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Fast magnetic energy dissipation in relativistic plasma induced by high order laser modes

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High Power Laser Science and Engineering 2016年第2期4卷 85-89页

作者： Y.J.Gu Q.Yu O.klimo T.Zh.Esirkepov S.V.Bulanov S.Weber G.Korn Institute of Physics of the ASCR Institute of Modern Physics Fudan University FNSPE Czech Technical University in Prague Kansai Photon Science Institute Japan Atomic Energy Agency

Fast magnetic field annihilation in a collisionless plasma is induced by using TEM(1,0) laser pulse. The magnetic quadrupole structure formation, expansion and annihilation stages are demonstrated with 2.5-dimensional particle-in-cell simulations. The magnetic field energy is converted to the electric field and accelerate the particles inside the annihilation plane. A bunch of high energy electrons moving backwards is detected in the current sheet. The strong displacement current is the dominant contribution which induces the longitudinal inductive electric field.

关键词： high order laser mode laser–plasma interaction magnetic annihilation

Gamma photons and electron-positron pairs from ultra-intense laser-matter interaction: A comparative study of proposed configurations

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Matter and Radiation at Extremes 2019年第6期4卷 37-43页

作者： Yan-Jun Gu Martin Jirka ond.ej klimo Stefan Weber Institute of Physics of the ASCR ELI-BeamlinesNa Slovance 218221 PragueCzech Republic Institute of Plasma Physics of the CAS Za Slovankou 1782/318200 PragueCzech Republic FNSPE Czech Technical University in Prague11519 PragueCzech Republic School of Science Xi’an Jiaotong UniversityXi’an 710049 China

High-energyγ-photon generation via nonlinear Compton scattering and electron–positron pair creation via the Breit–Wheeler process driven by laser–plasma interaction are modeled,and a number of mechanisms are *** to the small cross section,these processes require both an ultra-intense laser field and a relativistic electron *** extreme conditions for such scenarios can be achieved through recent developments in laser *** emission via nonlinear Thomson and Compton scattering has been observed *** positron beams generated via a multiphoton process have recently been observed *** paper reviews the principles ofγ-ray emission and e+e−pair creation in the context of laser–plasma *** proposed experimental setups forγ-ray emission and e+e−pair creation by ultra-intense laser pulses are compared in terms of their efficiency and the quality of theγ-photon and positron beams produced for ultrashort(15 fs)and longer(150 fs)multi-petawatt laser beams.

关键词： interaction. positron intense

Studies of laser-plasma interaction physics with low-density targets for direct-drive inertial confinement schemes

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Matter and Radiation at Extremes 2019年第4期4卷 15-22页

作者： V.Tikhonchuk Y.J.Gu O.klimo J.Limpouch S.Weber ELI-Beamlines Institute of PhysicsAcademy of Sciences of the Czech Republic18221 PragueCzech Republic Centre Lasers Intenses et Applications University of Bordeaux–CNRS–CEATalence 33405France Institute of Plasma Physics of the CAS Za Slovankou 1782/318200 PragueCzech Republic FNSPE Czech Technical University in Prague11519 PragueCzech Republic

Comprehensive understanding and possible control of parametric instabilities in the context of inertial confinement fusion (ICF) remains achallenging task. The details of the absorption processes and the detrimental effects of hot electrons on the implosion process require as mucheffort on the experimental side as on the theoretical and simulation side. This paper describes a proposal for experimental studies on nonlinearinteraction of intense laser pulses with a high-temperature plasma under conditions corresponding to direct-drive ICF schemes. We propose todevelop a platform for laser-plasma interaction studies based on foam targets. Parametric instabilities are sensitive to the bulk plasma temperatureand the density scale length. Foam targets are sufficiently flexible to allow control of these parameters. However, investigationsconducted on small laser facilities cannot be extrapolated in a reliable way to real fusion conditions. It is therefore necessary to performexperiments at a multi-kilojoule energy level on medium-scale facilities such asOMEGAor SG-III. An example of two-plasmon decay instabilityexcited in the interaction of two laser beams is considered.

关键词： interaction details excited

Collective absorption of laser radiation in plasma at sub-relativistic intensities

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High Power Laser Science and Engineering 2019年第3期7卷 27-36页

作者： Y.J.Gu O.klimo Ph.Nicolai S.Shekhanov S.Weber V.T.Tikhonchuk ELI-Beamlines Institute of PhysicsCzech Academy of Sciences25241 Dolni BrezanyCzech Republic Institute of Plasma Physics of the CAS Za Slovankou 1782/318200 PragueCzech Republic Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague11519 PragueCzech Republic Centre of Intense Lasers and Applications University of BordeauxCNRSCEA33405 TalenceFrance School of Science Xi'an Jiaotong UniversityXi'an 710049China

Processes of laser energy absorption and electron heating in an expanding plasma in the range of irradiances Iλ^2=1015–1016 W·μm^2/cm^2 are studied with the aid of kinetic *** results show a strong reflection due to stimulated Brillouin scattering and a significant collisionless absorption related to stimulated Raman scattering near and below the quarter critical *** presented are parametric decay instability and resonant excitation of plasma waves near the critical *** these processes result in the excitation of high-amplitude electron plasma waves and electron *** spectrum of scattered radiation is significantly modified by secondary parametric processes,which provide information on the spatial localization of nonlinear absorption and hot electron *** considered domain of laser and plasma parameters is relevant for the shock ignition scheme of inertial confinement fusion.

