检索结果-南通市图书馆

High-energy hybrid femtosecond laser system demonstrating 2 × 10 PW capability

在线全文

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2020年第4期8卷 108-122页

作者： Fran?ois Lureau guillaume matras Olivier Chalus Christophe Derycke Thomas Morbieu Christophe Radier Olivier Casagrande Sébastien Laux Sandrine Ricaud Gilles Rey Alain Pellegrina Caroline Richard Laurent Boudjemaa Christophe Simon-Boisson Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Bertrand De Boisdeffre Petru Ghenuche Andrei Naziru Georgios Kolliopoulos Liviu Neagu Razvan Dabu Ioan Dancus Daniel Ursescu Thales LAS France Thales Systems Romania Extreme Light Infrastructure – Nuclear Physics ‘Horia Hulubei' National Institute for Physics and Nuclear Engineering University of Bucharest Faculty of Physics

We report on a two-arm hybrid high-power laser system(HPLS) able to deliver 2 × 10 PW femtosecond pulses,developed at the Bucharest-Magurele Extreme Light Infrastructure Nuclear Physics(ELI-NP) Facility. A hybrid frontend(FE) based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate(BBO) crystals, with a cross-polarized wave(XPW) filter in between, has been *** delivers 10 mJ laser pulses, at 10 Hz repetition rate, with more than 70 nm spectral bandwidth and high-intensity contrast, in the range of 1013:1. The high-energy Ti:sapphire amplifier stages of both arms were seeded from this common FE. The final high-energy amplifier, equipped with a 200 mm diameter Ti:sapphire crystal, has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers, at 1 pulse/min repetition rate. More than 300 J output pulse energy has been obtained by pumping with only 80% of the whole 600 J available pump energy. The compressor has a transmission efficiency of 74% and an output pulse duration of 22.7 fs was measured, thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond pulses. The reported results represent the cornerstone of the ELI-NP 2 × 10 PW femtosecond laser facility, devoted to fundamental and applied nuclear physics research.

关键词： lasers high-power laser pulses ultra-short laser pulses

High-energy hybrid femtosecond laser system demonstrating 2×10 PW capability

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2020年第4期8卷 104-118页

作者： François Lureau guillaume matras Olivier Chalus Christophe Derycke Thomas Morbieu Christophe Radier Olivier Casagrande Sébastien Laux Sandrine Ricaud Gilles Rey Alain Pellegrina Caroline Richard Laurent Boudjemaa Christophe Simon-Boisson Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Bertrand De Boisdeffre Petru Ghenuche Andrei Naziru Georgios Kolliopoulos Liviu Neagu Razvan Dabu Ioan Dancus Daniel Ursescu Thales LAS France 78990 ElancourtFrance Thales Systems Romania 060071 BucurestiRomania Extreme Light Infrastructure-Nuclear Physics ‘Horia Hulubei’National Institute for Physics and Nuclear Engineering077125 Bucharest MagureleRomania University of Bucharest Faculty of Physics077125 Bucharest MagureleRomania

We report on a two-arm hybrid high-power laser system(HPLS)able to deliver 2×10 PW femtosecond pulses,developed at the Bucharest-Magurele Extreme Light Infrastructure Nuclear Physics(ELI-NP)Facility.A hybrid frontend(FE)based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate(BBO)crystals,with a cross-polarized wave(XPW)filter in between,has been *** delivers 10 mJ laser pulses,at 10 Hz repetition rate,with more than 70 nm spectral bandwidth and high-intensity contrast,in the range of 1013:*** high-energy Ti:sapphire amplifier stages of both arms were seeded from this common *** final high-energy amplifier,equipped with a 200 mm diameter Ti:sapphire crystal,has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers,at 1 pulse/min repetition *** than 300 J output pulse energy has been obtained by pumping with only 80%of the whole 600 J available pump *** compressor has a transmission efficiency of 74%and an output pulse duration of 22.7 fs was measured,thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond *** reported results represent the cornerstone of the ELI-NP 2×10 PW femtosecond laser facility,devoted to fundamental and applied nuclear physics research.

