A Ritz variational principle for local collisionless gyrokinetic instabilitiesTurbulence driven by gyrokinetic instabilities is largely responsible for transport in magnetic fusion devices. To estimate this turbulent transport, integrated modeling codes often use mixing length…C. D. Stephens, P. -Y. Li·Jan 1, 2025SaveLearn
On the Nature of Subharmonics of the Electron Emission from Ultracold PlasmasOne of the most interesting phenomena in the ultracold plasmas are multiple subharmonics of the electron emission observed after its irradiation by the monochromatic radiowaves. Unfortunately, the…Yurii V. Dumin, Ludmila M. Svirskaya·Dec 31, 2024SaveLearn
Thermionic Current Beyond the Traditional Space Charge Limit Enabled by Trapped Ions in the Virtual CathodeWe show that ion trapping in virtual cathodes can raise the transmitted current of emitted electrons much closer to the full emission than is predicted by theories without trapped ions. The…Z. L. Idema, M. D. Campanell·Dec 31, 2024SaveLearn
Bulk and surface dominated phenomena and the formation of pentagonal structures in 2-D strongly coupled finite dust clustersThis paper explores the prevalence of size-dependent aspects in the context of dust clusters with the help of Molecular Dynamics (MD) simulations in two dimensions. The transition from macroscale…Mamta Yadav, Aman Singh Katariya, Animesh Sharma et al.·Dec 31, 2024SaveLearn
A rational design method for the Nagoya type-III antennaThe current study, as part of a PhD project on the design of a helicon thruster, aims to provide a rational methodology for the design of the helicon thruster's main component, i.e., the helicon…Daniele Iannarelli, Francesco Napoli, Antonella Ingenito et al.·Dec 30, 2024SaveLearn
Effect of negative triangularity on SOL plasma turbulence in double-null L-mode plasmasThe effects of negative triangularity (NT) on boundary plasma turbulence in double-null (DN) configurations are investigated using global, nonlinear, three-dimensional, flux-driven two-fluid…Kyungtak Lim, Paolo Ricci, Leonard Lebrun·Dec 30, 2024SaveLearn
Leveraging turbulence data from fusion experimentsVarious methods for leveraging turbulent fluctuation measurements from fusion plasma experiments are introduced, along with selected application examples. These can be categorized into spectral…Minjun J. Choi·Dec 28, 2024SaveLearn
Data-driven analysis of anomalous transport and three-wave-coupling effects in E x B plasma dischargesCollisionless cross-field electron transport in an E x B configuration relevant for electric propulsion is studied using data from a (z, θ) full-PIC simulation. Higher-order spectral analysis shows…Borja Bayón-Buján, Enrique Bello-Benítez, Jiewei Zhou et al.·Dec 27, 2024SaveLearn
A Brief Overlook on Magnetoplasmadynamic ThrustersThis paper presents a comprehensive analysis of Magnetoplasmadynamic Thrusters (MPDT), examining their working principles, performance characteristics, and potential applications in space propulsion.…Egemen Gover·Dec 27, 2024SaveLearn
On the proper treatment of magnetic fluctuations in full-f field-aligned turbulence codesPlasma turbulence in the edge of magnetic confinement devices is customarily treated as full-f due to large fluctuations. For computational efficiency, field-aligned coordinates are employed,…Kaiyu Zhang, Wladimir Zholobenko, Andreas Stegmeir et al.·Dec 27, 2024SaveLearn
Compton photons at the GeV scale from self-aligned collisions with a plasma mirrorWith today's multi-petawatt lasers, testing quantum electrodynamics (QED) in the strong field regime, where the electric field exceeds the Schwinger critical field in the rest frame of an…Aimé Matheron, Jean-Raphaël Marquès, Vincent Lelasseux et al.·Dec 26, 2024SaveLearn
Generally relativistic description of fast magnetic reconnection induced by thermal electromotive forceMany theoretical models were come up with to figure out the properties of magnetic reconnection process, among which the Sweet-Parker model is the most famous since it describes the magnetic…Ye Shen·Dec 25, 2024SaveLearn
Numerical solutions of resistive finite-pressure magnetohydrodynamic equilibria for non-axisymmetric toroidal plasmasA hybrid spectral/finite-element code is developed to numerically solve the resistive finite-pressure magnetohydrodynamic equilibria without the necessity of postulating nested magnetic flux surfaces…Jian Zhang, Ping Zhu, Chris C. Hegna·Dec 25, 2024SaveLearn
