One dimensional reduced model for ITER relevant energetic particle transportWe set up a mapping procedure able to translate the evolution of the radial profile of fast ions, interacting with Toroidal Alfvén Eigenmodes, into the dynamics of an equivalent one dimensional…Nakia Carlevaro, Guo Meng, Giovanni Montani et al.·Jan 26, 2022SaveLearn
An in-depth numerical study of exact laws for compressible Hall magnetohydrodynamic turbulenceVarious exact laws governing compressible magnetohydrodynamic (MHD) and Hall-MHD (CHMHD) turbulence have been derived in recent years. Other than their fundamental theoretical interest, these laws…R. Ferrand, F. Sahraoui, S. Galtier et al.·Jan 26, 2022SaveLearn
Effect of Two-Stage Shattered Pellet Injection on Tokamak DisruptionsAn effective disruption mitigation system in a tokamak reactor should limit the exposure of the wall to localized heat losses and to the impact of high current runaway electron beams, and avoid…O. Vallhagen, I. Pusztai, M. Hoppe et al.·Jan 25, 2022SaveLearn
Spatiotemporal evolution of emission and absorption signatures in a laser-produced plasmaWe report spatiotemporal evolution of emission and absorption signatures of Al species in a nanosecond (ns) laser-produced plasma (LPP). The plasmas were generated from an Inconel target, which…Sivanandan S. Harilal, Elizabeth J. Kautz, Mark C. Phillips·Jan 25, 2022SaveLearn
Calliope: Pseudospectral shearing magnetohydrodynamics code with a pencil decompositionThe pseudospectral method is a highly accurate numerical scheme suitable for turbulence simulations. We have developed an open-source pseudospectral code, Calliope, which adopts the…Y. Kawazura·Jan 25, 2022SaveLearn
Linear pair creation damping of high frequency plasma oscillationWe have studied the linear dispersion relation for Langmuir waves in plasmas of very high density, based on the Dirac-Heisenberg-Wigner formalism. The vacuum contribution to the physical observables…H. Al-Naseri, G. Brodin·Jan 25, 2022SaveLearn
Characterization of Quasi-Keplerian, Differentially Rotating, Free-Boundary Laboratory PlasmasWe present results from pulsed-power driven differentially rotating plasma experiments designed to simulate physics relevant to astrophysical disks and jets. In these experiments, angular momentum is…V. Valenzuela-Villaseca, L. G. Suttle, F. Suzuki-Vidal et al.·Jan 25, 2022SaveLearn
Direct measurement of non-thermal electron acceleration from magnetically driven reconnection in a laboratory plasmaMagnetic reconnection is a ubiquitous astrophysical process that rapidly converts magnetic energy into some combination of plasma flow energy, thermal energy, and non-thermal energetic particles,…Abraham Chien, Lan Gao, Shu Zhang et al.·Jan 25, 2022SaveLearn
Deep modelling of plasma and neutral fluctuations from gas puff turbulence imagingThe role of turbulence in setting boundary plasma conditions is presently a key uncertainty in projecting to fusion energy reactors. To robustly diagnose edge turbulence, we develop and demonstrate a…A. Mathews, J. L. Terry, S. G. Baek et al.·Jan 24, 2022SaveLearn
Evolution of equilibrium particle beams under external wakefieldsA beam of ultrarelativistic charged particles in a plasma can reach equilibrium with its own radial wakefield and then propagate with little change in shape. If some co-moving perturbation appears…M. A. Baistrukov, K. V. Lotov·Jan 24, 2022SaveLearn
The effect of the width of the incident pulse to the dielectric transition layer in the scattering of an electromagnetic pulse -- a quantum lattice algorithm simulationThe effect of the thickness of the dielectric boundary layer that connects a material of refractive index n1 to another of index n2 is considered for the propagation of an electromagnetic…G. Vahala, L. Vahala, A. K. Ram et al.·Jan 23, 2022SaveLearn
Absorption of charged particles in Perfectly-Matched-Layers by optimal damping of the deposited currentPerfectly-Matched Layers (PML) are widely used in Particle-In-Cell simulations, in order to absorb electromagnetic waves that propagate out of the simulation domain. However, when charged particles…Remi Lehe, Aurore Blelly, Lorenzo Giacomel et al.·Jan 22, 2022SaveLearn
