{"_buckets": {"deposit": "9e29b5b3-ea22-417c-991a-13baf448ff11"}, "_deposit": {"created_by": 1, "id": "85881", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "85881"}, "status": "published"}, "_oai": {"id": "oai:repo.qst.go.jp:00085881", "sets": ["2"]}, "author_link": ["1036697", "1036698"], "item_10003_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2021-10", "bibliographicIssueDateType": "Issued"}, "bibliographic_titles": [{"bibliographic_title": "Proceedings of the 18th Annual Meeting of Particle Accelerator Society of Japan"}]}]}, "item_10003_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "In a free-electron laser oscillator, when the electron bunch length, slippage length, gain, optical cavity loss and detuning\nlength satisfy certain conditions, ultra-short pulses containing only a few cycles of the optical electric field are generated.\nSuch lasing is explained by superradiance FEL. Superradiance was first theoretically derived by Robert Dicke in the\ncontext of the transition of atoms or molecules in a two-level system, and later experimentally confirmed. The\nsuperradiance in FEL was theoretically studied by Rodolf Bonifacio et al. and many experiments have been conducted.\nIn the present study, we review the principle of superradiance in a two-level system and a FEL and discuss the similarities\nand differences between them.", "subitem_description_type": "Abstract"}]}, "item_10003_relation_17": {"attribute_name": "関連サイト", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "https://www.pasj.jp/web_publish/pasj2021/proceedings/PDF/WEP0/WEP049.pdf", "subitem_relation_type_select": "URI"}}]}, "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": "1036697", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Ryoichi, Hajima", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "1036698", "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 paper", "resourceuri": "http://purl.org/coar/resource_type/c_5794"}]}, "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": "10003", "owner": "1", "path": ["2"], "permalink_uri": "https://repo.qst.go.jp/records/85881", "pubdate": {"attribute_name": "公開日", "attribute_value": "2022-04-07"}, "publish_date": "2022-04-07", "publish_status": "0", "recid": "85881", "relation": {}, "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_shared_id": -1}