{"created":"2023-06-20T15:16:15.399850+00:00","id":9947,"links":{},"metadata":{"_buckets":{"deposit":"ef172d3e-ebc3-4a48-9e3d-159c12f218b5"},"_deposit":{"created_by":3,"id":"9947","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"9947"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00009947","sets":["8:32"]},"author_link":["61016","61017"],"item_5_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1994-06-01","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{},{"bibliographic_title":"Research Report NIFS-Series","bibliographic_titleLang":"en"}]}]},"item_5_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"\"Ignition characteristics in D-T helical reactors of various sizes are studied with the operation path method on the bar{P}_ht tau_E^2-T plane and the POPCON method.  Based on the empirical LHD scaling, a confinement has to be improved by more than a factor of 1.5 for reaching ignition and more than a factor gamma_H =2 to have optimum fusion  power in a reference helical reactor with R > 8m,  bar{a}=2 m, and B_o > 6 T. The density limit and  the confinement time saturation effect with respect to the density degrade the favorable density scaling of the confinement time (tauE proportional to n^0.69 and are found to be important limiting factors for ignition characteristics.  For a reactor of R = 10  m, bar{a}=2 m, gamma_H=2, B_o=7T with an external heating power P_ex=100 MW, the minimum auxiliary heating power is around 55 MW at an operating density 40% below the density limit, and ignition can be reached in a finite time.  The ignition characteristics for larger size (R=15 and 20 m) reactors and gyro-reduced Bohm scaling are also studies.\"","subitem_description_type":"Abstract"}]},"item_5_source_id_10":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0915-633X","subitem_source_identifier_type":"ISSN"}]},"item_5_text_8":{"attribute_name":"報告書番号","attribute_value_mlt":[{"subitem_text_value":"NIFS-283"}]},"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":"\"Mitarai,  O.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sudo,  S.\"","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ignition characteristics","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"D-T Helical Reactor","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"density limit","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":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"Ignition Characteristics in D-T Helical Reactors","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Ignition Characteristics in D-T Helical Reactors","subitem_title_language":"en"}]},"item_type_id":"5","owner":"3","path":["32"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-02-05"},"publish_date":"2010-02-05","publish_status":"0","recid":"9947","relation_version_is_last":true,"title":["Ignition Characteristics in D-T Helical Reactors"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-06-20T20:55:08.778276+00:00"}