{"_buckets": {"deposit": "05072178-37cc-4eb3-bbeb-6aca520da6c6"}, "_deposit": {"created_by": 1, "id": "16634", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "16634"}, "status": "published"}, "_oai": {"id": "oai:jaxa.repo.nii.ac.jp:00016634", "sets": ["1703", "1891"]}, "author_link": ["151194", "151199", "151198", "151195", "151197", "151196"], "item_5_alternative_title_2": {"attribute_name": "その他のタイトル（英）", "attribute_value_mlt": [{"subitem_alternative_title": "Development status of micro20 MW ion engine"}]}, "item_5_biblio_info_10": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2010-01", "bibliographicIssueDateType": "Issued"}, "bibliographicVolumeNumber": "平成21年度", "bibliographic_titles": [{"bibliographic_title": "宇宙輸送シンポジウム: 講演集録"}, {"bibliographic_title": "Proceedings of Space Transportation Symposium", "bibliographic_titleLang": "en"}]}]}, "item_5_description_14": {"attribute_name": "会議概要（会議名, 開催地, 会期, 主催者等）", "attribute_value_mlt": [{"subitem_description": "平成21年度宇宙輸送シンポジウム(2010年1月14日-15日, 宇宙航空研究開発機構宇宙科学研究本部)", "subitem_description_type": "Other"}]}, "item_5_description_15": {"attribute_name": "会議概要（会議名, 開催地, 会期, 主催者等）（英）", "attribute_value_mlt": [{"subitem_description": "Space Transportation Symposium (January 14-15, 2010. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)),  Sagamihara, Kanagawa Japan", "subitem_description_type": "Other"}]}, "item_5_description_17": {"attribute_name": "抄録（英）", "attribute_value_mlt": [{"subitem_description": "The mu20 ion source was operated over 6000 hours. This is the intermediate report of long duration test to identify the thruster failure modes to shift the endurance test and to evaluate the relation between thrust performance and grid hole diameter distribution. We carried out the grid hole diameter distribution measurement with respect to an accelerator grid using the A3 size flat-head scanner. Comparing the status of 2000 hours operation, the aperture ratio of the accelerator grid was changed 17% to 20%. Propellant utilization efficiency was slightly decreased from 76% to 70% with 530mA operation. The 10 to 15% increment of hole diameter around the outer gas ports was observed. Trend of an accelerator grid current was approached around 4mA.", "subitem_description_type": "Other"}]}, "item_5_description_18": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "形態: カラー図版あり", "subitem_description_type": "Other"}, {"subitem_description": "形態: CD-ROM1枚", "subitem_description_type": "Other"}]}, "item_5_description_19": {"attribute_name": "内容記述（英）", "attribute_value_mlt": [{"subitem_description": "Physical characteristics: Original contains color illustrations", "subitem_description_type": "Other"}, {"subitem_description": "Note: One CD-ROM", "subitem_description_type": "Other"}]}, "item_5_description_32": {"attribute_name": "資料番号", "attribute_value_mlt": [{"subitem_description": "資料番号: AA0064741064", "subitem_description_type": "Other"}]}, "item_5_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "宇宙航空研究開発機構宇宙科学研究本部"}]}, "item_5_publisher_9": {"attribute_name": "出版者（英）", "attribute_value_mlt": [{"subitem_publisher": "Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)"}]}, "item_5_source_id_24": {"attribute_name": "書誌レコードID", "attribute_value_mlt": [{"subitem_source_identifier": "AN10324301", "subitem_source_identifier_type": "NCID"}]}, "item_5_text_35": {"attribute_name": "JAXAカテゴリ", "attribute_value_mlt": [{"subitem_text_value": "JAXAカテゴリ: シンポジウム・研究会"}]}, "item_5_text_36": {"attribute_name": "JAXAカテゴリ2", "attribute_value_mlt": [{"subitem_text_value": "JAXAカテゴリ2: IS"}]}, "item_5_text_42": {"attribute_name": "シンポジウム区分", "attribute_value_mlt": [{"subitem_text_value": "シンポジウム区分: 013"}]}, "item_5_text_43": {"attribute_name": "DSpaceコレクション番号", "attribute_value_mlt": [{"subitem_text_value": "DSpaceコレクション番号: 7"}]}, "item_5_text_6": {"attribute_name": "著者所属", "attribute_value_mlt": [{"subitem_text_value": "宇宙航空研究開発機構宇宙科学研究本部"}, {"subitem_text_value": "宇宙航空研究開発機構宇宙科学研究本部"}, {"subitem_text_value": "宇宙航空研究開発機構宇宙科学研究本部"}]}, "item_5_text_7": {"attribute_name": "著者所属（英）", "attribute_value_mlt": [{"subitem_text_language": "en", "subitem_text_value": "Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"}, {"subitem_text_language": "en", "subitem_text_value": "Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"}, {"subitem_text_language": "en", "subitem_text_value": "Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"}]}, "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": "細田, 聡史"}], "nameIdentifiers": [{"nameIdentifier": "151194", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "西山, 和孝"}], "nameIdentifiers": [{"nameIdentifier": "151195", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "國中, 均"}], "nameIdentifiers": [{"nameIdentifier": "151196", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Hosoda, Satoshi", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "151197", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Nishiyama, Kazutaka", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "151198", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kuninaka, Hitoshi", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "151199", "nameIdentifierScheme": "WEKO"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "conference paper", "resourceuri": "http://purl.org/coar/resource_type/c_5794"}]}, "item_title": "「mu20」イオンエンジンの開発状況: 運転6000時間", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "「mu20」イオンエンジンの開発状況: 運転6000時間"}]}, "item_type_id": "5", "owner": "1", "path": ["1703", "1891"], "permalink_uri": "https://jaxa.repo.nii.ac.jp/records/16634", "pubdate": {"attribute_name": "公開日", "attribute_value": "2015-03-26"}, "publish_date": "2015-03-26", "publish_status": "0", "recid": "16634", "relation": {}, "relation_version_is_last": true, "title": ["「mu20」イオンエンジンの開発状況: 運転6000時間"], "weko_shared_id": -1}