关键词： inertial confinement fusion parametric instabilities

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

Innovative Education and Training in high power laser plasmas(PowerLaPs) for plasma physics, high power laser-matter interactions and high energy density physics-theory and experiments

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High Power Laser Science and Engineering 2019年第2期7卷 22-26页

作者： John Pasley Georgia Andrianaki Andreas Baroutsos Dimitri Batani Emmanouil P.Benis Marco Borghesi Eugene Clark Donna Cook Emmanuel D'Humieres Vasilios Dimitriou Brendan Dromey Michael Ehret Ioannis Fitilis Anastasios Grigoriadis Satya Kar Evaggelos Kaselouris ond.ej klimo Michel Koenig Kyriaki Kosma George Koundourakis Milan Kucharik Aveen Lavery Jiri Limpouch Yannis Orphanos Nektarios A.Papadogiannis Stelios Petrakis Dave Riley Maria Serena Rivetta Laura Tejada Pascual Joao Jorge Santos Alexandros Skoulakis Ioannis Tazes Vladimir Tikhonchuk Jocelain Trela Calliope Tsitou Luca Volpe Steven White Mark Yeung Michael Tatarakis York Plasma Institute University of York Technological Educational Institute of Crete School of Applied SciencesCentre for Plasma Physics and Lasers-CPPL Universitéde Bordeaux CNRSCEACELIA(Centre Lasers Intenses et Applications) Department of Physics University of Ioannina Centre for Plasma Physics School of Mathematics and PhysicsQueen’s University Belfast Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague LULI-CNRS Ecole Polytechnique CEA:UniversitéParis-Saclay UPMC Univ Paris 06:Sorbonne Universités CLPU Laser-Plasma Chair University of Salamanca Centro de Láseres Pulsados(CLPU) Edificio M5.Parque Cientfico.C/Adaja

The Erasmus Plus programme’Innovative Education and Training in high power laser plasmas’,otherwise known as PowerLaPs,is *** PowerLaPs programme employs an innovative paradigm in that it is a multi-centre programme where teaching takes place in five separate institutes with a range of different aims and styles of *** ’in class’ time is limited to four weeks a year,and the programme spans two *** aims to train students from across Europe in theoretical,applied and laboratory skills relevant to the pursuit of research in laserplasma interaction physics and inertial confinement fusion(ICF).Lectures are intermingled with laboratory sessions and continuous assessment *** programme,which is led by workers from the Technological Educational Institute(TEI)of Crete,and supported by co-workers from the Queen’s University Belfast,the University of Bordeaux,the Czech Technical-University in Prague,Ecole Polytechnique,the University of Ioannina,the University of Salamanca and the University of York,has just completed its first *** far three Learning Teaching Training(LTT)activities have been held,at the Queen’s University Belfast,the University of Bordeaux and the Centre for Plasma Physics and Lasers(CPPL)of TEI *** last of these was a two-week long Intensive Programme(IP),while the activities at the other two universities were each five days in *** far work has concentrated upon training in both theoretical and experimental work in plasma physics,high power laser-matter interactions and high energy density *** nature of the programme will be described in detail and some metrics relating to the activities carried out to date will be presented.

关键词： higher education inertial confinement fusion laser-plasma interactions post-graduate education

Innovative education and training in high power laser plasmas(PowerLaPs) for plasma physics, high power laser matter interactions and high energy density physics: experimental diagnostics and simulations

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High Power Laser Science and Engineering 2020年第1期8卷 30-36页

