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Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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chinese Physics c 2024年第2期48卷 1-25页

作者： G. Aad b. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu y. Abulaiti b.S. Acharya c. Adam bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder y. Afik M.N. Agaras J. Agarwala A. Aggarwal c. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat b. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov c. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob b. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi c. Allaire b.M.M. Allbrooke J.F. Allen c.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso c. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves cardoso M.G. Alviggi M. Aly y. Amaral coutinho A. Ambler c. Amelung M. Amerl c.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev c. Anastopoulos T. Andeen J.K. Anders S.y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi c. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio bella c. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val c. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. babal H. bachacou K. bachas A. bachiu F. backman A. badea P. bagnaia M. bahmani A.J. bailey V.R. bailey J.T. baines L. baines O.K. baker E. bakos D. bakshi Gupta V. balakrishnan R. balasubramanian E.M. baldin P. balek E. ballabene F. balli L.M. baltes W.K. balunas J. balz E. banas M. bandieramonte A. bandyopadhyay S. bansal L. barak M. barakat E.L. barberio D. barberis M. barbero M.Z. barel K.N. barends T. barillari M-S. barisits T. barklow P. baron D.A. baron Mo The ATLAS collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGING

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Simultaneous enhancement of mechanical and shape memory properties by heat-treatment homogenization of Ti_(2)Ni precipitates in TiNi shape memory alloy fabricated by selective laser melting

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Journal of Materials Science & Technology 2022年第6期101卷 205-216页

作者： H.Z.Lu L.H.Liu c.yang X.Luo c.H.Song Z.Wang J.Wang y.D.Su y.F.Ding L.c.Zhang y.y.Li National Engineering Research center of Near-net-shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China Musculoskeletal Oncology Department Sun Yat-Sen University Cancer CenterGuangzhouGuangdong ProvinceChina Shenyang Aircraft Design and Research Institute Shenyang 110035China Guangdong Huayi Plumbing Fittings Industry co. Ltd.Kaiping 529321China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia

The excellent shape memory and mechanical properties of Ti Ni shape memory alloys(SMAs) fabricated using selective laser melting(SLM) are highly desirable for a wide range of critical applications. In this study, we examined the simultaneous enhancement of mechanical and shape memory properties using heat-treatment homogenization of Ti_(2)Ni precipitates in a Ti_(50.6)Ni_(49.4)SMA fabricated using SLM. Specifically, because of the complete solution treatment, nanoscale spherical Ti_(2)Ni precipitates were homogeneously dispersed throughout the grain interior. Interestingly, the resultant SMA exhibited an ultrahigh tensile strength of 880 ± 13 MPa, a large elongation of 22.4 ± 0.4%, and an excellent shape memory effect, with a recovery rate of > 98% and ultrahigh recoverable strain of 5.32% after ten loading–unloading cycles. These simultaneously enhanced properties are considerably superior than those of most previously reported Ti Ni SMAs fabricated using additive manufacturing. Fundamentally, the enhancement in tensile strength is ascribed to precipitation strengthening and work hardening, and the large plasticity is mainly attributed to the homogeneous nanoscale globular Ti_(2)Ni precipitates, which effectively impeded the rapid propagation of microcracks. Furthermore, the enhanced shape memory properties are derived from the suppression of dislocation movement and formation of retained stabilized martensite by the presence of high-density dislocations, nanoscale Ti_(2)Ni precipitates, and abundant interfaces. The obtained results provide insight into the enhancement of the two types of properties in Ti Ni SMAs and will accelerate the wider application of SMAs.

