{"created":"2023-05-15T14:37:05.340294+00:00","id":47803,"links":{},"metadata":{"_buckets":{"deposit":"6b5571ef-1351-43f9-84fb-517dbb619152"},"_deposit":{"created_by":1,"id":"47803","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"47803"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00047803","sets":["1"]},"author_link":["479870","479869","479868","479871"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"042511-20","bibliographicPageStart":"042511-1","bibliographicVolumeNumber":"23","bibliographic_titles":[{"bibliographic_title":"Physics of Plasmas"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The nonlinear interactions between shear Alfven modes and tangentially injected beam ions in the 150–400 keV range are studied numerically in a JT-60U tokamak scenario with realistic geometry, large magnetic drifts, and strong beam drive. For this purpose, the recently developed orbit-based resonance analysis (ORA) method for circulating particles is extended, so that it can be applied to the nonlinear regime, where the spectrum of orbit-based poloidal mode numbers m orb varies in time as the fast ions undergo wave-particle trapping and radial transport. In particular, the extended ORA method captures the effect of nonlinear overlaps between resonances associated with neighboring harmonics (m_orb, n) and (m_orb+1, n) that cause long-distance ballistic transport. Two cases with low toroidal mode numbers n >= 1 are studied: an n = 1 mode without resonance overlap and a strongly driven n = 3 mode with resonance overlap. For both cases, an effective radial profile of the resonant poloidal mode number m_res = M_eff(r) is computed and used to track the effective resonant frequency w_res(t) of individual particles during their radial motion r(t). In Paper II, this frequency tracking technique will be applied to study the nonlinear frequency chirping and convective amplification of the modes.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The American Institute of Physics"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1063/1.4947033","subitem_relation_type_select":"DOI"}}]},"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":"ビアワーゲ, アンドレアス"}],"nameIdentifiers":[{"nameIdentifier":"479868","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"篠原, 孝司"}],"nameIdentifiers":[{"nameIdentifier":"479869","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"ビアワーゲ アンドレアス","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"479870","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"篠原 孝司","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"479871","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":"Orbit-based analysis of nonlinear energetic ion dynamics in tokamaks. I. Effective mode number profile and resonant frequency tracking","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Orbit-based analysis of nonlinear energetic ion dynamics in tokamaks. I. Effective mode number profile and resonant frequency tracking"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-04-26"},"publish_date":"2017-04-26","publish_status":"0","recid":"47803","relation_version_is_last":true,"title":["Orbit-based analysis of nonlinear energetic ion dynamics in tokamaks. I. Effective mode number profile and resonant frequency tracking"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:35:23.228919+00:00"}