关键词： lasers high-power laser pulses ultra-short laser pulses

Advancing our understanding of monocyte HLA-DR,S100A9,and the potential for individualized therapies in sepsis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Military Medical Research 2023年第6期10卷 881-883页

作者： guillaume Monneret Hospices Civils de Lyon Immunology LaboratoryHôpital E.Herriot69437 LyonFrance Universitéde Lyon EA 7426“Pathophysiology of Injury-Induced Immunosuppression”UniversitéClaude Bernard Lyon-169437 LyonFrance

By def inition, sepsis refers to a life threatening organ dysfunction due to a dysregulated host response to an infection[1]. More precisely, sepsis triggers a multifaceted response characterized by a simultaneous manifestation of proinflammatory and anti-inflammatory elements that disrupt mechanisms intended to maintain homeostasis. Initially, an overwhelming hyperinflammatory reaction ensues, resulting in tissue damage and organ dysfunction.

关键词： Sepsis Monocyte HLA-DR S100A9 Immunosuppression

A uniqueness lemma with applications to regularization and incompressible fluid mechanics

在线全文

学校读者我要写书评

暂无评论

Science China Mathematics 2021年第4期64卷 711-724页

作者： guillaume Lévy Centre de Mathématiques Laurent Schwartz École PolytechniquePalaiseau 91120France

In this paper,we extend our previous result from Lévy(2016).We prove that transport equations with rough coefficients do possess a uniqueness property,even in the presence of *** method relies strongly on duality and bears a strong resemblance to the well-known DiPerna-Lions theory first developed by DiPerna and Lions(1989).This uniqueness result allows us to reprove the celebrated theorem of Serrin(1962)in a novel *** a byproduct of the techniques,we derive an L^(1) bound for the vorticity in terms of a critical Lebesgue norm of the velocity *** also show that the zero solution is unique for the 2D Euler equations on the torus under a mild integrability assumption.

关键词： DiPerna-Lions Serrin’s theorem transport equation uniqueness weak solutions

Decay of Solutions to a Linear Viscous Asymptotic Model for Water Waves

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2010年第6期31卷 841-854页

作者： Olivier GOUBET guillaume WARNAULT LAMFA UMR 6140 CNRS UPJV 33 rue Saint-Leu Amiens 80039 cedex France LMPT UMR CNRS 6083 Université Francois Rabelais Parc Grandmont 37000 Tours France

The authors discuss a linear viscous asymptotic model for water waves and the decay rate of solutions towards the equilibrium.

关键词： Water waves Viscous asymptotic models Nonlocal operators Long-time asymptotics

guillaume Broux-Quemerais,Sarah Kaakai, Anis Matoussi,Wissal Sabbagh

在线全文

学校读者我要写书评

暂无评论

Probability, Uncertainty and Quantitative Risk 2024年第2期9卷 149-180页

作者： guillaume Broux-Quemerais Sarah Kaakarl Anis Matoussi Wissal Sabbagh Laboratoire Manceau de Mathematiques&FR CNRS No 2962 Institut du Risque et de I'AssuranceLeMansUniversityFrance Centre de Mathématiques Appliquees(CMAP) CNRSEcole polytechniqueInstitut Polytechnique de Paris91120 PalaiseauFrance

In this paper,we present a probabilistic numerical method for a class of forward utilities in a stochastic factor *** this purpose,we use the representation of forward utilities using the ergodic Backward Stochastic Differential Equations(eBSDEs)introduced by Liang and Zariphopoulou in[27].We establish a connection between the solution of the ergodic BSDE and the solution of an associated BSDE with random terminal time T,defined as the hitting time of the positive recurrent stochastic *** viewpoint based on BSDEs with random horizon yields a new characterization of the ergodic cost^which is a part of the solution of the *** particular,for a certain class of eBSDEs with quadratic generator,the Cole-Hopf transformation leads to a semi-explicit representation of the solution as well as a new expression of the ergodic cost>.The latter can be estimated with Monte Carlo *** also propose two new deep learning numerical schemes for ***,we present numerical results for different examples of eBSDEs and forward utilities together with the associated investment strategies.