关键词： Shape memory alloy Selective laser melting Heat treatment Mechanical properties Shape memory properties

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Effect of static annealing on superplastic behavior of a friction stir welded Ti-6Al-4V alloy joint and microstructural evolution during deformation

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Journal of Materials Science & Technology 2022年第35期130卷 112-123页

作者： c.L.Jia L.H.Wu P.Xue D.R.Ni b.L.Xiao Z.y.Ma Shi-changxu Innovation center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Structural integration is one of the most critical developing directions in the modern aerospace field,in which large-scale complex components of Ti alloys are proposed to be fabricated via the method of welding + superplastic ***,the undesired strain localization appeared during superplastic deformation of the entire joint has largely hindered the development of this *** our study,a combination process of friction stir welding(FSW) + static annealing+ superplastic deformation was first time proposed to eliminate severe local *** achieve this result,a fully fine lamellar structure was obtained in the nugget zone(NZ) via FSW,which was totally different from the mill-annealed structure in the base material(bM).After annealing at 900℃ for 180 min,the bM and NZ then exhibited the similar elongation of> 500% and similar flow stress at 900 ℃,3 × 10^(-3)s^(-1),which was the precondition for achieving uniform superplastic deformation in the entire ***,the different microstructures in the bM and NZ tended to become the similar equiaxed structure after deformation,which was the result of different microstructural evolution mechanisms in the NZ and *** the NZ,there was a static and dynamic spheroidization of the fully lamellar structure during the process,which could largely reduce the flow softening of the fully lamellar *** the bM,a new view of "Langdon-cRSS theory"(cRSS,critical resolved shear stress) was proposed to describe the fragmentation of the coarse equiaxed structure,which established the relationship between grain boundary sliding and intragranular deformation during deformation.

关键词： Friction stir welding Titanium alloys Superplasticity Static annealing Microstructure

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用于PJMIF的超快气阀性能表征

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应用物理 2024年第6期14卷 508-521页

作者：景原通刘延斌 y. c. Francis Thio 张德雨袁东方张晓兵上海科技大学终极能源中心上海

上海科技大学正在研发第三代用于PJMIF的同轴等离子体枪STG1以及配套超快气阀。STG1的超快气阀需要在百微秒(~100 μs)的开关时间内注入0~30 mg的均匀气体。超快气阀利用j × b电磁力驱动金属飞盘控制气路开关,检测气阀结构中金属飞盘... 详细信息

上海科技大学正在研发第三代用于PJMIF的同轴等离子体枪STG1以及配套超快气阀。STG1的超快气阀需要在百微秒(~100 μs)的开关时间内注入0~30 mg的均匀气体。超快气阀利用j × b电磁力驱动金属飞盘控制气路开关,检测气阀结构中金属飞盘弹射时的运动轨迹可以直接体现气阀的稳定性和开关性能。针对两种结构的超快气阀搭建实验平台,采用激光三角测距法对气阀的金属飞盘的位移进行检测,获得金属飞盘在两种结构下的位移曲线,以及新型结构的气阀在不同电压下的开关时间,并通过有限元分析法对飞盘弹射过程中的振动现象进行验证。研究结果表明,金属飞盘在弹射过程中会产生中心振动,新型弹簧和短翼无孔飞盘组合下的新型结构相比于传统结构具有更高的重复性,可以通过改变电压的方式可以有效的将气阀的开关时间控制在0~300 μs。

关键词： PJMIF 超快气阀三角激光测距法飞盘

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SMXL5 attenuates strigolactone signaling in Arabidopsis thaliana by inhibiting SMXL7 degradation

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Molecular Plant 2024年第4期17卷 631-647页

作者： Qingtian Li Haiyang yu Wenwen chang Sunhyun chang Michael Guzman Lionel Faure Eva-Sophie Wallner Heqin yan Thomas Greb Lei Wang Ruifeng yao David c.Nelson Department of botany and Plant Sciences University of CaliforniaRiversideRiversideCA 2521USA yazhouwan National Laboratory Sanya 572025China Hainan Seed Industry Laboratory Sanya 57205China State Key Laboratory of chemo/biosensing and chemometrics Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental RegulationCollege of BiologyHunan UniversityChangsha 410082China Key Laboratory of Seed Innovation Center for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangHebei 050021China University of chinese Academy of Sciences Beijing 10004China School of the Sciences Biology DivisionTexas Woman’s UniversityDentonTX 76204USA centre for Organismal Studies(cOS) Heidelberg University6120 HeidelbergGermany

