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Precise wavelength measurements of potassium He- and Li-like satellites emitted from the laser plasma of a mineral target

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matter and Radiation at Extremes 2021年第1期6卷 15-20页

作者： S.N.Ryazantsev I.Yu.Skobelev E.D.Filippov A.S.martynenko m.D.mishchenko m.krus O.Renner S.A.Pikuz National Research Nuclear University mEPhI(moscow Engineering Physics Institute) Kashirskoe Shosse 31115409 MoscowRussia Joint Institute for High Temperatures of the Russian Academy of Sciences Izhorskaya 13 Bldg 2125412 MoscowRussia Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences 46 Ulyanov Str.603950 Nizhny NovgorodRussia Laser Plasma Department Institute of Plasma Physics of the CASZa Slovankou 1782/3Libeˇn18200 PragueCzech Republic Department of Radiation and Chemical Physics Institute of Physics of the CASNa Slovance 1999/218221 PragueCzech Republic ELI-Beamlines Institute of Physics of the CASZa Radnici83525241 Dolni BiezanyCzech Republic

Atomic models of high-Zmulticharged ions are extremely complex and require experimental *** to do so is to crosscheck the predicted wavelengths of resonance transitions in He-and Li-like ions against precise spectroscopic measurements that use the spectral lines of H-like ions for spectra calibration;these reference data can be modeled with outstanding ***,for elements with Z of at least 15,it is quite difficult to create a hot dense plasma with a large concentration ofH-like charge *** mitigate this issue,the suggestion here is to use as laser targets particular minerals comprising elements with moderate(between 15 and 30)and low(less than 15)Z,with emission from the latter delivering perfect reference lines over a whole range o fHe-and Li-like moderate-Z emission under *** approach is implemented to measure the wavelengths of resonance transitions(1snp→1s^(2) for n=2,3)in He-likeKions and their dielectronic satellites by irradiating plates of orthoclase(KAlSi_(3)O_(8))with0.5-kJ subnanosecond laser pulses.X-ray spectra of the laser-generated plasma contain the investigated lines of highly charged K-ions together with precisely known reference lines of H-like Al and Si *** K-shell spectral line wavelengths are measured with a precision of around 0.3 mA.

关键词： laser potassium transitions

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Characterization of hot electrons generated by laser-plasma interaction at shock ignition intensities

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matter and Radiation at Extremes 2023年第6期8卷 74-89页

作者： E.D.Filippov m.Khan A.Tentori P.Gajdos A.S.martynenko R.Dudzak P.Koester G.Zeraouli D.mancelli F.Baffigi L.A.Gizzi S.A.Pikuz Ph.D.Nicolaï N.C.Woolsey R.Fedosejevs m.krus L.Juha D.Batani O.Renner G.Cristoforetti Joint Institute for High Temperatures RAS Moscow 125412Russia York Plasma Institute School of PhysicsEngineering and TechnologyUniversity of YorkYork YO105DDUnited Kingdom Universitéde Bordeaux CNRSCEACELIATalence 33405France Institute of Plasma Physics of the CAS PragueCzech Republic Plasma Physics Department GSI Helmholtzzentrum für Schwerionenforschung64291 DarmstadtGermany Institute of Physics of the CAS PragueCzech Republic Intense Laser Irradiation Laboratory INO-CNRPisa 56124Italy Centro de Laseres Pulsados(CLPU) Edicio M5Parque Científico.C Adaja8Salamanca 37185Spain Institute of Plasma Physics and Lasers-IPPL Centre of Research and InnovationHellenic Mediterranean UniversityRethymnonGreece Department of Electronic Engineering Hellenic Mediterranean UniversityChaniaGreece National Research Nuclear University mEPhI Moscow 115409Russia University of Alberta Edmonton T6G 2V4AlbertaCanada The Extreme Light Infrastructure ERIC ELI Beamlines FacilityDolníBˇrezanyCzech Republic

In an experiment carried out at the Prague Asterix Laser System at laser intensities relevant to shock ignition conditions(I>10^(16) W/cm^(2)),the heating and transport of hot electrons were studied by using several complementary diagnostics,i.e.,K_(α)time-resolved imaging,hard x-ray filtering(a bremsstrahlung cannon),and electron *** with differing composition from low Z(parylene N)to high Z(nickel)were used in multilayer planar targets to produce plasmas with different coronal temperature and collisionality and modify the conditions of hot-electron *** variety of available diagnostics allowed full characterization of the population of hot electrons,retrieving their conversion efficiency,time generation and duration,temperature,and angular *** obtained results are shown to be consistent with those from detailed simulations and similar inertial confinement fusion *** on the measured data,the advantages,reliability,and complementarity of the experimental diagnostics are discussed.