关键词： Deep leaming scheme Forward utilities Ergodic BSDEs Markovian solution Deep learning algorithm

Mn_(3)Ag_((1-x))Cu_((x))N antiperovskite thin films with ultra-low temperature coefficient of resistance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第4期99卷 138-147页

作者： Cecil Cherian Lukose guillaume Zoppi Martin Birkett Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUnited Kingdom

We demonstrate the first successful attempt to partially substitute Cu into the Mn_(3)AgN-antiperovskite system to form Mn_(3)Ag_((1-x))Cu_((x))N thin films with an ultra-low temperature coefficient of resistance(TCR)for fabrication of ultra-precise passive *** were grown by reactive magnetron sputtering on alumina and glass substrates and were found to be amorphous in nature with highly negative TCR of-233 to-351 ppm/℃in their as-grown *** Cu alloying from x=0 to 1,resulted in increased sheet resistance,a negative shift of TCR and a change of grain morphology from spherical to ***-deposition heat treatment at 300-375℃,resulted in a positive shift of TCR and an ultra-low TCR of-4.66 ppm/℃for films with x=*** heat treatment induces grain growth,surface roughness and the formation of a manganese oxide upper surface layer up until temperatures of 350℃,after which surface oxidation begins to *** growth rate of the surface layer is controlled by the Cu concentration and heat treatment temperature,which both play a central role in the development of these novel ultralow TCR Mn_(3)Ag_((1-x))Cu_((x))N thin film structures.

关键词： Antiperovskite Thin film Sputter deposition Annealing Surface oxidation Near-zero temperature coefficient of resistance

Wave Propagation Across Acoustic/Biot’s Media:A Finite-Difference Method

在线全文

学校读者我要写书评

暂无评论

Communications in Computational Physics 2013年第4期13卷 985-1012页

作者： guillaume Chiavassa Bruno Lombard Centrale Marseille Laboratoire de Mecanique Modelisation et Procedes PropresUMR 7340 CNRSTechnopole de Chateau-Gombert38 rue Frederic Joliot-Curie13451 MarseilleFrance Laboratoire de Mecanique et d’Acoustique UPR 7051 CNRS31 chemin Joseph Aiguier13402 MarseilleFrance

Numerical methods are developed to simulate the wave propagation in heterogeneous 2D fluid/poroelastic *** propagation is described by the usual acoustics equations(in the fluid medium)and by the low-frequency Biot’s equations(in the porous medium).Interface conditions are introduced to model various hydraulic contacts between the two media:open pores,sealed pores,and imperfect ***-posedness of the initial-boundary value problem is *** grid numerical methods previously developed in porous heterogeneous media are adapted to the present context:a fourth-order ADER scheme with Strang splitting for timemarching;a space-time mesh-refinement to capture the slow compressional wave predicted by Biot’s theory;and an immersed interface method to discretize the interface conditions and to introduce a subcell *** experiments and comparisons with exact solutions are proposed for the three types of interface conditions,demonstrating the accuracy of the approach.

关键词： Biot’s model poroelastic waves jump conditions imperfect hydraulic contact highorder finite differences immersed interface method

Boundary layer influence on ship model tests in extremely shallow and confined water

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2023年第2期35卷 365-378页

作者： Evert Lataire Asif Raza Marc Vantorre guillaume Delefortrie Maritime Technology Division Ghent UniversityGhentBelgium ANAST University of LiègeLiègeBelgium Flanders Hydraulics Research AntwerpBelgium

Ships sailing in shallow and/or confined water(when calling a harbour or other berthing areas),will experience a different behaviour due to the interaction with vertical and/or horizontal *** other hydrodynamic changes induced in confined water,the lateral ship-bank interaction force changes its sign at a critical distance between ship and bank or ***,this distance and its effects on model test results have not been quantified in the *** investigate the shallow water hydrodynamics coupled with bank effects,systematic model tests were carried out at Flanders Hydraulics Research(FHR)with different ship *** following parameters were systematically varied:water depth,lateral position,speed,and propeller *** change of the ship-bank induced lateral force from an attraction force in medium-deep and shallow water to a repulsion force in extremely shallow water conditions,can be ascribed to the interaction of the boundary layers of the ship model and the environment(tank and installed banks).In this article,a mathematical model is proposed for the critical distance in terms of boundary layer influence *** indicates the range where the model tests are influenced by the horizontal or vertical restrictions combined with the propeller’s dynamic ***,the expression has also been extended to describe the relationship between full-scale ship length and water depth with the boundary layer influence *** to lower Reynolds numbers and relatively thicker boundary layers at model scale,upscaling of the model test results,according to Froude’s law,may provide erroneous *** influence of the boundary layer initiates at a relatively higher under keel clearance(UKC)for a smaller ship model compared with a larger ship ***,the boundary layer’s influence with respect to ship model length should be considered during model testing.

关键词： Shallow water hydrodynamics bank effects boundary layer model tests mathematical model