Hormone-activated proteolysis is a recurring theme of plant hormone signaling *** strigolactone signaling,the enzyme receptor DWARF14(D14)and an F-box protein,MORE AXILLARy GROWTH2(MAX2),mark SUPPRESSOR OF MAX21-LIKE(SMXL)family proteins SMXL6,SMXL7,and SMXL8 for rapid *** of these transcriptional corepressors initiates downstream growth *** homologous proteins SMXL3,SMXL4,and SMXL5,however,are resistant to MAX2-mediated *** discovered that the smxl4 smxl5 mutant has enhanced responses to ***5 attenuates strigolactone signaling by interfering with AtD14-SMXL7 ***5 interacts with AtD14 and SMXL7,providing two possible ways to inhibit SMXL7 ***5 function is partially dependent on an ethylene-responsive-element binding-factor-associated amphiphilic repression(EAR)motif,which typically mediates interactions with the TOPLESS family of transcriptional ***,we found that loss of the EAR motif reduces SMXL5-SMXL7 interactions and the attenuation of strigolactone signaling by *** hypothesize that integration of SMXL5 into heteromeric SMXL complexes reduces the susceptibility of SMXL6/7/8 proteins to strigolactone-activated degradation and that the EAR motif promotes the formation or stability of these *** mechanism may provide a way to spatially or temporally fine-tune strigolactone signaling through the regulation of SMXL5 expression or translation.

关键词： Arabidopsis typically inhibiting

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A quasi-in-situ EbSD study of the thermal stability and grain growth mechanisms of cocrNi medium entropy alloy with gradient-nanograined structure

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Journal of Materials Science & Technology 2022年第14期109卷 54-63页

作者： P.-c.Zhao b.Guan y.-G.Tong R.-Z.Wang X.Li X.-c.Zhang S.-T.Tu Key Laboratory of Pressure Systems and Safety Ministry of EducationSchool of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China college of Materials Science and Engineering Chongqing UniversityChongqing 400044China college of Automobile and Mechanical Engineering Changsha University of Science and TechnologyChangshaChina

The thermal stability and mechanical properties of a gradient-nanograined structure(GNS)cocrNi medium entropy alloy(MEA)processed by ultrasonic surface rolling were studied by using isothermal/isochronal annealing tests combined with quasi-in-situ electron backscatter diffraction(EbSD)characterization and Vickers micro-hardness(HV)measurements.A layer by layer high-throughput investigation method was used to quantitatively study the grain growth kinetics and grain boundary evolution with different initial grain sizes,which could effectively save specimen and time *** grain nucleation and growth,as well as shrink and disappearance process throughΣ3 coincidence site lattice boundary migration with slightly lattice rotation during annealing were directly *** layer by layer grain growth kinetics and calculated activation energy indicate that the thermal stability of nanograined top surface layer is relatively higher than that of nano-twined subsurface layer for the gradient cocrNi MEA processed by ultrasonic surface *** analysis show that the grain boundary relaxation and dynamic recrystallization of the topmost nano-grains led to the decrease of grain boundary energy,thus improving their thermal *** present work provided theoretical basis for the application of cocrNi MEA at high ***,the high-throughput method on the investigation of grain stability by using gradient structure can be easily extended to other materials and it is of great significance for understanding the microstructural evolution of gradient materials.