关键词： spectroscopy shock allowed

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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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Studies of laser-plasma interaction physics with low-density targets for direct-drive inertial confinement fusion on the Shenguang III prototype

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matter and Radiation at Extremes 2021年第2期6卷 54-66页

作者： V.T.Tikhonchuk T.Gong N.Jourdain O.Renner F.P.Condamine K.Q.Pan W.Nazarov L.Hudec J.Limpouch R.Liska m.krus F.Wang D.Yang S.W.Li Z.C.Li Z.Y.Guan Y.G.Liu T.Xu X.S.Peng X.m.Liu Y.L.Li J.Li T.m.Song J.m.Yang S.E.Jiang B.H.Zhang W.Y.Huo G.Ren Y.H.Chen W.Zheng Y.K.Ding K.Lan S.Weber ELI-Beamlines Institute of PhysicsCzech Academy of Sciences25241 Dolni BrezanyCzech Republic Centre Lasers Intenses et Applications University of Bordeaux-CNRS-CEA33405 TalenceFrance Laser Fusion Research Center China Academy of Engineering PhysicsMianyang 621900China Institute of Plasma Physics Czech Academy of Sciences18200 PragueCzech Republic Independent Foam Target Supplier CarnoustieDD76DPUnited Kingdom Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague11519 PragueCzech Republic Institute of Applied Physics and Computational mathematics Beijing 100088China Center for Applied Physics and Technology Peking UniversityBeijing 100871China School of Science Xi’an Jiaotong UniversityXi’an 710049China

The physics of laser-plasma interaction is studied on the Shenguang III prototype laser facility under conditions relevant to inertial confinement fusion designs.A sub-millimeter-size underdense hot plasma is created by ionization of a low-density plastic foam by four high-energy(3.2 kJ)laser *** interaction beam is fired with a delay permitting evaluation of the excitation of parametric instabilities at different stages of plasma *** diagnostics are used for plasma characterization,scattered radiation,and accelerated *** experimental results are analyzed with radiation hydrodynamic simulations that take account of foam ionization and *** measured level of stimulated Raman scattering is almost one order of magnitude larger than that measured in experiments with gasbags and hohlraums on the same installation,possibly because of a greater plasma *** amplification is achieved in high-intensity speckles,indicating the importance of implementing laser temporal smoothing techniques with a large bandwidth for controlling laser propagation and absorption.

关键词： density. interaction scattered

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measurements of dihadron correlations relative to the event plane in Au+Au collisions at√^(S)NN=200 GeV

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Chinese Physics C 2021年第4期45卷 198-241页

