{"created":"2023-05-15T14:55:40.514687+00:00","id":75594,"links":{},"metadata":{"_buckets":{"deposit":"03c151e7-9903-4e0d-a743-26018ac89ca6"},"_deposit":{"created_by":1,"id":"75594","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"75594"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00075594","sets":["10:29"]},"author_link":["766416","766434","766425","766431","766429","766427","766424","766432","766428","766418","766436","766423","766439","766420","766438","766437","766433","766421","766422","766419","766440","766441","766426","766442","766413","766430","766435","766415","766414","766417"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-05-06","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The interaction of relativistically intense short pulse (~few tens of fs) laser pulse with solid material\ngenerates quasi-static electric fields with strengths of > TV/m are produced within a short\ndistance of less than m [1]. Thanks to the very strong field gradient, the field can accelerate\nions beyond MeV within a micron. Unlike the acceleration of low-Z ions, acceleration of the\nhigh-Z ion is more complicated because charge state distribution should be controlled for pursuing\nhigher acceleration efficiency or for manipulating a spectral shape of the ions. However, all\nthe proposed laser-driven acceleration mechanisms, including the most investigated and easy to\nimplement mechanism, Target Normal Sheath Acceleration (TNSA) [2], are far from being fully\nunderstood in the sense of ionization mechanisms. To address this issue, we investigate the ionization\nmechanisms in HED plasma produced by a laser pulse of peak intensity ~5x1021 Wcm????2\ninteracting with a silver 500 nm target by using J-KAREN laser system KPSI, QST [3]. Even the\nJ-KAREN laser is high contrast laser system the pulses show not completely ideal (Gaussian-like)\ntemporal shape. The existence of the rising edge is an inherent feature of high power laser systems\nbased on highly non-linear processes and eliminating this rising edge is challenging, even when\napplying pulse cleaning techniques such as plasma mirrors and/or a plasma shutter. The rising\nedge interacts with target in advance to the main pulse and can prematurely expand the target\nresulting in reduction of proton cutoff energies. This is a serious barrier for not only proton acceleration,\nhowever we found this temporal shape can be a beneficial effect on heavy ion acceleration\nfrom the bulk of the target. In the experiment we observed that silver ions with a charge state of\n~ +40 are accelerated up to ~15 MeV/u with the particle number of (2±1)x106 ion/shot within an\nenergy range of 10-15 MeV/u. With the help of hydrodynamic, particle-in-cell (PIC) simulations\nand analytical estimates, we find out that the ions in the contaminant layer pre-expands and effectively\ndetaches from the target, still keeping the target material intact, so that the bulk ions\nare exposed to stronger sheath fields and accelerated to higher energies. The highly charged energetic\nsilver ions are generated via electron collisions in the hot (~6 keV electron temperature) solid\nplasma. The reported heavy ion acceleration mechanism is in unexplored physical regime, which\nhas been generated for the first time via interaction with a laser with an ultra-high intensity using\nthe state-of-the-art laser system J-KAREN.","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":"Laser-Plasma Accelerator Workshop 2019参加","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":"西内, 満美子"}],"nameIdentifiers":[{"nameIdentifier":"766413","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Dover, NicholasPeter"}],"nameIdentifiers":[{"nameIdentifier":"766414","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"畑昌育"}],"nameIdentifiers":[{"nameIdentifier":"766415","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sakaki, Hironao"}],"nameIdentifiers":[{"nameIdentifier":"766416","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, Kotaro"}],"nameIdentifiers":[{"nameIdentifier":"766417","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"宮原巧"}],"nameIdentifiers":[{"nameIdentifier":"766418","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kiriyama, Hiromitsu"}],"nameIdentifiers":[{"nameIdentifier":"766419","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kevin Koga, James"}],"nameIdentifiers":[{"nameIdentifier":"766420","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"岩田夏弥"}],"nameIdentifiers":[{"nameIdentifier":"766421","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Alkhimova, MARIYA,"}],"nameIdentifiers":[{"nameIdentifier":"766422","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Pirozhkov, Alexander"}],"nameIdentifiers":[{"nameIdentifier":"766423","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Anatory, FAENOV,"}],"nameIdentifiers":[{"nameIdentifier":"766424","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tatiana, PIKUZ,"}],"nameIdentifiers":[{"nameIdentifier":"766425","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagisaka, Akito"}],"nameIdentifiers":[{"nameIdentifier":"766426","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Watanabe, Yukinobu"}],"nameIdentifiers":[{"nameIdentifier":"766427","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kando, Masaki"}],"nameIdentifiers":[{"nameIdentifier":"766428","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, Kiminori"}],"nameIdentifiers":[{"nameIdentifier":"766429","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yasuhiko, Sentoku"}],"nameIdentifiers":[{"nameIdentifier":"766430","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishiuchi, Mamiko","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766431","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Dover, NicholasPeter","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766432","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sakaki, Hironao","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766433","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, Kotaro","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766434","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kiriyama, Hiromitsu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766435","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kevin Koga, James","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766436","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Pirozhkov, Alexander","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766437","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagisaka, Akito","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766438","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Watanabe, Yukinobu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766439","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kando, Masaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766440","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, Kiminori","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766441","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yasuhiko, Sentoku","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"766442","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 charged heavy ion acceleration from a high temperature solid heated by J-KAREN laser system","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Highly charged heavy ion acceleration from a high temperature solid heated by J-KAREN laser system"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-04-12"},"publish_date":"2019-04-12","publish_status":"0","recid":"75594","relation_version_is_last":true,"title":["Highly charged heavy ion acceleration from a high temperature solid heated by J-KAREN laser system"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-16T00:35:07.068935+00:00"}