关键词： Medium entropy alloy Grain growth Gradient materials Nanostructured materials Annealing High throughput

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Philippine retinoblastoma initiative multi-eye center study 2010-2020

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 144-156页

作者： Roland Joseph D.Tan Gary John V.Mercado Patricia E.cabrera Paulita Pamela P.Astudillo Rolando Enrique D.Domingo Josept Mari S.Poblete charmaine Grace M.cabebe Adriel Vincent R.Te Melissa Anne S.Gonzales Jocelyn G.Sy beltran Alexis A.Aclan Jayson T.So Fatima G.Regala Kimberley Amanda K.comia Josemaria M.castro Mara Augustine S.Galang Aldous Dominic c.cabanlas benedicto Juan E.Aguilar Gabrielle S.Evangelista Jo Michael Maniwan Andrei P.Martin calvin y.Martinez John Alfred H.Lim Rena Ivy bascuna Rachel M.Ng Kevin b.Agsaoay Kris Zanna A.Acluba-Arao Ellaine Rose V.Apostol beatriz M.Prieto Department of Ophthalmology and Visual Sciences Philippine General HospitalManila 1000Philippines Department of Ophthalmology Baguio General Hospital and Medical CenterBaguio City 2600Philippines Department of Ophthalmology Manila Doctors HospitalManila 1000Philippines Department of Ophthalmology Rizal Medical CenterPasig City 1600Philippines Department of Ophthalmology Jose B.Lingad Memorial Regional HospitalPampanga 2000Philippines Department of Ophthalmology Southern Philippines Medical CenterDavao City 8000Philippines Department of Ophthalmology East Avenue Medical CenterQuezon City 1100Philippines Department of Ophthalmology Northern Mindanao Medical CenterCagayan de Oro City 9000Philippines Department of Ophthalmology Cebu Velez General HospitalCebu City 6000Philippines Legazpi Eye center Legazpi City 4500Philippines Department of Ophthalmology Cagayan Valley Medical CenterTuguegarao City 3500Philippines

AIM:To provide a comprehensive and more representative national data on the disease,especially on treatment options and outcomes,and to determine access of retinoblastoma patients from Luzon,Visayas and Mindanao to eye care,and determine if access is associated with delay in consultation,staging and ***:cohort study of retinoblastoma patients seen in eleven institutions located in the three major areas of the Philippines namely Luzon,Vizayas and Mindanao from ***:Totally 636 patients,involving 821 eyes,were ***(57%)were from Luzon and were seen in institutions in Luzon(72%).Annually,58±10 new cases were seen with 71%having unilateral *** delay of consultation remained long at 9(3,17)mo,longest in patients with unilateral disease(Pyas(Pbased on the International Retinoblastoma Staging System,only 35%of patients had Stage 1 while 47%already had extraocular *** was the most common treatment received by 484 patients while intravenous chemotherapy was received by *** were 250(39%)patients alive,195(31%)dead,85(13%)abandoned,17(3%)refused and 89(14%)with no ***:This study presents the largest cohort of retinoblastoma patients in the Philippines in terms of patients’and participating institutions’number and geographical location and type of institution(private and public).It also presents more comprehensive data on the treatments used and outcomes(survival,globe salvage,and vision retention rates).Delay in consultation was still long among patients leading to advanced disease stage and lower survival *** increasing capacity to diagnose and manage retinoblastoma in the country,the delay of consultation remains long primarily due to accessibility issues to eye care institutions especially in the Visayas and financial *** delay was still significant that overall survival rate remain low.

关键词： retinoblastoma Philippines clinical profile

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characterization of face-centered cubic structure and deformation mechanisms in high energy shot peening process of Tc17

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Journal of Materials Science & Technology 2022年第15期110卷 136-151页

作者： c.yang M.Q.Li y.G.Liu School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’an 710072China