Attosecond electron bunch generation by an intense laser propagation in conical channel with a curved wallBy using two-dimensional particle-in-cell simulations, attosecond electron bunches with high density, high energy and small divergence angle can be obtained by p-polarized laser irradiation in…Min Zhang, Cui-Wen Zhang, De-Sheng Zhang et al.·Dec 25, 2024SaveLearn
Amplifier scheme: driven by direct-drive under 10 MJ laser toward inertial fusion energyThe National Ignition Facility successfully achieved target gain 2.4 thus marginally entering into burn stage.Meanwhile, a recent conceptual design on 10 MJ laser driver [Matter Radiat. Extremes 9,…Ke Lan, Xiumei Qiao, Yongsheng Li et al.·Dec 24, 2024SaveLearn
Suppressing Trapped-Electron-Mode-Driven Turbulence via Optimization of Three-Dimensional ShapingTurbulent transport driven by trapped electron modes (TEMs) is believed to drive significant heat and particle transport in quasihelically symmetric stellarators. Two three-dimensionally-shaped…J. M. Duff, B. J. Faber, C. C. Hegna et al.·Dec 24, 2024SaveLearn
Amplifier scheme: driven by indirect-drive under 10 MJ laser toward inertial fusion energyBurn efficiency is a key for commercial feasibility of fusion power station for inertial fusion energy, while burn efficiency is usually lower than 30% in the central ignition scheme of inertial…Yongsheng Li, Ke Lan, Hui Cao et al.·Dec 24, 2024SaveLearn
Magnetic helicity fluxes in dynamos from rotating inhomogeneous turbulenceWe analyze direct numerical simulations of large-scale dynamos in inhomogeneous nonhelically driven rotating turbulence with and without shear. The forcing is modulated so that the turbulent…Axel Brandenburg, Ethan T. Vishniac·Dec 23, 2024SaveLearn
Reduced kinetic modelling of shattered pellet injection in ASDEX UpgradePlasma-terminating disruptions represent a critical outstanding issue for reactor-relevant tokamaks. ITER will use shattered pellet injection (SPI) as its disruption mitigation system to reduce heat…Peter Halldestam, Paul Heinrich, Gergely Papp et al.·Dec 23, 2024SaveLearn
Wakefield generation and electron acceleration via propagation of radially polarized laser pulses in homogeneous plasmaThe paper presents a study of wakefield generation and electron injection via propagation of radially polarized laser pulses in homogeneous pre-ionized plasma. The analytical study is based on…Shivani Aggarwal, Saumya Singh, Dinkar Mishra et al.·Dec 23, 2024SaveLearn
Technical Status Report on Plasma Components and Systems in the context of EuPRAXIAThe EuPRAXIA project aims to construct two state-of-the-art accelerator facilities based on plasma accelerator technology. Plasma-based accelerators offer the possibility of a significant reduction…A. Biagioni, N. Bourgeois, F. Brandi et al.·Dec 22, 2024SaveLearn
Development of grid-based and PINN solvers for electron kinetics in collisional non-thermal plasmasWe compare traditional finite volume and Physics Informed Neural Network (PINN) solvers for elliptic (Poisson), hyperbolic (advection), and parabolic (diffusion) equations in 2d settings. We describe…Vladimir Kolobov, Lucius Schoenbaum·Dec 21, 2024SaveLearn
The effect of plasmoid drifts on the pellet rocket effect in magnetic confinement fusion plasmasWe detail here a semi-analytical model for the pellet rocket effect, which describes the acceleration of pellets in a fusion plasma due to asymmetries in the heat flux reaching the pellet surface and…N. J. Guth, O. Vallhagen, P. Helander et al.·Dec 20, 2024SaveLearn
3D non-linear MHD simulations of core density collapse event in LHD plasmaA new three-dimensional, non-linear Magnetohydrodynamics (MHD) model has been extended in MIPS code, incorporating parallel heat diffusivity. The model has been benchmarked against the former MHD…A. Civit-Bertran, S. Futatani, Y. Suzuki et al.·Dec 20, 2024SaveLearn
Electromagnetic particle-in-cell modeling of an electron cyclotron resonance plasma discharge in hydrogenA low pressure discharge sustained in molecular hydrogen with help of the electron cyclotron resonance heating at a frequency of 2.45 GHz is simulated using a fully electromagnetic implicit charge-…D. Eremin, Yu. Sharova, L. Heijmans et al.·Dec 20, 2024SaveLearn