{"created":"2023-06-20T14:36:00.138076+00:00","id":2295,"links":{},"metadata":{"_buckets":{"deposit":"8308ae5c-aad1-4499-a864-ac0bfdbc6b4a"},"_deposit":{"created_by":1,"id":"2295","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2295"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002295","sets":["1887:1893","9:10:256:299"]},"author_link":["5093","5096","5094","5097","5095","5091","5090","5092"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Spatial charge cloud distribution of microchannel plates: Measurements and modeling"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-11-30","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"JAXA-RR-05-010","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告"},{"bibliographic_title":"JAXA Research and Development Report","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"MCP出力チャージの大きさ(=チャージクラウド)を実験と計算の両方で調べた。MCP出力チャージはMCPのチャンネル径で決まる有限の初期半径を持って出力される。そしてその電子雲は、角度分散とエネルギーを持っており、アノード上で初期の大きさ以上に広がる。それに加え、アノード落下時に空間電荷効果でも広がる。チャージクラウドを様々なアノード電圧、電荷量(印加電圧の制御による)での大きさを求めた。実験結果はこれらの効果を考慮したモデル計算でよく説明できる。このときチャージクラウドの空間電荷密度分布をガウス分布と仮定することで大きさを求めた。ガウス分布の標準偏差を、チャージクラウドの半径とした。MCP出力側からアノードの距離が2.5mm、アノード電圧70〜300Vの場合、チャージクラウドの半径は、およそ0.4〜1mmの間をとる。半径は、アノード電圧が大きいほど小さく、ほぼアノード電圧の2乗根の反比例する。また、半径はMCP出力電荷量にも依存し、電荷量が少ないほど、半径も小さくなる。モデルでは、パルス電流の落下時の広がりを求めることにより、空間電荷分布を計算できる。この結果は、Edgarの実験結果ともよく一致する。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Spatial distributions of the charge cloud on the anode are examined both experimentally and theoretically. The initial electron cloud at the MCP output has angular divergence and energies, therefore the size of the charge cloud on the anode becomes broader than the original size at the MCP output. Furthermore, space charge effects may broaden the size of the charge cloud. The size of the charge cloud has been examined with various conditions of the acceleration voltage between the MCP output and the anode (anode voltage) and the MCP voltage to control the gain and hence the amount of output electrons from the MCP. The experimental results are well explained in terms of these effects in comparison with the model calculation of the spreading electron cloud in which a Gaussian distribution is assumed for the spatial distribution so that its standard deviation is taken as a charge cloud radius. The radius was measured to be 0.4 mm to 1 mm under the condition that the gap between the MCP output and the anode is 2.5 mm with accelerated anode voltage of 70 to 300 V. The radius is approximately inverse proportional to the square root of the anode voltage. The radius has also a dependence of MCP output charge. Smaller MCP output charge exhibits smaller charge cloud radius. Spatial distribution of charge cloud are calculated from the model in which pulsed current broad along the way to an anode with space charge effects. The model results are compared with the experimental results of Edgar and show good agreements.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0049045000","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-05-010","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":"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"},{"subitem_text_value":"宇宙航空研究開発機構 宇宙科学研究本部"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"齋藤, 実穂"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"齋藤, 義文"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"向井, 利典"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"浅村, 和史"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Saito, Miho","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Saito, Yoshifumi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Mukai, Toshifumi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Asamura, Kazushi","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":"49045000.pdf","filesize":[{"value":"3.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"49045000.pdf","url":"https://jaxa.repo.nii.ac.jp/record/2295/files/49045000.pdf"},"version_id":"39527d25-29bc-43df-9889-d79ed5cf1e8a"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"マイクロチャネルプレート","subitem_subject_scheme":"Other"},{"subitem_subject":"チャージクラウド","subitem_subject_scheme":"Other"},{"subitem_subject":"電荷密度分布","subitem_subject_scheme":"Other"},{"subitem_subject":"クラウドサイズ","subitem_subject_scheme":"Other"},{"subitem_subject":"波高","subitem_subject_scheme":"Other"},{"subitem_subject":"マクスウェル方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"運動方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"パラメータ依存性","subitem_subject_scheme":"Other"},{"subitem_subject":"アノード電圧","subitem_subject_scheme":"Other"},{"subitem_subject":"ヒストグラム","subitem_subject_scheme":"Other"},{"subitem_subject":"空間電荷","subitem_subject_scheme":"Other"},{"subitem_subject":"microchannel plate","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"charge cloud","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"charge density distribution","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cloud size","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"pulse amplitude","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Maxwell equation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"equation of motion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"parameter dependency","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"anode voltage","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"histogram","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"space charge","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":"MCP出力チャージの空間分布:測定とモデル","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"MCP出力チャージの空間分布:測定とモデル"}]},"item_type_id":"3","owner":"1","path":["299","1893"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"2295","relation_version_is_last":true,"title":["MCP出力チャージの空間分布:測定とモデル"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:25:07.457028+00:00"}