Modulational electrostatic wave-wave interactions in plasma fluids modeled by asymmetric coupled nonlinear Schrödinger (CNLS) equationsThe interaction between two co-propagating electrostatic wavepackets characterized by arbitrary carrier wavenumber is considered. A one-dimensional (1D) non-magnetized plasma model is adopted,…N. Lazarides, Giorgos P. Veldes, Amaria Javed et al.·Mar 25, 2024SaveLearn
Pulse-shaping in the interaction of an elliptically-polarized laser and magnetized-plasmaPulse shaping provides a significant level of control and precision when optimizing laser-plasma interactions. Pulse shaping enables precise control and manipulation, resulting in enhanced energy…A. A. Molavi Choobini, F. M. Aghamir, S. S. Ghaffari-Oskooei·Mar 25, 2024SaveLearn
The high-density regime of dusty plasma: Coulomb plasmaIt is shown that the dust density regimes in dusty plasma are characterized by two complementary screening processes, (a) the low dust density regime where the Debye screening is the dominant process…K. Avinash, S. J. Kalita, R. Ganesh et al.·Mar 24, 2024SaveLearn
A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 3: Homo-interaction between a pair of rising/falling bubbles/dropletsA numerical study of the homo-interactions between two falling droplets and between two rising bubbles in a strongly coupled dusty plasma medium is presented in this article. This strongly coupled…Vikram Dharodi, Evdokiya Kostadinova·Mar 23, 2024SaveLearn
Core performance predictions in projected SPARC first-campaign plasmas with nonlinear CGYROThis work characterizes the core transport physics of SPARC early-campaign plasmas using the PORTALS-CGYRO framework. Empirical modeling of SPARC plasmas with L-mode confinement indicates an ample…P. Rodriguez-Fernandez, N. T. Howard, A. Saltzman et al.·Mar 22, 2024SaveLearn
Gauge-invariant variational formulations of electromagnetic gyrokinetic theoryThe use of gyrokinetics, wherein phase-space coordinate transformations result in a phase-space dimensionality reduction as well as the removal of fast time scales, has enabled the simulation of…Ronald Remmerswaal, Roman Hatzky, Eric Sonnendrücker·Mar 22, 2024SaveLearn
Coupled circularly polarized electromagnetic soliton states in magnetized plasmasThe interaction between two co-propagating electromagnetic pulses in a magnetized plasma is considered, from first principles, relying on a fluid-Maxwell model. Two circularly polarized wavepackets…G. P. Veldes, N. Lazarides, D. J. Frantzeskakis et al.·Mar 22, 2024SaveLearn
Physical insights from the aspect ratio dependence of turbulence in negative triangularity plasmasIn this work, we study the impact of aspect ratio A = R0 /r (the ratio of major radius R0 to minor radius r) on the confinement benefits of Negative Triangularity (NT) plasma shaping. We use…Alessandro Balestri, Justin Ball, Stefano Coda et al.·Mar 21, 2024SaveLearn
Electrostatic wave interaction via asymmetric vector solitons as precursor to rogue wave formation in non-Maxwellian plasmasAn asymmetric pair of coupled nonlinear Schrödinger (CNLS) equations has been derived through a multiscale perturbation method applied to a plasma fluid model, in which two wavepackets of distinct…N. Lazarides, Giorgos P. Veldes, D. J. Frantzeskakis et al.·Mar 21, 2024SaveLearn
Mechanism of circular polarization in giant pulses and fast radio burstsSome giant pulses and fast radio bursts exhibit notable circular polarization, which remains unexplained and carries significant implications for their emission mechanisms. In this study, we identify…Hui-Chun Wu·Mar 20, 2024SaveLearn
Non-Equilibrium and Self-Organization Evolution in Hot-Spot Ignition ProcessesDue to disparate formation mechanisms, as for central hot-spot ignition and fast ignition, the initial temperatures of electron and ions usually differs from each other in the hot spot. Considering…X. -Y. Fu, Z. -Y. Guo, Q. -H. Wang et al.·Mar 20, 2024SaveLearn
Two-dimensional inference of divertor plasma characteristics: advancements to a multi-instrument Bayesian analysis systemAn integrated data analysis system based on Bayesian inference has been developed for application to data from multiple diagnostics over the two-dimensional cross-section of tokamak divertors. Tests…Daniel Greenhouse, Chris Bowman, Bruce Lipschultz et al.·Mar 19, 2024SaveLearn