作者： John Pasley Georgia Andrianaki Andreas Baroutsos Dimitri Batani Emmanouil PBenis Andrea Ciardi Donna Cook Vasilios Dimitriou Brendan Dromey Ioannis Fitilis Giancarlo Gatti Anastasios Grigoriadis Marine Huault Jose Antonio Pérez Hernández Evaggelos Kaselouris ond.ej klimo Michel Koenig George Koundourakis Milan Kucharik Jiri Limpouch Richard Liska Carlos Salgado Lopez Sophia Malko Susana Olmos-Miguelanez Yannis Orphanos Valeria Ospina Nektarios APapadogiannis Stelios Petrakis Jan Psikal Maria Serena Rivetta Maria-ose Rodriguez-Conde Joao Jorge Santos Milan Sinor Alexandros Skoulakis Ioannis Tazes Laura Tejada Pascual Calliope Tsitou Pavel Vachal Luca Volpe Jiri Vyskocil Steven White Mark Yeung Ghassan Zerouli Michael Tatarakis York Plasma Institute University of YorkHeslingtonYork YO105DQUK Hellenic Mediterranean University Institute of Plasma Physics and Lasers-IPPL74100 Rethymnon73133 ChaniaCreteGreece University of Bordeaux CNRSCEACELIA(Centre Lasers Intenses et Applications)UMR 5107F-33405 TalenceFrance Department of Physics University of IoanninaGR 45110 IoanninaGreece LULI-CNRS CEASorbonne UniversiesEcole PolytechniqueInstitut Polytechnique de Paris-F-91128 Palaiseau CedexFrance Observatoire de Paris 5 Place J JanssenMeudon 92195France Centre for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastBelfast BT71NNUK Centro de Láseres Pulsados(CLPU) Edificio M5Parque CientficoC/Adaja 837185 VillamayorSalamancaSpain University of Salamanca 37008 SalamancaSpain Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in PragueBrehova 711519Prague 1Czech Republic University Institute for Educational Sciences University of Salamanca37008 SalamancaSpain Group of Research“Interaction and e Learning”(GRIAL) University of Salamanca37008 SalamancaSpain CLPU Laser-Plasma Chair at University of Salamanca 37008 SalamancaSpain

The second and final year of the Erasmus Plus programme’Innovative Education and Training in high power laser plasmas’,otherwise known as PowerLaPs,is *** PowerLaPs programme employs an innovative paradigm in that it is a multi-centre programme,where teaching takes place in five separate institutes with a range of different aims and styles of ***’in-class’time is limited to 4 weeks a year,and the programme spans 2 *** aims to train students from across Europe in theoretical,applied and laboratory skills relevant to the pursuit of research in laser plasma interaction physics and inertial confinement *** are intermingled with laboratory sessions and continuous assessment *** programme,which is led by workers from the Hellenic Mediterranean University and supported by co-workers from the Queen’s University Belfast,the University of Bordeaux,the Czech Technical University in Prague,Ecole Polytechnique,the University of Ioannina,the University of Salamanca and the University of York,has just finished its second and final *** Learning Teaching Training activities have been held at the Queen’s University Belfast,the University of Bordeaux,the Czech Technical University,the University of Salamanca and the Institute of Plasma Physics and Lasers of the Hellenic Mediterranean *** last of these institutes hosted two 2-week-long Intensive Programmes,while the activities at the other four universities were each 5 days in *** addition,a’Multiplier Event’was held at the University of Ioannina,which will be briefly *** this second year,the work has concentrated on training in both experimental diagnostics and simulation techniques appropriate to the study of plasma physics,high power laser matter interactions and high energy density *** nature of the programme will be described in detail,and some metrics relating to the activities carried out will be *** particular,this paper will f

关键词： laser plasma interactions postgraduate education

P3: An installation for high-energy density plasma physics and ultra-high intensity laserematter interaction at ELI-Beamlines

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Matter and Radiation at Extremes 2017年第4期2卷 149-176页

作者： S.Weber S.Bechet S.Borneis L.Brabec M.Bucka E.Chacon-Golcher M.Ciappina M.DeMarco A.Fajstavr K.Falk E.-R.Garcia J.Grosz Y.-J.Gu J.-C.Hernandez M.Holec P.Janecka M.Jantac M.Jirka H.Kadlecova D.Khikhlukha O.klimo G.Korn D.Kramer D.Kumar T.Lastovicka P.Lutoslawski L.Morejon V.Olsovcova M.Rajdl O.Renner B.Rus S.Singh M.Smid M.Sokol R.Versaci R.Vrana M.Vranic J.Vyskocil A.Wolf Q.Yu ELI-Beamlines Institute of PhysicsAcademy of Sciences of the Czech Republic18221 PragueCzech Republic

ELI-Beamlines(ELI-BL),one of the three pillars of the Extreme Light Infrastructure endeavour,will be in a unique position to perform research in high-energy-density-physics(HEDP),plasma physics and ultra-high intensity(UHI)ð>10^(22) W=cm^(2)) lasereplasma *** the need for HED laboratory physics was identified and the P3(plasma physics platform)installation under construction in ELI-BL will be an *** ELI-BL 10 PW laser makes possible fundamental research topics from high-field physics to new extreme states of matter such as radiation-dominated ones,high-pressure quantum ones,warm dense matter(WDM)and ultra-relativistic *** is of fundamental importance for research in the field of laboratory astrophysics and inertial confinement fusion(ICF).Reaching such extreme states of matter now and in the future will depend on the use of plasma optics for amplifying and focusing laser *** article will present the relevant technological infrastructure being built in ELI-BL for HEDP and UHI,and gives a brief overview of some research under way in the field of UHI,laboratory astrophysics,ICF,WDM,and plasma optics.

关键词： High-energy-density-physics Ultra-high-intensity Warm dense matter Laboratory astrophysics High repetition rate lasers Plasma optics Inertial confinement fusion Lasereplasma interaction Relativistic plasmas