{"created":"2023-05-15T15:00:00.697243+00:00","id":81438,"links":{},"metadata":{"_buckets":{"deposit":"2a00f6d3-61de-4b9b-a17a-6b991ef7bf96"},"_deposit":{"created_by":1,"id":"81438","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"81438"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00081438","sets":["10:29"]},"author_link":["912567","912548","912539","912546","912564","912565","912528","912530","912562","912559","912522","912538","912543","912551","912570","912575","912556","912547","912549","912521","912552","912576","912558","912574","912532","912569","912571","912517","912518","912523","912544","912535","912541","912527","912561","912533","912555","912520","912537","912524","912572","912568","912557","912573","912550","912566","912534","912563","912531","912542","912545","912554","912519","912540","912525","912536","912529","912553","912526","912560"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2020-04-23","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Efficient generation of ~MeV x-rays in the Gamma Flare regime [1],[2] in\npreplasma via the nonlinear Thomson/inverse Compton scattering mechanism\n[3] is one of the most promising and expected high-power laser\napplications. The hard x-rays are generated by Bremsstrahlung as well,\nwhile the electrons go through the target [4],[5], which also includes\nmultiple passes (refluxing) [5],[6]. Simulations predict that at high\nintensities the preplasma x-rays dominate; however, at intensities\navailable now, Bremsstrahlung dominates, so that the Gamma Flare\nmechanism is not yet demonstrated experimentally.\nWe describe our experiment performed with the J-KAREN-P laser [7]-[9],\nwith the emphasis on data from the scintillator-based hard x-ray\nspectrographs [10] (0.1 – 1 MeV) and Compton spectrograph [11] (2 – 10\nMeV), and our efforts to distinguish the generation mechanism.\nWe thank the J-KAREN-P laser operation group. We acknowledge financial\nsupport from ELI-Beamlines, JSPS JP 19H00669, and QST Director Funds 創\n成的研究 16 and 創成的研究 20.\n[1]     T. Nakamura, et al., \"High-Power γ-Ray Flash Generation in\nUltraintense Laser-Plasma Interactions,\" Phys. Rev. Lett. 108, 195001 (\n2012).\n[2]     C. P. Ridgers, et al., \"Dense Electron-Positron Plasmas and\nUltraintense γ rays from Laser-Irradiated Solids,\" Phys. Rev. Lett. 108,\n165006 (2012).\n[3]     K. V. Lezhnin, P. V. Sasorov, G. Korn, and S. V. Bulanov, \"High\npower gamma flare generation in multi-petawatt laser interaction with\ntailored targets,\" Phys. Plasmas 25, 123105 (2018).\n[4]     D. Wu, et al., \"Characteristics of X/γ-ray radiations by intense\nlaser interactions with high-Z solids: The role of bremsstrahlung and\nradiation reactions,\" Matter Rad. Extremes 3, 293-299 (2018).\n[5]     J. Vyskočil, O. Klimo, S. Weber, \"Simulations of bremsstrahlung\nemission in ultra-intense laser interactions with foil targets,\" Plasma\nPhys. Control. Fusion 60, 054013 (2018).\n[6]     D. R. Rusby, et al., \"Effect of rear surface fields on hot,\nrefluxing and escaping electron populations via numerical simulations,\"\nHigh Pow. Las. Sci. Eng. 7, e45 (2019).\n[7]     A.S.Pirozhkov, et al., \"Approaching the diffraction-limited,\nbandwidth-limited Petawatt,\" Opt. Express 25, 20486 (2017).\n[8]     H. Kiriyama, et al., \"High-contrast high-intensity repetitive\npetawatt laser,\" Opt. Lett. 43, 2595 (2018).\n[9]     H. Kiriyama, et al., \"Experimental investigation on temporal\ncontrast of pre-pulses by post-pulses in a petawatt laser facility,\" Opt.\n Lett. (accepted).\n[10]    D. R. Rusby, et al., \"Novel scintillator-based x-ray spectrometer\nfor use on high repetition laser plasma interaction experiments,\" Rev.\nSci. Instr. 89, 073502 (2018).\n[11]    S. Singh, et al., \"Compact high energy x-ray spectrometer based on\nforward Compton scattering for high intensity laser plasma experiments,\"\nRev. Sci. Instr. 89, 085118 (2018).","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":"OPTICS & PHOTONICS International Congress 2020","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":"Pirozhkov, Alexander"}],"nameIdentifiers":[{"nameIdentifier":"912517","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ogura, Koichi"}],"nameIdentifiers":[{"nameIdentifier":"912518","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Armstrong, C."}],"nameIdentifiers":[{"nameIdentifier":"912519","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Neely, D."}],"nameIdentifiers":[{"nameIdentifier":"912520","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Timur, Esirkepov"}],"nameIdentifiers":[{"nameIdentifier":"912521","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagisaka, Akito"}],"nameIdentifiers":[{"nameIdentifier":"912522","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hayakawa, Takehito"}],"nameIdentifiers":[{"nameIdentifier":"912523","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yan, W."}],"nameIdentifiers":[{"nameIdentifier":"912524","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"M. Jeong, T."}],"nameIdentifiers":[{"nameIdentifier":"912525","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Singh, S."}],"nameIdentifiers":[{"nameIdentifier":"912526","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hadjisolomou, P."}],"nameIdentifiers":[{"nameIdentifier":"912527","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Finke, O."}],"nameIdentifiers":[{"nameIdentifier":"912528","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kumar, D."}],"nameIdentifiers":[{"nameIdentifier":"912529","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Grittani, G."}],"nameIdentifiers":[{"nameIdentifier":"912530","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nevrkla, M."}],"nameIdentifiers":[{"nameIdentifier":"912531","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Lazzarini, C."}],"nameIdentifiers":[{"nameIdentifier":"912532","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nejdl, J."}],"nameIdentifiers":[{"nameIdentifier":"912533","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Velyhan, A."}],"nameIdentifiers":[{"nameIdentifier":"912534","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"N. 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Pikuz, S."}],"nameIdentifiers":[{"nameIdentifier":"912541","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Gonzalez izquierdo, Bruno"}],"nameIdentifiers":[{"nameIdentifier":"912542","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuda, Yuuji"}],"nameIdentifiers":[{"nameIdentifier":"912543","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kevin Koga, James"}],"nameIdentifiers":[{"nameIdentifier":"912544","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ishino, Masahiko"}],"nameIdentifiers":[{"nameIdentifier":"912545","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, Kotaro"}],"nameIdentifiers":[{"nameIdentifier":"912546","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Miyasaka, Yasuhiro"}],"nameIdentifiers":[{"nameIdentifier":"912547","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kon, 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G."}],"nameIdentifiers":[{"nameIdentifier":"912555","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, Kiminori"}],"nameIdentifiers":[{"nameIdentifier":"912556","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Bulanov, Sergey"}],"nameIdentifiers":[{"nameIdentifier":"912557","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kawachi, Tetsuya"}],"nameIdentifiers":[{"nameIdentifier":"912558","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Pirozhkov, Alexander","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912559","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ogura, Koichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912560","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Timur, Esirkepov","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912561","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sagisaka, Akito","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912562","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hayakawa, Takehito","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912563","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Gonzalez izquierdo, Bruno","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912564","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuda, Yuuji","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912565","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kevin Koga, James","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912566","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ishino, Masahiko","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912567","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kondo, 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W/cm^2"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-12-25"},"publish_date":"2020-12-25","publish_status":"0","recid":"81438","relation_version_is_last":true,"title":["Hard x-ray generation at intensity approaching 10^22 W/cm^2"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:01:46.337703+00:00"}