The face-centered cubic structure(fcc)and its deformation behaviors,as well as the distinctive role of fcc-Ti in nanocrystallization in Tc17 subjected to high energy shot peening(HESP),were investigated by using comprehensive high-resolution transmission electron microscopy(HRTEM).The results showed that there was a stress-induced fcc-Ti in Tc17 with a lattice constant of 0.420–0.433 nm and the b-type orientation relationship between the hcp-Ti and the fcc-Ti as[2-1-10]_(hcp)//[-110]_(fcc)and(0001)_(hcp)//(111)_(fcc),which was accomplished by the gliding of Shockley partial dislocations with burgers vector of 1/3[01-10]on the basal *** deformation twinning dominated the subsequent deformation of fcc-Ti,producing two types of{111}twins with different *** them,the I-type twin with complete structure was generated by successive gliding of Shockley partial dislocations with the same burgers vector of 1/6[11-2].In contrast,the cooperative slip of three Shockley partials,whose sum of burgers vectors was equal to zero,produced the II-type twin with zero net macroscopic *** then,the emission of Shockley partial with the burgers vector of 1/6[11-2]on every three(111)fccplanes resulted in the formation of a 9R *** to the dissociation effect of lamellar fcc-Ti and the superior deformation ability of fcc structure,the occurrence of fcc-Ti effectively promoted surface nanocrystallization of Tc17.

关键词： Tc17 Severe plastic deformation Stress-induced phase transformation Deformation twinning Nanocrystallization

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Microstructure and Properties of Wb_(2)/cr Multilayer Films with Different bilayer Numbers Deposited by Magnetron Sputtering

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Acta Metallurgica Sinica(English Letters) 2022年第4期35卷 693-702页

作者： W.b.Shi y.M.Liu W.H.Li T.Li H.Lei J.Gong c.Sun Shi-changxu Innovation center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China college of Materials Science and Engineering Xi'an Shiyou UniversityXi'an 710065China

The influence of the bilayer number on the microstructure,mechanical properties,adhesion strength and tribological behaviors of the Wb_(2)/cr multilayer films was systematically investigated in the present *** groups of Wb_(2)/cr films with the same modulation ratio were synthesized by magnetron sputtering *** crystalline structure of the films was determined by X-ray *** morphologies and the microstructure of the films were observed by scanning electron microscopy,atomic force microscopy and transmission electron ***,Nano indenter,scratch tester and ball-on-disc tribometer were used to evaluate the mechanical and tribological *** bilayer numbers varied from 5 to 40,the hardness increased first and then decreased with the maximum hardness of 33.9 GPa when the bilayer number is *** H/E^(*)and H^(3)/E^(*2)values calculated to evaluate the fracture toughness showed the similar changing trend with *** adhesion strength reached the maximum of 67 N when the bilayer number is *** surface roughness and friction coefficient decreased with increasing bilayer *** wear mechanism was also investigated,and the results suggested that the multilayer film with bilayer number of 30 exhibited the best wear resistance(1.78×10^(–7)mm^(3)/Nm),benefiting from the contribution of high hardness,fracture toughness and adhesion strength.

关键词： Wb_(2)/cr multilayer Magnetron sputtering bilayer number Tribological behavior

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Nonlinear branched flow of intense laser light in randomly uneven media

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Matter and Radiation at Extremes 2023年第2期8卷 25-32页

作者： K.Jiang T.W.Huang c.N.Wu M.y.yu H.Zhang S.Z.Wu H.b.Zhuo A.Pukhov c.T.Zhou S.c.Ruan college of Applied Sciences Shenzhen UniversityShenzhen 518060People’s Republic of China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic Technologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China Institut für Theoretische Physik I Heinrich-Heine-Universität Düsseldorf40225 DüsseldorfGermany

branched flow is an interesting phenomenon that can occur in diverse *** is usually linear in the sense that the flow does not alter the properties of the *** flow of light on thin films has recently been *** is therefore of interest to know whether nonlinear light branching can also ***,using particle-in-cell simulations,we find that in the case of an intense laser propagating through a randomly uneven medium,cascading local photoionization by the incident laser,together with the response of freed electrons in the strong laser fields,triggers space–time-dependent optical *** resulting branching pattern depends dramatically on the laser *** is,the branching here is distinct from the existing linear *** observed branching properties agree well with theoretical analyses based on the Helmholtz *** branched propagation of intense lasers potentially opens up a new area for laser–matter interaction and may be relevant to other branching phenomena of a nonlinear nature.

关键词： laser intense flow

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