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Bright betatron radiation from direct-laseraccelerated electrons at moderate relativistic laser intensity

Matter and Radiation at Extremes 2021年第4期6卷 10-17页

作者： O.N.Rosmej X.f.Shen A.Pukhov L.Antonelli f.barbato M.Gyrdymov M.M.Gunther S.Zahter V.S.Popov N.G.Borisenko N.E.Andreev GSI Helmholtzzentrum fur Schwerionenforschung GmbH Planckstraße164291 DarmstadtGermany Goethe University FrankfurtMax-von-Laue-Straße 160438 Frankfurt am MainGermany Helmholtz forschungsakademie Hessen fur fAIR(HfHf) Campus Frankfurt am MainMax-von-Laue-Straße 1260438 Frankfurt am MainGermany Heinrich-Heine-University Dusseldorf Universitatsstraße 1DusseldorfGermany York Plasma Institute University of YorkChurch LaneHeslingtonYork YO105DQUnited Kingdom University of Bordeaux CNRSCEACELIAUMR 5107F-33405 TalenceFrance Joint Institute for High Temperatures RASIzhorskaya St.13Bldg.2125412 MoscowRussia Moscow Institute of Physics and Technology(State University) Institutskiy Pereulok 9141700 DolgoprudnyMoscow RegionRussia P.N.Lebedev Physical Institute RASLeninsky Prospekt 53119991 MoscowRussia

Direct laser acceleration(DLA)of electrons in a plasma of near-critical electron density(NCD)and the associated synchrotron-like radiation are discussed for moderate relativistic laser intensity(normalized laser amplitude a0≤4.3)and ps length *** regime is typical of kJ PW-class laser facilities designed for high-energy-density(HED)*** experiments at the PHELIX facility,it has been demonstrated that interaction of a 1019 W/cm2 sub-ps laser pulse with a sub-mm length NCD plasma results in the generation of high-current well-directed superponderomotive electrons with an effective temperature ten times higher than the ponderomotive potential[Rosmej et al.,Plasma *** fusion 62,115024(2020)].Three-dimensional particle-in-cell simulations provide good agreement with the measured electron energy distribution and are used in the current work to study synchrotron radiation from the DLA-accelerated *** resulting x-ray spectrum with a critical energy of 5 keV reveals an ultrahigh photon number of 731011 in the 1–30 keV photon energy range at the focused laser energy of 20 *** simulations of betatron x-ray phase contrast imaging based on the DLA process for the parameters of a PHELIX laser are *** results are of interest for applications in HED experiments,which require a ps x-ray pulse and a high photon flux.

关键词： intensity relativistic critical

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Time evolution of stimulated Raman scattering and two-plasmon decay at laser intensities relevant for shock ignition in a hot plasma

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High Power Laser Science and Engineering 2019年第3期7卷 142-155页

作者： G.Cristoforetti L.Antonelli D.Mancelli S.Atzeni f.Baffigi f.barbato D.Batani G.Boutoux f.D'Amato J.Dostal R.Dudzak E.filippov Y.J.Gu L.Juha O.Klimo M.Krus S.Malko A.S.Martynenko Ph.Nicolai V.Ospina S.Pikuz O.Renner J.Santos V.T.Tikhonchuk J.Trela S.Viciani L.Volpe S.Weber L.A.Gizzi National Institute of Optics CNRPisa and FlorenceItaly York Plasma Physics Institute University of YorkHe slingtonYorkUK Universite de Bordeaux CNRSCEACELIATalenceFrance Donostia International Physics Center(DiPC) Donostia/San SebastianBasque CountrySpain Dipartimento SBAI Universita di Roma La SapienzaRomaItaly National Research Nuclear University MEPhl MoscowRussia CEA DAMDIFArpajonFrance Department of Radiation and Chemical Physics Institute of Physics of the CASPragueCzech Republic Laser Plasma Department Institute of Plasma Physics of the CASPragueCzech Republic Joint Institute for High Temperature RAS MoscowRussia ELI-Beamlines Institute of Physics of the CASPragueCzech Republic fNSPE Czech Technical University in PraguePragueCzech Republic Universidad de Salamanca Ctr Laseres PulsadosSalamancaSpain Centro de Laseres Pulsados(CLPU) VillamayorSalamancaSpain

