{"created":"2023-06-20T14:35:48.428238+00:00","id":2086,"links":{},"metadata":{"_buckets":{"deposit":"f0d48cff-836e-4157-b98f-c50a18d9dbae"},"_deposit":{"created_by":1,"id":"2086","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2086"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002086","sets":["1887:1893","9:10:121:127"]},"author_link":["3098","3099","3097","3096"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Particle-In-Cell simulations on beam neutralizing electrons for ion engine"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-02-26","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"JAXA-RR-09-004","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告: イオン加速グリッド耐久認定用数値解析 JIEDI (JAXA Ion Engine Development Initiatives) ツールの研究開発ワークショップ論文集"},{"bibliographic_title":"JAXA Research and Development Report","bibliographic_titleLang":"en"}]}]},"item_3_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":"Workshop on research and development of JIEDI (JAXA Ion Engine Development Initiatives) tool for numerical evaluation of ion engine grid lifetime","subitem_description_type":"Other"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"In order to examine the density and temperature distribution of electrons which neutralize ion beam emitted from an ion engine, we performed three-dimensional Particle-In-Cell simulations and investigated the electron behavior inside or outside the ion beam flows in the downstream region with respect to the accel grid. We calculated the charge density distribution of ions in three-dimensional spatial grid space covering the downstream region of the ion engine by using the ion beamlet data provided by Dr. Nakano. By solving Poisson's equation with the charge density data the potential distribution is calculated. Then we start emitting electrons from the down stream edge of the simulation region. At each time step, the charge density at each grid point is updated by the emitted electrons and the corresponding electric potential is renewed. By using the new potential values, we update the electrons dynamics by solving equation of motion for each electron. Since we focus on the short time scale of electron motion, we assume that ions which are about 100 thousand times heavier than electrons are immobile. We keep solving the above-mentioned PIC simulation until the steady state in terms of electron distribution is achieved. By using the electron data obtained in the simulations, we analyze the electron local temperature by calculating the local electron velocity distributions. From the data, we found that temperature is not uniform in space. The electron temperature at the ion beam edges become approximately 1.6 times higher than that of originally injected electrons.","subitem_description_type":"Other"}]},"item_3_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"}]},"item_3_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0064642005","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-RR-09-004","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-1113","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA1192675X","subitem_source_identifier_type":"NCID"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"京都大学生存圏研究所"},{"subitem_text_value":"京都大学"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"RISH, Kyoto University"},{"subitem_text_language":"en","subitem_text_value":"Kyoto University"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"臼井, 英之"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鐘ヶ江, 将詩"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Usui, Hideyuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kanegae, Masashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-15"}],"displaytype":"detail","filename":"64642005.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"64642005.pdf","url":"https://jaxa.repo.nii.ac.jp/record/2086/files/64642005.pdf"},"version_id":"83637a9f-ae8a-47cf-8d15-437a8125a414"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Ion Engine, Grid Erosion Analysis, Ion Beam Neutralization, Particle-In-Cell simulation, Electron temperature","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"イオンエンジンにおけるビーム中和電子の粒子解析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"イオンエンジンにおけるビーム中和電子の粒子解析"}]},"item_type_id":"3","owner":"1","path":["127","1893"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"2086","relation_version_is_last":true,"title":["イオンエンジンにおけるビーム中和電子の粒子解析"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:28:52.812039+00:00"}