作者： H.Agakishiev m.m.Aggarwal Z.Ahammed A.V.Alakhverdyants I.Alekseev J.Alford B.D.Anderson C.D.Anson D.Arkhipkin G.S.Averichev J.Balewski D.R.Beavis N.K.Behera R.Bellwied m.J.Betancourt R.R.Betts A.Bhasin A.K.Bhat H.Bichsel J.Bieleik J.Bielcikova B.Biritz L.C.Bland W.Borowski J.Bouchet E.Braidot A.V.Brandin A.Bridgeman S.G.Brovko E.Bruna S.Bueltmann I.Bunzarov T.P.Burton X.Z.Cai H.Caines m.Calderon de la Barca Sanchez D.Cebra R.Cendejas m.C.Cervantes Z.Chajecki P.Chaloupka S.Chattopadhyay H.F.Chen J.H.Chen J.Y.Chen L.Chen J.Cheng m.Cherney A.Chikanian K.E.Choi W.Christie P.Chung m.J.m.Codrington R.Corliss J.G.Cramer H.J.Crawford S.Dash A.Davila Leyva L.C.De Silvat R.R.Debbe T.G.Dedovich A.A.Derevschikov R.Derradi de Souza L.Didenko P.Djawotho S.m.Dogra X.Dong J.L.Drachenberg J.E.Draper J.C.Dunlop L.G Efimov m.Elnim J.Engelage G Eppley m.Estienne L.Eun O.Evdokimov R.Fatemi J.Fedorisin A.Feng R.G.Fersch P.Filip E.Finch V.Fine Y.Fisyak C.A.Gagliardi D.R.Gangadharan A.Geromitsos F.Geurts P.Ghosh Y.N.Gorbunov A.Gordon O.Grebenyuk D.Grosnick S.m.Guertin A.Gupta W.Guryn B.Haag O.Hajkova A.Hamed L-X.Han J.W.Harris J.P.Hays-Wehle m.Heinz S.Heppelmann A.Hirsch E.Hjort G.W.Hoffmann D.J.Hofiman B.Huang H.Z.Huang T.J.Humanic L.Huo G.Igo P.Jacobs W.W.Jacobs C.Jena F.Jin J.Joseph E.G.Judd S.Kabana K.Kang J.Kapitan K.Kauder H.Ke D.Keane A.Kechechyan D.Kettler D.P.Kikola J.Kiryluk A.Kisiel V.Kizka A.G.Knospe D.D.Koetke T.Kollegger J.Konzer I.Koralt L.Koroleva W.Korsch L.Kotchenda V.Kouchpil P.Kravtsov K.Krueger m.krus L.Kumar P.Kurnadi m.A.C.Lamont J.m.Landgraf S.LaPointe J.Lauret A.Lebedev R.Lednicky J.H.Lee W.Leight m.J.LeVine C.Lil L.Li N.Li W.Li X.Li X.Li Y.Li Z.m.Li m.A.Lisa F.Liu H.Liu J.Liu T.Ljubicic W.J.Llope R.S.Longacre W.A.Love Y.Lu E.V.Lukashov X.Luo G.L.ma Y.G.mai D.P.mahapatra R.majka O.I.mall L.K.mangotra R.manweiler S.margetis C.markert H.masui H.S.matis Yu.A.matulenko D.meDonald T.S.mcShane A.meschanin R.milner N.G.minaev S.mioduszewski A.mischke m.K.mitrovski B.mohanty m.m.mondal B.morozov D.A.morozov m.G.munhoz m Argonne National Laboratory Argonnellinois 60439USA Brookhaven National Laboratory UptonNew York 11973USA University of Califomia BerkeleyCaliformnia 94720USA University of California DavisCalifornia 95616USA University of Califormnia Los AngelesCalifomia 90095USA Universidade Estadual de Campinas Sao PauloBrazil University of Illinois at Chicago ChicagoIlinois 60607USA Creighton University OmahaNebraska 68178USA Czech Technical University in Prague FNSPEPrague11519Czech Republic Nuclear Physics Institute AS CR 25068 Rez/PragueCzech Republic University of Frankfurt FrankfurtGermany Institute of Physics Bhubaneswar 751005India Indian Institute of Technology MumbaiIndia Indiana University BloomingtonIndiana 47408USA Alikhanov Instiute for Theoretical and Experimental Physics MoscowRussia University of Jammu Jammu 180001India Joint Institute for Nuclear Research Dubna141980Russia Kent State University KentOhio 44242USA University of Kentucky LexingtonKentucky40506-0055USA Institute of modern Physics LanzhouChina Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720USA massachusetts Institute of Technology CambridgeMA 02139-4307USA mx-Planck-Institut fir Physik MunichGermany michigan State University East LansingMichigan 48824USA moscow Engineering Physics Institute Moscow Russia NIKHEF and Utrecht University AmsterdamThe Netherlands Ohio State University ColumbusOhio 43210USA Old Dominion University NorfolkVA23529USA Panjab University Chandigarh 160014India PennsyIvania State University University ParkPennsylvania 16802USA Institute of High Energy Physics ProtvinoRussia Purdue University West LafayetteIndiana 47907USA Pusan National University PusanRepublic of Korea University of Rajasthan Jaipur 302004India Rice University HoustonTexas 77251USA Universidade de Sao Paulo Sao PauloBrazil University of Science&Technology of China Hefei 230026.China Shandong University JinanShandong 250100China Shanghai Institute of Applied Physics Shanghai 201800Chi

Dihadron azimuthal correlations containing a high transverse momentum(pr)trigger particle are sensit-ive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium,*** measurements revealed a strong modification to di-hadron azimuthal correlations in Au+Au collisions with respect to ptp and d+Au *** modification in-creases with the collision centrality,suggesting a path-length or energy density dependence to the je-quenching *** paper reports STAR measurements of dihadron azimuthal correlations in mid-central(20%-60%)Au+Au collisions at√^(S)NN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane,Ф_(s)=|Ф_(t)-ψ_(Ep)|.The azimuthal correlation is studied as a function of both the trigger and associated particle *** subtractions of the combinatorial background and anisotropic flow,assuming Zero Yield At minimum(ZYAm),are *** correlation results are first discussed with subtraction of the even harmonic(elliptic and quadrangu-lar)flow *** away-side correlation is strongly modifed,and the modification varies withФ_(s),with a double-peak structure for out-of-plane trigger *** near-side ridge(long range pseudo-rapidity△_(η)correla-tion)appears to drop with increasingФ_(s)while the jet-like component remains approximately *** correla-tion functions are further studied with the subtraction of odd harmonic triangular flow background arising from *** is found that the triangular flow,while responsible for the majority of the amplitudes,is not sufficient to explain theφs-dependence of the ridge or the away-side double-peak *** dropping ridge withФ_(s)could be attributed to aФ_(s)-dependent lliptie anisotropy;however,the physics mechanism of the ridge remains an open *** with aФ_(s)-dependent elliptic flow,the away-side correlation structure

关键词： relativistic heavy ion collisions dihadron correlations jet-medium interactions anisotropic flow background event plane

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