{"created":"2023-05-15T14:55:59.397756+00:00","id":76035,"links":{},"metadata":{"_buckets":{"deposit":"9d140327-14b2-44c1-af70-28429fbf740b"},"_deposit":{"created_by":1,"id":"76035","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"76035"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00076035","sets":["10:29"]},"author_link":["762400","762399"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-06-12","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"State-of-the-art high power laser facilities present numerous potential applications, including the generation of ultra-short and low emittance ion beams. Understanding the underlying laser-plasma interaction physics and resulting scaling to ultra-high intensities is of great importance for optimising such sources. We therefore present experimental data of proton acceleration in a sheath field using the ultra-high intensity J-KAREN-P laser (10 J, 40 fs, 5x1021 W/cm2), allowing investigation at the high-intensity frontier.\nA repetitive tape target was used to generate proton beams at a 0.1 Hz repetition rate limited only by the laser, allowing a systematic and comprehensive scan over laser parameters. Our laser-target system is able to regularly produce protons in excess of 40 MeV at the full repetition rate. We will demonstrate a slower than expected increase in proton energy with decreasing focal spot size, show that this is due to a reduced sheath lifetime for tight focal spots, and propose a new model which successfully predicts proton energies over a large range of focal spot sizes.","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":"OPTO2019","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":"ドーバー, ニコラス ピーター"}],"nameIdentifiers":[{"nameIdentifier":"762399","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Dover, NicholasPeter","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"762400","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":"Effect of small focus on electron heating and proton acceleration in ultra-relativistic laser-solid interactions","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Effect of small focus on electron heating and proton acceleration in ultra-relativistic laser-solid interactions"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-05-29"},"publish_date":"2019-05-29","publish_status":"0","recid":"76035","relation_version_is_last":true,"title":["Effect of small focus on electron heating and proton acceleration in ultra-relativistic laser-solid interactions"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-16T00:41:20.034308+00:00"}