Laser–plasma interaction(LPI)at intensities 1015–1016 W·cm^-2 is dominated by parametric instabilities which can be responsible for a significant amount of non-collisional absorption and generate large fluxes of high-energy nonthermal *** a regime is of paramount importance for inertial confinement fusion(ICf)and in particular for the shock ignition *** this paper we report on an experiment carried out at the Prague Asterix Laser System(PALS)facility to investigate the extent and time history of stimulated Raman scattering(SRS)and two-plasmon decay(TPD)instabilities,driven by the interaction of an infrared laser pulse at an intensity^1.2×1016 W·cm^-2 with a^100μm scalelength plasma produced from irradiation of a flat plastic *** laser pulse duration(300 ps)and the high value of plasma temperature(~4 ke V)expected from hydrodynamic simulations make these results interesting for a deeper understanding of LPI in shock ignition *** results show that absolute TPD/SRS,driven at a quarter of the critical density,and convective SRS,driven at lower plasma densities,are well separated in time,with absolute instabilities driven at early times of interaction and convective backward SRS emerging at the laser peak and persisting all over the tail of the ***-scattering SRS,driven at low plasma densities,is also clearly *** results are compared to fully kinetic large-scale,two-dimensional ***-in-cell results,beyond reproducing the framework delineated by the experimental measurements,reveal the importance of filamentation instability in ruling the onset of SRS and stimulated Brillouin scattering instabilities and confirm the crucial role of collisionless absorption in the LPI energy balance.

关键词： plasma simulations shock ignition stimulated Raman scattering two-plasmon decay

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循环血瘦素水平可预测中年男性中代谢综合征的发展:一项8年随访研究

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世界核心医学期刊文摘（心脏病学分册） 2007年第12期3卷 61-62页

作者： Galletti f. barbato A. Versiero M. 奚群英 Department of Clinical and Experimental Medicine 'Federico II' University of Naples Medical School Via S. Pansini 5 80131 Naples ItalyDr

背景:高循环血浆瘦素水平与一些代谢综合征(MS)的特征相关,如腹型肥胖、胰岛素抵抗和高血压BP)。在一项针对Olivetti心脏研究(OHS)成年男性参与者的前瞻性调查研究中,作者分析了血浆瘦素水平对MS的发生风险的预测能力。方法和结果:在199... 详细信息

背景:高循环血浆瘦素水平与一些代谢综合征(MS)的特征相关,如腹型肥胖、胰岛素抵抗和高血压BP)。在一项针对Olivetti心脏研究(OHS)成年男性参与者的前瞻性调查研究中,作者分析了血浆瘦素水平对MS的发生风险的预测能力。方法和结果:在1994—1995年及2002—2004年进行的OHS检查中有907例男性参与者,其中的360例(基线平均年龄50.4岁,

关键词：血浆瘦素 MS 高血压成年男性 IfG 混杂因素

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经皮冠状动脉血管重建术时的血压水平与冠状动脉支架内再狭窄的风险

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中华高血压杂志 2016年第7期24卷 698-698页

作者： Tocci G barbato E Coluccia R Modestino A Pagliaro B Mastromarino V Giovannelli f Berni A Volpe M 陈云叶鹏

血压水平增高使进行过经皮冠状动脉介入治疗（percutaneous coronary interventions,PCI）的患者10年内心血管病和死亡率的风险处于很高危的水平。该研究目的是探讨患者PCI时血压水平对今后发生支架内再狭窄（in stent restenosis,ISR... 详细信息

血压水平增高使进行过经皮冠状动脉介入治疗（percutaneous coronary interventions,PCI）的患者10年内心血管病和死亡率的风险处于很高危的水平。该研究目的是探讨患者PCI时血压水平对今后发生支架内再狭窄（in stent restenosis,ISR）风险的作用。方法：回顾性分析行PCI的患者796例,

关键词：支架内再狭窄 restenosis stent 可逆性心肌缺血心血管病介入治疗药物洗脱支架 eluting 血管造影内直径

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