Growth of metal nanoparticles in hydrocarbon atmosphere of arc dischargeA direct current (DC) arc discharge is a widely used method for large-scale production of metal nanoparticles, core-shell particles, and carbon nanotubes. Here, we explore the growth of iron…Stanislav Musikhin, Valerian Nemchinsky, Yevgeny Raitses·Mar 19, 2024SaveLearn
Optimisation of Gyrokinetic Microstability Using Adjoint MethodsMicroinstabilities drive turbulent fluctuations in inhomogeneous, magnetized plasmas. In the context of magnetic confinement fusion devices, this leads to an enhanced transport of particles,…Georgia Acton, Michael Barnes, Sarah Newton et al.·Mar 19, 2024SaveLearn
Encoding of linear kinetic plasma problems in quantum circuits via data compressionWe propose an algorithm for encoding of linear kinetic plasma problems in quantum circuits. The focus is made on modeling electrostatic linear waves in one-dimensional Maxwellian electron plasma. The…Ivan Novikau, Ilya Y. Dodin, Edward A. Startsev·Mar 18, 2024SaveLearn
Wavelength modulation laser-induced fluorescence for plasma characterizationLaser-Induced Fluorescence (LIF) spectroscopy is an essential tool for probing ion and atom velocity distribution functions (VDFs) in complex plasmas. VDFs carry information about kinetic properties…Ivan Romadanov, Yevgeny Raitses, Andrei Smolyakov·Mar 16, 2024SaveLearn
Stellarator Optimization with ConstraintsIn this work we consider the problem of optimizing a stellarator subject to hard constraints on the design variables and physics properties of the equilibrium. We survey current numerical methods for…Rory Conlin, Patrick Kim, Daniel W. Dudt et al.·Mar 16, 2024SaveLearn
Femtosecond dynamics on the nanoscale of intense laser-induced grating plasmaThe complex interaction dynamics of intense femtosecond (fs) pulses and their picosecond (ps)-long leading edge with nanostructured solids occur at both the nanometer and the femtosecond scales,…Ankit Dulat, Sagar Dam, Sk Rakeeb et al.·Mar 16, 2024SaveLearn
Tokamak edge-SOL turbulence in H-mode conditions simulated with a global, electromagnetic, transcollisional drift-fluid modelThe design of commercially feasible magnetic confinement fusion reactors strongly relies on the reduced turbulent transport in the plasma edge during operation in the high confinement mode (H-mode).…Wladimir Zholobenko, Kaiyu Zhang, Andreas Stegmeir et al.·Mar 15, 2024SaveLearn
Spatial characterization of debris ejection from the interaction of a tightly focused PW-laser pulse with metal targetsWe present a novel scheme for rapid quantitative analysis of debris generated during experiments with solid targets following relativistic laser-plasma interaction at high-power laser facilities.…I. -M. Vladisavlevici, C. Vlachos, J. -L. Dubois et al.·Mar 15, 2024SaveLearn
Synthesizing impurity clustering in the edge plasma of tokamaks using neural networksThis work investigates the behavior of impurities in edge plasma of tokamaks using high-resolution numerical simulations based on Hasegawa--Wakatani equations. Specifically, it focuses on the…Zetao Lin, Thibault Maurel-Oujia, Benjamin Kadoch et al.·Mar 15, 2024SaveLearn
Reconstruction of Poloidal Magnetic Fluxes on EAST based on Neural Networks with Measured SignalsThe accurate construction of tokamak equilibria, which is critical for the effective control and optimization of plasma configurations, depends on the precise distribution of magnetic fields and…Feifei Long, Xiangze Xia, Jian Liu et al.·Mar 15, 2024SaveLearn
Generation of isolated attosecond electron bunches by the diffraction of a polarization-tailored intense laser beamWe propose utilizing a polarization-tailored high-power laser pulse to extract and accelerate electrons from the edge of a solid foil target to produce isolated attosecond electron bunches. The laser…Ke Hu, Longqing Yi·Mar 15, 2024SaveLearn
Gaussian process surrogate models for the properties of micro-tearing modes in spherical tokamaksSpherical tokamaks (STs) have many desirable features that make them a suitable choice for fusion power plants. To understand their confinement properties, accurate calculation of turbulent…William Hornsby, Ander Gray, James Buchanan et al.·Mar 14, 2024SaveLearn
Internally Driven β-plane Plasma Turbulence Using the Hasegawa-Wakatani SystemGeneral problem of plasma turbulence can be formulated as advection of potential vorticity (PV), which handles flow self-organization, coupled to a number of other fields, whose gradients provide…Özgür D. Gürcan·Mar 14, 2024SaveLearn