{"_buckets": {"deposit": "5c4d97a6-6e43-47e0-9431-5992bcc5f5a5"}, "_deposit": {"created_by": 3, "id": "6674", "owners": [3], "pid": {"revision_id": 0, "type": "depid", "value": "6674"}, "status": "published"}, "_oai": {"id": "oai:kyutech.repo.nii.ac.jp:00006674", "sets": ["20"]}, "author_link": ["28224", "28225", "28223", "17484", "17575", "754", "28222", "24702"], "item_21_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2017-06", "bibliographicIssueDateType": "Issued"}, "bibliographic_titles": [{}]}]}, "item_21_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "To protect the satellite from the accidents due to spacecraft charging, Kyushu Institute of Technology (Kyutech) is developing a device called ELFs-Charm, which stands for ELectron-emitting Film for Spacecraft CHARging Mitigation. ELFs-Charm was mounted on HORYU-II, which was launched to a Polar Earth Orbit in May 2012. From the orbital data, the emitter’s soundness and working principles were confirmed. As a next step, we are considering the practical operation for mitigation of spacecraft charging. The present emission level was not enough to increase the satellite potential. Theoretically, if the emitter can emit more electrons than the incoming electrons, it can increase the satellite potential during the sub-storm. We focus our efforts on improving two parameters. One is the potential difference of the emitter surface. Another one is the threshold voltage of electron emission. A potential difference of the emitter surface depends on the insulator charging capacity due to the secondary electron emissions with each energy gap between the satellite potential and the primary electron energy. The threshold voltage depends on the shape of emitter. We can improve the ELFs-charm emission performance by measurement of these two parameters in ONERA Space Environment vacuum chamber and Kyutech Space Environment chamber. In this paper, we describe the two parameters of several samples and how the performance was improved.", "subitem_description_type": "Abstract"}]}, "item_21_description_5": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "The 31st International Symposium on Space Technology and Science (31st ISTS), June 3-9, 2017, Matsuyama, Japan", "subitem_description_type": "Other"}]}, "item_21_description_60": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"subitem_description": "Conference Paper", "subitem_description_type": "Other"}]}, "item_21_select_59": {"attribute_name": "査読の有無", "attribute_value_mlt": [{"subitem_select_item": "no"}]}, "item_21_text_36": {"attribute_name": "著者所属", "attribute_value_mlt": [{"subitem_text_value": "Kyushu Institute of Technology (Kyutech), Kitakyushu, Japan"}, {"subitem_text_value": "Office National d\u0027Etudes et de Recherches Aérospatiales (ONERA), Toulouse, France"}, {"subitem_text_value": "Office National d\u0027Etudes et de Recherches Aérospatiales (ONERA), Toulouse, France"}, {"subitem_text_value": "Japan Aerospace Exploration Agency (JAXA), Japan"}, {"subitem_text_value": "Kyushu Institute of Technology (Kyutech), Kitakyushu, Japan"}, {"subitem_text_value": "Kyushu Institute of Technology (Kyutech), Kitakyushu, Japan"}, {"subitem_text_value": "Kyushu Institute of Technology (Kyutech), Kitakyushu, Japan"}, {"subitem_text_value": "Kyushu Institute of Technology (Kyutech), Kitakyushu, Japan"}]}, "item_21_text_63": {"attribute_name": "連携ID", "attribute_value_mlt": [{"subitem_text_value": "8409"}]}, "item_21_version_type_58": {"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": [{"creatorNames": [{"creatorName": "Tanaka, Atomu"}], "nameIdentifiers": [{"nameIdentifier": "28222", "nameIdentifierScheme": 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Evaluation of electron-emitting film for spacecraft charging mitigation (ELFs charm)
http://hdl.handle.net/10228/00007882
http://hdl.handle.net/10228/00007882