{"created":"2024-02-27T00:30:57.186318+00:00","id":2000334,"links":{},"metadata":{"_buckets":{"deposit":"7ee982c8-69af-4956-9c75-0f4fe522f1f9"},"_deposit":{"created_by":20,"id":"2000334","owner":"20","owners":[20],"pid":{"revision_id":0,"type":"depid","value":"2000334"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:02000334","sets":["6:7"]},"author_link":["128453","128454","128455","126819","128456","128457","60882","128458","128459","126533","128460","128461","128462","128463","128464","128465","128466","128467","128468","128469","128470","100562"],"control_number":"2000334","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-02-09","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageStart":"036019","bibliographicVolumeNumber":"64","bibliographic_titles":[{"bibliographic_title":"Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges","bibliographic_titleLang":"en"}]}]},"item_10001_description_4":{"attribute_name":"著者ID","attribute_value_mlt":[{"subitem_description":"ORCID 0000-0002-2486-1847","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A series of high-frequency (400 ∼ 1000 kHz) bursting core-localized Alfvén instabilities have been observed during ohmic discharges in EAST tokamak. The instability trigger favours the discharge conditions of low toroidal magnetic field and low electron density. The toroidal mode numbers are mainly n = 2 ∼ 3 and they propagate in the ion diamagnetic drift (co-current) direction. These modes are radially localized in the range of ρtor = 0.2 ∼ 0.35 based on Doppler BackScatter measurement. They are identified as ellipticity-induced Alfvén eigenmodes (EAEs) occurring at q = 1 rational surfaces by magnetohydrodynamics simulations using the realistic geometry and plasma profiles. The EAEs show regular bursts with ∼10 ms duration along with the mode frequency chirping downwards and upwards rapidly. It is also found that sawtooth events can interrupt the growth and evolution of the EAEs, causing the modes to disappear immediately. Passing energetic electrons (EEs) that move much faster than Alfvén velocity are responsible for the destabilization of these EAEs, which attribute to the fact that the large poloidal and toroidal frequencies mostly cancel each other and satisfy the EAE resonance","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOP Publishing","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1088/1741-4326/ad1af7","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"en","subitem_relation_name_text":"P. Su et al 2024 Nucl. Fusion 64 036019"}]}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Publisher version"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1088/1741-4326/ad1af7","subitem_relation_type_select":"DOI"}}]},"item_10001_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© 2024 The Author(s). Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attributionto the author(s) and the title of the work, journal citation and DOI.","subitem_rights_language":"en"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1741-4326","subitem_source_identifier_type":"ISSN"}]},"item_10001_text_23":{"attribute_name":"NAIS","attribute_value_mlt":[{"subitem_text_value":"14172"}]},"item_10001_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"SU, Pengjuan"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"LAN, H."}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"ZHOU, 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interaction","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"EAST tokamak","subitem_subject_language":"en","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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"20","path":["7"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-02-27"},"publish_date":"2024-02-27","publish_status":"0","recid":"2000334","relation_version_is_last":true,"title":["Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges"],"weko_creator_id":"20","weko_shared_id":-1},"updated":"2024-02-27T01:22:14.800722+00:00"}