_buckets":{"deposit":"d8055b8f-4d49-4e5a-84ac-63732fbc5929"},"_deposit":{"created_by":19,"id":"10701","owners":[19],"pid":{"revision_id":0,"type":"depid","value":"10701"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00010701","sets":["6:7"]},"author_link":["122252","66799","122595","66795","66803","126550","126104","122655"],"item_10001_alternative_title_1":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"LHDにおけるNBI用水素負イオン源とビーム生成の最新の研究成果"}]},"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-04-22","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"Special Issue1-ITC25","bibliographicPageStart":"2505038","bibliographicVolumeNumber":"11","bibliographic_titles":[{"bibliographic_title":"Plasma and Fusion Research"}]}]},"item_10001_description_4":{"attribute_name":"著者ID","attribute_value_mlt":[{"subitem_description":"0000-0002-0585-4561","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The state of hydrogen plasma in the extraction region in a hydrogen negative-ion (H−) source for NBI has been investigated. We clearly observe an improvement of H− density owing to the surface production effect with Cs seeding. H− ions are widely distributed in the extraction region which is obtained by movable cavity ring down (CRD). We confirm a negative ion rich plasma with a few electrons in the extraction region, which state is important for reduction of electron contamination in extracting beam. An extraction area is reached 30mm from the PG surface, which is measured by a 2D imaging diagnostic for Hα emission. We find the insensitive area for H− extraction at the PG surface between the apertures. Negative ions produced at the surface are considered to\nhave been supplied in the extraction region. The flow velocity of H− ions is obtained by a four-pin Langmuir probe using a photodetachment technique with an Nd:YAG laser. H− ion flows from the plasma grid surface, and its direction drastically changes at 20mm from the production surface. This flow behavior is considered to be an important characteristic for improving H− density in the extraction region.","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Japan Society of Plasma Science and Nuclear Fusion Research"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1585/pfr.11.2505038","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Published version"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1585/pfr.11.2505038","subitem_relation_type_select":"DOI"}}]},"item_10001_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"(c) 2016 The Japan Society of Plasma Science and Nuclear Fusion Research"}]},"item_10001_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12346675","subitem_source_identifier_type":"NCID"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"18806821","subitem_source_identifier_type":"ISSN"}]},"item_10001_text_23":{"attribute_name":"NAIS","attribute_value_mlt":[{"subitem_text_value":"|||"}]},"item_10001_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"IKEDA,  Katsunori"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"GENG, Shaofei"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"TSUMORI,  Katsuyoshi"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"NAKANO,  Haruhisa"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"KISAKI,  Masashi"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"NAGAOKA,  Kenichi"},{"creatorName":"NAGAOKA, Ken-ichi"}],"familyNames":[{},{}],"givenNames":[{},{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"OSAKABE,  Masaki"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"TAKEIRI,  Yasuhiko"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-11-29"}],"displaytype":"detail","filename":"pfr2016_11-2505038.pdf","filesize":[{"value":"3.0 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"pfr2016_11-2505038","url":"https://nifs-repository.repo.nii.ac.jp/record/10701/files/pfr2016_11-2505038.pdf"},"version_id":"072b62d9-f017-44b7-b320-d27b01ce23a8"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"NBI","subitem_subject_scheme":"Other"},{"subitem_subject":"negative ion source","subitem_subject_scheme":"Other"},{"subitem_subject":"extraction region","subitem_subject_scheme":"Other"},{"subitem_subject":"negative-ion rich plasma","subitem_subject_scheme":"Other"},{"subitem_subject":"particle flow","subitem_subject_scheme":"Other"},{"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Recent Studies of Hydrogen Negative Ion Source and Beam Production for NBI in Large Helical Device","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Recent Studies of Hydrogen Negative Ion Source and Beam Production for NBI in Large Helical Device"}]},"item_type_id":"10001","owner":"19","path":["7"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-11-29"},"publish_date":"2021-11-29","publish_status":"0","recid":"10701","relation_version_is_last":true,"title":["Recent Studies of Hydrogen Negative Ion Source and Beam Production for NBI in Large Helical Device"],"weko_creator_id":"19","weko_shared_id":19},"updated":"2023-09-28T06:33:27.088628+00:00"}