{"created":"2021-03-01T06:38:08.366541+00:00","id":31904,"links":{},"metadata":{"_buckets":{"deposit":"517e7120-7cfd-4b6a-9fa4-a184033c87c0"},"_deposit":{"id":"31904","owners":[],"pid":{"revision_id":0,"type":"depid","value":"31904"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00031904"},"item_8_biblio_info_6":{"attribute_name":"\u66f8\u8a8c\u60c5\u5831","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1998-12","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{"bibliographic_title":"\u5e73\u621010\u5e74\u5ea6\u6838\u878d\u5408\u79d1\u5b66\u7814\u7a76\u6240\u5171\u540c\u7814\u7a76\u7814\u7a76\u4f1a\u300c\u30d1\u30eb\u30b9\u30d1\u30ef\u30fc\u751f\u6210\u9ad8\u6e29\u30fb\u9ad8\u5bc6\u5ea6\u30d7\u30e9\u30ba\u30de\u7269\u7406\u3068\u305d\u306e\u5fdc\u7528\u300d\u30bb\u30c3\u30b7\u30e7\u30f34(16)"},{"bibliographic_title":"\u5e73\u621010\u5e74\u5ea6\u6838\u878d\u5408\u79d1\u5b66\u7814\u7a76\u6240\u5171\u540c\u7814\u7a76\u7814\u7a76\u4f1a\u300c\u30d1\u30eb\u30b9\u30d1\u30ef\u30fc\u751f\u6210\u9ad8\u6e29\u30fb\u9ad8\u5bc6\u5ea6\u30d7\u30e9\u30ba\u30de\u7269\u7406\u3068\u305d\u306e\u5fdc\u7528\u300d\u30bb\u30c3\u30b7\u30e7\u30f34(16)","bibliographic_titleLang":"en"}]}]},"item_8_description_4":{"attribute_name":"\u6284\u9332","attribute_value_mlt":[{"subitem_description":"A large diameter backward wave oscillator (BWO) without guiding magnetic field is demonstrated experimentally. The beam propagation is achieved by filling SWS with helium gas. The oscillation mode of the BWO might be the axisymmetric TM mode as well as TE mode. The output power of the TM mode is less than lkW, which corresponds to electronic efficiency less than 0.004 %. At zeo-magnetic field, the conventional Cherenkov and cyclotron interactions are degenerate and perturbed beam motions perpendicular as well as parallel to an axial direction should be taken into account. In the degenerate beam interaction, surface charge \u03c31 at beam-vacuum boundary plap essential role. Numerical analysis shows that the degenerate interaction is superior to the conventional Cherenkov interaction in the high current region above 100 A and in the weakly relativistic energy region.","subitem_description_type":"Abstract"}]},"item_8_description_5":{"attribute_name":"\u5185\u5bb9\u8a18\u8ff0","attribute_value_mlt":[{"subitem_description":"\u672c\u5831\u544a\u66f8\u306f\u3001\u5927\u5b66\u5171\u540c\u5229\u7528\u6a5f\u95a2\u6cd5\u4eba\u81ea\u7136\u79d1\u5b66\u7814\u7a76\u6a5f\u69cb\u6838\u878d\u5408\u79d1\u5b66\u7814\u7a76\u6240\u304b\u3089\u30ea\u30dd\u30b8\u30c8\u30ea\u767b\u9332\u8a31\u8afe\u3092\u5f97\u3066\u3001\u5e73\u62109\u5e74\u5ea6\uff5e\u5e73\u621011\u5e74\u5ea6\u79d1\u5b66\u7814\u7a76\u8cbb\u88dc\u52a9\u91d1(\u57fa\u76e4\u7814\u7a76(C)(2))\u7814\u7a76\u6210\u679c\u5831\u544a\u66f8(\u8ab2\u984c\u756a\u53f7:09680456)\u300c\u30c1\u30a7\u30ec\u30f3\u30b3\u30d5\u30fb\u30b5\u30a4\u30af\u30ed\u30c8\u30ed\u30f3\u7e2e\u91cd\u76f8\u4e92\u4f5c\u7528\u306b\u3088\u308b\u30de\u30a4\u30af\u30ed\u6ce2\u767a\u751f\u306e\u7814\u7a76\u300d\uff08\u5c0f\u690b\u4e00\u592b\u8457\uff09\u304b\u3089\u8907\u88fd\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002","subitem_description_type":"Other"}]},"item_8_full_name_3":{"attribute_name":"\u8457\u8005\u5225\u540d","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"174444","nameIdentifierScheme":"WEKO"}],"names":[{"name":"\u5c0f\u690b, \u4e00\u592b"}]}]},"item_8_publisher_7":{"attribute_name":"\u51fa\u7248\u8005","attribute_value_mlt":[{"subitem_publisher":"\u6838\u878d\u5408\u79d1\u5b66\u7814\u7a76\u6240"}]},"item_8_select_19":{"attribute_name":"\u8457\u8005\u7248\u30d5\u30e9\u30b0","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_creator":{"attribute_name":"\u8457\u8005","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ogura, Kazuo"}],"nameIdentifiers":[{"nameIdentifier":"174441","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ono, Atsushi"}],"nameIdentifiers":[{"nameIdentifier":"174442","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Watanabe, Osamu"}],"nameIdentifiers":[{"nameIdentifier":"174443","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"\u30d5\u30a1\u30a4\u30eb\u60c5\u5831","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-27"}],"displaytype":"detail","filename":"10_4-16.pdf","filesize":[{"value":"367.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"10_4-16.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/31904/files/10_4-16.pdf"},"version_id":"c7b83a2d-1815-4c25-b08b-bec32662c3f0"}]},"item_keyword":{"attribute_name":"\u30ad\u30fc\u30ef\u30fc\u30c9","attribute_value_mlt":[{"subitem_subject":"Backward wave oscillator","subitem_subject_scheme":"Other"},{"subitem_subject":"Slow wave structure","subitem_subject_scheme":"Other"},{"subitem_subject":"Cherenkov interaction","subitem_subject_scheme":"Other"},{"subitem_subject":"Cyclotron interaction","subitem_subject_scheme":"Other"},{"subitem_subject":"Degenerate interaction","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"\u8a00\u8a9e","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"\u8cc7\u6e90\u30bf\u30a4\u30d7","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Study of a Large Diameter Backward Wave Oscillator without Guiding Magnetic Field","item_titles":{"attribute_name":"\u30bf\u30a4\u30c8\u30eb","attribute_value_mlt":[{"subitem_title":"Study of a Large Diameter Backward Wave Oscillator without Guiding Magnetic Field"},{"subitem_title":"Study of a Large Diameter Backward Wave Oscillator without Guiding Magnetic Field","subitem_title_language":"en"}]},"item_type_id":"8","owner":"1","path":["453/457","423/435/436"],"pubdate":{"attribute_name":"\u516c\u958b\u65e5","attribute_value":"2015-03-10"},"publish_date":"2015-03-10","publish_status":"0","recid":"31904","relation_version_is_last":true,"title":["Study of a Large Diameter Backward Wave Oscillator without Guiding Magnetic Field"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2021-03-01T09:46:13.806414+00:00"}