{"created":"2023-05-15T14:55:41.701871+00:00","id":75622,"links":{},"metadata":{"_buckets":{"deposit":"19adadc5-2e79-4c4e-abb7-6cd321154fce"},"_deposit":{"created_by":1,"id":"75622","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"75622"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00075622","sets":["10:29"]},"author_link":["766532","766531","766534","766516","766525","766526","766527","766521","766515","766522","766517","766514","766518","766519","766524","766528","766533","766520","766513","766523","766529","766530"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-04-24","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Laser wakefield acceleration  (LWFA) [1] has been studied intensively in the past decades. With the optimization of chirped pulse amplification technology (CPA) [2], high quality electron beams with energies over GeV [3] have been generated. The ultrahigh acceleration gradient allows for the construction of a table top x-ray free electron laser [4]. To achieve lasing in the x-ray wavelength range, GeV class electron beam with high brightness is necessary.\nWe succeeded generating highly collimated quasi-monoenergetic electron beams with peak energies up to GeV via ionization-injection [5, 6] using the J-KAREN-P laser. By incident of 300 TW laser pulses into a 10 mm gas jet, comparison studies were performed with pure (He), (He:Ne) mixture and (He:N2) mixture gases. We observed that the divergences, energies and charges of electron beams have dependences on gas species and mixture ratios. The smallest divergence of electron beams from (He:Ne) was merely 0.18 mrad (rms), which was 5 times smaller than that from (He:N2) gas. For many shots, we got extremely high charge electron bunches at plasma denties lower than the self-injection threshold. This study shows the capabilities of the ionization injection regime manipulate and optimize the qualities of the GeV class electron beams from laser wakefield acceleration.\n","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":"HEDS2019","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":"黄, 開"}],"nameIdentifiers":[{"nameIdentifier":"766513","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Neagu, Liviu"}],"nameIdentifiers":[{"nameIdentifier":"766514","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakamiya, Yoshihide"}],"nameIdentifiers":[{"nameIdentifier":"766515","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Rotaru, Florin"}],"nameIdentifiers":[{"nameIdentifier":"766516","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Secareanu, Radu"}],"nameIdentifiers":[{"nameIdentifier":"766517","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Cuciuc, Mihai"}],"nameIdentifiers":[{"nameIdentifier":"766518","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matei, Dan"}],"nameIdentifiers":[{"nameIdentifier":"766519","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Pirozhkov, Alexander"}],"nameIdentifiers":[{"nameIdentifier":"766520","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Bierwage, Andreas"}],"nameIdentifiers":[{"nameIdentifier":"766521","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ogura, Koichi"}],"nameIdentifiers":[{"nameIdentifier":"766522","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagisaka, Akito"}],"nameIdentifiers":[{"nameIdentifier":"766523","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakanii, Nobuhiko"}],"nameIdentifiers":[{"nameIdentifier":"766524","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kiriyama, Hiromitsu"}],"nameIdentifiers":[{"nameIdentifier":"766525","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"神門, 正城"}],"nameIdentifiers":[{"nameIdentifier":"766526","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"HUANG, KAI","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766527","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Pirozhkov, Alexander","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766528","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Bierwage, Andreas","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766529","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ogura, Koichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766530","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagisaka, Akito","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766531","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakanii, Nobuhiko","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766532","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kiriyama, Hiromitsu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766533","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kando, Masaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766534","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":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Highly collimated high charge GeV electron beam from laser wakefield acceleration via ionization injection","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Highly collimated high charge GeV electron beam from laser wakefield acceleration via ionization injection"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-04-17"},"publish_date":"2019-04-17","publish_status":"0","recid":"75622","relation_version_is_last":true,"title":["Highly collimated high charge GeV electron beam from laser wakefield acceleration via ionization injection"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-16T00:34:57.999164+00:00"}