{"created":"2023-05-15T14:53:52.055264+00:00","id":73349,"links":{},"metadata":{"_buckets":{"deposit":"b2808b84-5f45-4052-8179-db9166e9a889"},"_deposit":{"created_by":1,"id":"73349","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"73349"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00073349","sets":["10:27"]},"author_link":["722616","722634","722639","722626","722638","722623","722631","722635","722621","722637","722642","722629","722644","722617","722640","722625","722641","722630","722632","722628","722618","722622","722643","722633","722624","722636","722619","722627","722620"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2018-10-11","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We have discovered a new regime of bright coherent x-ray generation by relativistic plasma singularities driven by a multi-terawatt femtosecond laser focused onto a gas jet target [1]-[3]. In this regime, the driving laser pulse propagates through the plasma, pushes electrons producing an electron-free cavity, and generates a bow wave [4]. The singularities are produced at the joining of the cavity wall and the bow wave and represent relativistically moving point-like coherent x-ray emitters. We have generalized this coherent radiation emission mechanism and discovered Burst Intensification by Singularity Emitting Radiation (BISER) [5].\n\\nIn previous experiments, BISER resulted from relativistic self-focusing, which is a laser beam instability. This spontaneous regime exhibited relatively large shot-to-shot fluctuations of the x-ray source position and low overall stability. However, stability is desirable for prospective applications of the new coherent x-ray source.\n\\nBasing on simulations with the Particle-In-Cell code REMP [6], we proposed to control the BISER with a tailored plasma density profile. We demonstrated this control for the first time in experiments with the J-KAREN-P laser [7]-[9] using a sharp density jump created by a blade in the supersonic gas flow. This resulted in controllable, low-jitter x-ray source position and higher x-ray yield.\n\\nOur results, on the one hand, represent an important step towards implementation of a next-generation bright compact coherent x-ray source, and on the other hand, demonstrate the new technique of relativistic self-focusing control and its diagnostics.\n\\nWe thank the J-KAREN-P laser operation group. We acknowledge the financial support from JSPS Kakenhi JP 25390135, JP 26707031, and the QST Director Fund.\n\\n[1]A. S. Pirozhkov, et al. \"Soft-X-Ray Harmonic Comb from Relativistic Electron Spikes,\" Phys. Rev. Lett. 108, 135004 (2012).\n[2]A. S. Pirozhkov, et al., \"High order harmonics from relativistic electron spikes,\" New J. Phys. 16, 093003 (2014).\n[3]T. Pikuz et al \"High performance imaging of relativistic soft X-ray harmonics by sub-micron resolution LiF film detectors\" Phys. Status Solidi C 9 2331 (2012)\n[4]T. Zh. Esirkepov, et al., \"Bow Wave from Ultraintense Electromagnetic Pulses in Plasmas,\" Phys. Rev. Lett. 101, 265001 (2008).\n[5]A. Pirozhkov, T. Esirkepov et al., \"Burst intensification by singularity emitting radiation in multi-stream flows,\" Sci. Rep. 7, 17968 (2017).\n[6]T. Esirkepov, \"Exact charge conservation scheme for PIC simulation with an arbitrary form-factor,\" CPC 135, 144 (2001).\n[7]H. Kiriyama, et al., \"High-Contrast, High-Intensity Petawatt-Class Laser and Applications,\" IEEE JSTQE 21, 1601118 (2015).\n[8]A. S. Pirozhkov, et al. \"Approaching the diffraction-limited, bandwidth-limited Petawatt,\" Opt. Express 25, 20486 (2017).\n[9]H. Kiriyama, et al., \"High-contrast high-intensity repetitive petawatt laser,\" Opt. Lett. 43, 2595 (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":"ICXRL 2018","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":"ピロジコフ, アレキサンダー"}],"nameIdentifiers":[{"nameIdentifier":"722616","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"エシロケポフ, ティムル"}],"nameIdentifiers":[{"nameIdentifier":"722617","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"匂坂, 明人"}],"nameIdentifiers":[{"nameIdentifier":"722618","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小倉, 浩一"}],"nameIdentifiers":[{"nameIdentifier":"722619","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"ゴンザレスイスケルド, ブルーノ"}],"nameIdentifiers":[{"nameIdentifier":"722620","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中新, 信彦"}],"nameIdentifiers":[{"nameIdentifier":"722621","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"黄, 開"}],"nameIdentifiers":[{"nameIdentifier":"722622","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"A, Pikuz T"}],"nameIdentifiers":[{"nameIdentifier":"722623","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"難波, 愼一"}],"nameIdentifiers":[{"nameIdentifier":"722624","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"福田, 祐仁"}],"nameIdentifiers":[{"nameIdentifier":"722625","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"コーガ, ジェームズ"}],"nameIdentifiers":[{"nameIdentifier":"722626","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"桐山, 博光"}],"nameIdentifiers":[{"nameIdentifier":"722627","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"近藤, 公伯"}],"nameIdentifiers":[{"nameIdentifier":"722628","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"河内, 哲哉"}],"nameIdentifiers":[{"nameIdentifier":"722629","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"神門, 正城"}],"nameIdentifiers":[{"nameIdentifier":"722630","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"ピロジコフ アレキサンダー","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722631","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"エシロケポフ ティムル","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722632","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"匂坂 明人","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722633","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小倉 浩一","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722634","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"ゴンザレスイスケルド ブルーノ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722635","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中新 信彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722636","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"黄 開","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722637","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"難波 愼一","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722638","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"福田 祐仁","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722639","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"コーガ ジェームズ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722640","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"桐山 博光","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722641","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"近藤 公伯","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722642","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"河内 哲哉","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722643","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"神門 正城","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"722644","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":"Control of Burst Intensification by Singularity Emitting Radiation","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Control of Burst Intensification by Singularity Emitting Radiation"}]},"item_type_id":"10005","owner":"1","path":["27"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-12-19"},"publish_date":"2018-12-19","publish_status":"0","recid":"73349","relation_version_is_last":true,"title":["Control of Burst Intensification by Singularity Emitting Radiation"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:30:17.294925+00:00"}