{"created":"2021-03-01T06:37:26.525286+00:00","id":31281,"links":{},"metadata":{"_buckets":{"deposit":"54abb423-d42f-4efd-b3d4-e4f8ab27325e"},"_deposit":{"id":"31281","owners":[],"pid":{"revision_id":0,"type":"depid","value":"31281"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00031281","sets":["423:435:1841","453:457"]},"item_8_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"弱相対論的電子ビームによって駆動される特大後進波発振器の動作モード"}]},"item_8_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"54-74","bibliographicPageEnd":"33","bibliographicPageStart":"29","bibliographicVolumeNumber":"PST-06","bibliographic_titles":[{"bibliographic_title":"電気学会プラズマ研究会資料 : Papers of Technical Meeting on Plasma Science and Technology, IEE Japan"},{"bibliographic_title":"電気学会プラズマ研究会資料 : Papers of Technical Meeting on Plasma Science and Technology, IEE Japan","bibliographic_titleLang":"en"}]}]},"item_8_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We study the operation mode of oversized BWO driven by weakly relativistic electron beams less than 100 kV. In experiments, the performance of oversized BWOs is improved by improving the SWS and the beam shape. The output power increases up to about 500 kW in K-band and about 200 kW in Q-band, which corresponds to the quality factor Pf2 of about 3.5×105 kW・GHz2. High-power operations in the nonaxisymmetric mode are observed. To analyze the oversized BWO, a new version of linear theory is used, in which three-dimensional beam perturbation are self-consistently considered. For the oversized SWS, the electromagnetic waves are surface waves localized near the SWS wail. Two kinds of beam interaction, slow cyclotron and Cherenkov interactions, exist in the oversized BWO as in the non-oversized BWO. The nonaxisymmetric mode can be excited by the completely axisymmetric beam in the completely axisymmetric system. The growth rate of nonaxisymmetric mode is in the same order as the axisymmetric mode. If the beam is apart from SWS, the growth rates decrease exponentially. The beam radius should be controlled carefully to drive oversized BWOs.","subitem_description_type":"Abstract"}]},"item_8_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"電気学会"}]},"item_8_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (C) 2006 電気学会"}]},"item_8_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ogura, K."}],"nameIdentifiers":[{"nameIdentifier":"170817","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Miyazawa, Y."}],"nameIdentifiers":[{"nameIdentifier":"170818","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kiuchi, Y."}],"nameIdentifiers":[{"nameIdentifier":"170819","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Aoyama, S."}],"nameIdentifiers":[{"nameIdentifier":"170820","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tanaka, H."}],"nameIdentifiers":[{"nameIdentifier":"170821","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sugawara, A."}],"nameIdentifiers":[{"nameIdentifier":"170822","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-26"}],"displaytype":"detail","filename":"PST-06_29-33.pdf","filesize":[{"value":"482.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"PST-06_29-33.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/31281/files/PST-06_29-33.pdf"},"version_id":"7314a932-7208-461e-a868-f310bc6a303c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"oversized backward wave oscillator","subitem_subject_scheme":"Other"},{"subitem_subject":"weakly relativistic beam","subitem_subject_scheme":"Other"},{"subitem_subject":"axisymmetric mode","subitem_subject_scheme":"Other"},{"subitem_subject":"nonaxisymmetric mode","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"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":"Operation Mode of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Operation Mode of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam"},{"subitem_title":"Operation Mode of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam","subitem_title_language":"en"}]},"item_type_id":"8","owner":"1","path":["457","1841"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-09-16"},"publish_date":"2014-09-16","publish_status":"0","recid":"31281","relation_version_is_last":true,"title":["Operation Mode of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T04:01:46.568135+00:00"}