{"created":"2023-06-20T14:35:47.772804+00:00","id":2076,"links":{},"metadata":{"_buckets":{"deposit":"7b071ad8-5b37-4860-956b-c788de04601b"},"_deposit":{"created_by":1,"id":"2076","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2076"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002076","sets":["1398:1408:1415","1887:1893","9:10:121:124"]},"author_link":["2978","2956","2959","2943","2961","2981","2955","2945","2972","2980","2976","2944","2958","2971","2965","2966","2954","2964","2962","2960","2968","2969","2977","2949","2953","2947","2952","2970","2975","2963","2979","2950","2951","2957","2982","2948","2946","2967","2973","2974"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Cosmic-ray observation by the second Antarctic long duration balloon flight: BESS-Polar II"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-03-31","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"JAXA-RR-09-007","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告: 大気球研究報告"},{"bibliographic_title":"JAXA Research and Development Report","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"超伝導スペクトロメータを気球により高空に持ち上げ，銀河から降り注ぐ宇宙線を観測する実験（BESS実験）を実施している．1993 年の初フライト以来，カナダ北部およびアメリカにおいて10回の飛翔実験に成功し，反陽子スペクトルの精密測定，宇宙線反ヘリウムおよび反重陽子の探索，各種一次宇宙線および大気宇宙線の観測，を行っている．2002年からは，南極周回長時間飛翔気球LDB(Long Duration Balloon)を用いた長時間観測のための新しい測定器（BESS-Polar 測定器）を開発し，2004年12月に南極において第１回目の飛翔実験（BESS-Polar I）を行い8.5日間の観測に成功した．その成果をもとに，さらに改良を施した測定器を用いて，第2 回飛翔観測実験（BESS-Polar II）を2007年12月から2008年１月にかけて実施し，南極を約１周半するフライトにおいて約24.5日の宇宙線観測に成功した．測定器は順調に動作し，約47億事象の宇宙線イベントを記録し，データを回収した．現在，観測データの解析が精力的に進められており，これまでに，各測定器が期待される性能を発揮していることが確認できている．本稿ではBESS-Polar II 測定器および飛翔実験の報告を行う．","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Balloon-borne Experiment with Superconducting Spectrometer (BESS) has been carried out to observe various galactic cosmic-ray radiation. Since its first flight in 1993, ten flights were successfully carried out in northern America to study elemental particle phenomena in the early universe. We have developed the new instruments for long duration balloon flight over Antarctica (BESS-Polar) and succeeded in the first flight in December, 2004. On the basis of its result, we improved the detector performance for further long duration flight at the solar minimum. The second flight (BESS-Polar II) was carried out from December 2007 to January 2008. We successfully observed about 4.7 billion cosmic-ray events during 24.5 day flight. Data was recovered and analysis is now proceeding. This report describes BESS-Polar II flight and detector performance during the flight.","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"},{"subitem_description":"著者人数: 30人","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: AA0064759003","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-09-007","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":"高エネルギー加速器研究機構"},{"subitem_text_value":"神戸大学"},{"subitem_text_value":"神戸大学"},{"subitem_text_value":"東京大学"},{"subitem_text_value":"東京大学"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"東京大学"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"宇宙航空研究開発機構宇宙科学研究本部"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"神戸大学"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"subitem_text_value":"宇宙航空研究開発機構宇宙科学研究本部"},{"subitem_text_value":"高エネルギー加速器研究機構"},{"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":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"Kobe University"},{"subitem_text_language":"en","subitem_text_value":"Kobe University"},{"subitem_text_language":"en","subitem_text_value":"University of Tokyo"},{"subitem_text_language":"en","subitem_text_value":"University of Tokyo"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"University of Tokyo"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"Kobe University"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA)"},{"subitem_text_language":"en","subitem_text_value":"High Energy Accelerator Research Organization (KEK)"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA)"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"吉村, 浩司"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"安部, 航"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"折戸, 玲子"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"坂井, 賢一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"篠田, 遼子"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鈴木, 純一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田中, 賢一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"谷口, 敬"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西村, 純"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"野崎, 光昭"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"灰野, 禎一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"長谷川, 雅也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"福家, 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