Ion-acoustic solitary waves in a partially degenerate plasmaThe propagation of arbitrary amplitude ion-acoustic (IA) solitary waves (SWs) is studied in unmagnetized, collisionless, homogeneous electron-positron-ion (e-p-i) plasmas with finite temperature…Rupak Dey, Gadadhar Banerjee, Amar P. Misra·Jan 22, 2022SaveLearn
Perpendicular subcritical shock structure in a collisional plasma experimentWe present a study of perpendicular subcritical shocks in a collisional laboratory plasma. Shocks are produced by placing obstacles into the super-magnetosonic outflow from an inverse wire array…D. R. Russell, G. C. Burdiak, J. J. Carroll-Nellenback et al.·Jan 22, 2022SaveLearn
Optical diagnostics of laser-produced plasmasLaser-produced plasmas (LPPs) engulf exotic and complex conditions ranging in temperature, density, pressure, magnetic and electric fields, charge states, charged particle kinetics, and gas-phase…S. S. Harilal, M. C. Phillips, D. H. Froula et al.·Jan 21, 2022SaveLearn
Quasilinear theory for inhomogeneous plasmaThis paper presents quasilinear theory (QLT) for classical plasma interacting with inhomogeneous turbulence. The particle Hamiltonian is kept general; for example, relativistic, electromagnetic, and…I. Y. Dodin·Jan 21, 2022SaveLearn
Energetic bounds on gyrokinetic instabilities. Part II. Modes of optimal growthWe introduce modes of instantaneous optimal growth of free energy for the fully electromagnetic gyrokinetic equations. We demonstrate how these "optimal modes" arise naturally from the free…G. G. Plunk, Per Helander·Jan 21, 2022SaveLearn
Confinement of relativistic electrons in a magnetic mirror en route to a magnetized relativistic pair plasmaCreating magnetized relativistic pair plasma in the laboratory would enable the exploration of unique plasma physics relevant to some of the most energetic events in the universe. As a step towards a…J. von der Linden, G. Fiksel, J. Peebles et al.·Jan 21, 2022SaveLearn
High-power laser experiment forming a supercritical collisionless shock in a magnetized uniform plasma at restWe present a new experimental method to generate quasi-perpendicular supercritical magnetized collisionless shocks. In our experiment, ambient nitrogen (N) plasma is at rest and well-magnetized, and…Ryo Yamazaki, S. Matsukiyo, T. Morita et al.·Jan 20, 2022SaveLearn
Machine-Learning enabled analysis of ELM filament dynamics in KSTARThe emergence and dynamics of filamentary structures associated with edge-localized modes (ELMs) inside tokamak plasmas during high-confinement mode is regularly studied using Electron Cyclotron…Cooper Jacobus, Minjun J. Choi, Ralph Kube·Jan 20, 2022SaveLearn
On the delayed emission from laser produced aluminum plasma under argon environmentIn this article, we report rather long time emission ( 250 μs) from aluminum neutrals (Al I) in ns laser produced plasma in the presence of ambient argon. The study is carried out with…Garima Arora, Jinto Thomas, Hem Chandra Joshi·Jan 19, 2022SaveLearn
Automated Fluid Model Generation and Numerical Analysis of Dielectric Barrier Discharges Using ComsolMCPlas is introduced as a powerful tool for automated fluid model generation with application to the analysis of dielectric barrier discharges operating in different regimes. MCPlas consists of a…A. P. Jovanović, M. N. Stankov, D. Loffhagen et al.·Jan 19, 2022SaveLearn
Momentum Conservation in Current Drive and Alpha-Channeling-Mediated Rotation DriveAlpha channeling uses waves to extract hot ash from a fusion plasma, while transferring energy from the ash to the wave. Intriguingly, it has been proposed that the extraction of this charged ash…Ian E. Ochs, Nathaniel J. Fisch·Jan 19, 2022SaveLearn
Reduced models for ETG transport in the pedestalThis paper reports on the development of reduced models for electron temperature gradient (ETG) driven transport in the pedestal. Model development is enabled by a set of 61 nonlinear gyrokinetic…David R. Hatch, Craig Michoski, Dongyang Kuang et al.·Jan 19, 2022SaveLearn
Investigation of Langdon effect on the nonlinear evolution of SRS from the early-stage inflation to the late-stage development of secondary instabilitiesIn a laser-irradiated plasma, the Langdon effect can result in a super-Gaussian electron energy distribution function (EEDF), imposing significant influences on the stimulated backward Raman…Jie Qiu, Liang Hao, Lihua Cao et al.·Jan 19, 2022SaveLearn