{"created":"2023-05-15T15:03:23.737062+00:00","id":85880,"links":{},"metadata":{"_buckets":{"deposit":"faf5eea0-cde7-4369-a1ae-d338583d7899"},"_deposit":{"created_by":1,"id":"85880","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"85880"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00085880","sets":["10:28"]},"author_link":["1036695","1036696"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2021-08-09","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"共振器型自由電子レーザーでは、電子バンチ長、スリップ長、ゲイン、光共振器の損失とデチューニング長が一定の条件を満たす時、光の電場を数周期しか含まない極短パルスが生成される。このようなFEL発振は、超放射FEL（superradiance FEL）と呼ばれる現象で説明される。超放射は、二準位系における準位間の遷移確率を考察したRobert Dicke が理論的に導出し、その後、実験的に確認された現象である。超放射FELは、Rodolf Bonifacio らが、その存在を理論的に示し、これまでに多くの実験が行われてきた。本発表では、Dickeの超放射、超放射FELの原理、両者の類似点と相違点を述べ、極短パルスFEL発振の特長を明らかにする。本研究の一部は、文部科学省の光・量子飛躍フラッグシッププログラム（Q-LEAP、JPMXS0118070271）によるものである。","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"第18回日本加速器学会年会","subitem_description_type":"Other"}]},"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":"羽島, 良一"}],"nameIdentifiers":[{"nameIdentifier":"1036695","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ryoichi, Hajima","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1036696","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"共振器型自由電子レーザーにおける超放射","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"共振器型自由電子レーザーにおける超放射"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-05-20"},"publish_date":"2021-05-20","publish_status":"0","recid":"85880","relation_version_is_last":true,"title":["共振器型自由電子レーザーにおける超放射"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T17:31:34.969768+00:00"}