{"created":"2023-05-15T15:02:06.757473+00:00","id":84242,"links":{},"metadata":{"_buckets":{"deposit":"3e031f8b-2340-43fe-a0f9-54d65431d341"},"_deposit":{"created_by":1,"id":"84242","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"84242"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00084242","sets":["1"]},"author_link":["1017648","1017645","1017647","1017644","1017641","1017649","1017642","1017650","1017643","1017646"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-11","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"116036","bibliographicVolumeNumber":"61","bibliographic_titles":[{"bibliographic_title":"Nuclear Fusion"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Ion cyclotron emissions (ICEs) are generally considered to be emissions of fast waves driven by velocity-space instabilities due to fast ions. However, on JT-60U, measured properties of ICEs observed at frequencies lower than the bulk ion cyclotron frequency (L-ICEs) do not match the fast-wave dispersion relation, indicating the possibility of L-ICEs being slow-wave emissions. In this paper, we show that L-ICE observation on JT-60U can be explained in terms of a slow-wave emission driven by fast ions, i.e. a slow-wave ICE. To investigate whether the slow wave can be driven by fast ions, its linear growth rate has been calculated in a typical discharge using a wave dispersion code. This wave dispersion code is capable of performing calculations with an arbitrary spatially-localized velocity distribution. For the growth rate calculation, we have directly used fast ion velocity distributions evaluated by an orbit following Monte-Carlo simulation. It is found that negative-ion-source neutral beam (N-NB) injected fast ions can destabilize the slow wave. Its frequency and wavenumber at high linear growth rates are close to experimental observations of L-ICE. In addition, observed L-ICE frequencies agree reasonably well with frequencies based on the slow-wave dispersion relation at measured toroidal wavenumbers in several discharges. Moreover, the observed frequencies also agree with the Doppler-shifted cyclotron resonance frequencies for the N-NB injected ion. Therefore, L-ICE in JT-60U is identified as a slow-wave ICE driven by the N-NB injected fast ions and distinguished from other ICEs through a measurement of its frequency and wavenumber. ","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOP Publishing"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1088/1741-4326/ac2777","subitem_relation_type_select":"DOI"}}]},"item_8_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://iopscience.iop.org/article/10.1088/1741-4326/ac2777","subitem_relation_type_select":"URI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0029-5515","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Shuhei, Sumida"}],"nameIdentifiers":[{"nameIdentifier":"1017641","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Koji, Shinohara"}],"nameIdentifiers":[{"nameIdentifier":"1017642","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ichimura, Makoto"}],"nameIdentifiers":[{"nameIdentifier":"1017643","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Bando, Takahiro"}],"nameIdentifiers":[{"nameIdentifier":"1017644","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Bierwage, Andreas"}],"nameIdentifiers":[{"nameIdentifier":"1017645","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shunsuke, Ide"}],"nameIdentifiers":[{"nameIdentifier":"1017646","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shuhei, Sumida","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1017647","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Koji, Shinohara","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1017648","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Bierwage, Andreas","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1017649","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shunsuke, Ide","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1017650","nameIdentifierScheme":"WEKO"}]}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Identification of slow-wave ion cyclotron emission on JT-60U","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Identification of slow-wave ion cyclotron emission on JT-60U"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-09-28"},"publish_date":"2021-09-28","publish_status":"0","recid":"84242","relation_version_is_last":true,"title":["Identification of slow-wave ion cyclotron emission on JT-60U"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T18:33:43.221393+00:00"}