Complex structure of turbulence across the ASDEX Upgrade pedestalThe theoretical investigation of relevant turbulent transport mechanisms in H-mode pedestals is a great scientific and numerical challenge. In this study, we address this challenge by global,…L. A. Leppin, T. Görler, M. Cavedon et al.·Mar 19, 2023SaveLearn
Conceptual Design of In-Vessel Divertor Coils in DTTThe Divertor Tokamak Test (DTT) facility will be equipped with in-vessel divertor coils able to locally modify the flux surfaces in the divertor region. When the first DTT divertor had not been…Emilio Acampora, Raffaele Albanese, Roberto Ambrosino et al.·Mar 18, 2023SaveLearn
Nonlinear dynamics of small-scale Alfvén wavesWe study the nonlinear evolution of very oblique small-scale Alfvén waves with k di 1. At these scales, the waves become significantly compressive, unlike in MHD, due to the Hall term…Alfred Mallet, Seth Dorfman, Mel Abler et al.·Mar 17, 2023SaveLearn
Comments on "Low Q nuclear fusion in a volume heated mixed fuel reactor" by H. Ruhl and G. Korn (Marvel Fusion, Munich)We comment on the note "Low Q nuclear fusion in a volume heated mixed fuel reactor" by Ruhl and Korn in which hydrodynamic life-time considerations are included in estimates of ignition…K. Lackner, R. Burhenn, S. Fietz et al.·Mar 17, 2023SaveLearn
Magnetostatic Ponderomotive Potential in Rotating PlasmaA new end-plugging method for rotating plasmas is identified and analyzed. It uses the ponderomotive potential associated with an azimuthal magnetostatic wiggler. Studied both analytically and…T. Rubin, J. M. Rax, N. J. Fisch·Mar 17, 2023SaveLearn
Performance assessment of a tightly baffled, long-legged divertor configuration in TCV with SOLPS-ITERNumerical simulations explore the possibility to test the tightly baffled, long-legged divertor (TBLLD) concept in a future upgrade of the Tokamak à configuration variable (TCV). The SOLPS-ITER code…G. Sun, H. Reimerdes, C. Theiler et al.·Mar 16, 2023SaveLearn
Vibrational model of heat transfer in strongly coupled Yukawa fluids (dusty plasma liquids)A concise overview of the vibrational model of heat transfer in simple fluids with soft pairwise interactions is presented. The model is applied to evaluate the thermal conductivity coefficient of…Sergey Khrapak·Mar 16, 2023SaveLearn
Fluid-Solid Coupled Simulation of Hypervelocity Impact and Plasma FormationThe generation of plasma from hypervelocity impacts is an active research topic due to its important science and engineering ramifications in various applications. Previous studies have mainly…Shafquat T. Islam, Wentao Ma, John G. Michopoulos et al.·Mar 15, 2023SaveLearn
Extended magnetic reconnection in kinetic plasma turbulenceMagnetic reconnection and plasma turbulence are ubiquitous processes important for laboratory, space and astrophysical plasmas. Reconnection has been suggested to play an important role in the…Tak Chu Li, Yi-Hsin Liu, Yi Qi et al.·Mar 15, 2023SaveLearn
A mimetic finite difference based quasi-static magnetohydrodynamic solver for force-free plasmas in tokamak disruptionsForce-free plasmas are a good approximation where the plasma pressure is tiny compared with the magnetic pressure, which is the case during the cold vertical displacement event (VDE) of a major…Zakariae Jorti, Qi Tang, Konstantin Lipnikov et al.·Mar 15, 2023SaveLearn
ECMI Resonance in AKR Revisited: Hyperbolic Resonance, Harmonics, Wave-Wave InteractionRecapitulation of the resonance condition for the fundamental and higher electron cyclotron harmonics in the Electron Cyclotron Maser Instability (ECMI) enables radiation below and confirms the…W. Baumjohann, R. A. Treumann·Mar 14, 2023SaveLearn
Modulational instability in large-amplitude linear laser wakefieldsWe investigate the growth of ion density perturbations in large-amplitude linear laser wakefields via two-dimensional particle-in-cell simulations. Growth rates and wave numbers are found to be…Alexander von Boetticher, Roman Walczak, Simon Hooker·Mar 14, 2023SaveLearn
Three-Dimensional Kinetic Simulation of an Ion Thruster Plume with Carbon Backsputtering in a Vacuum ChamberGridded ion thrusters are tested in ground vacuum chambers to verify their performance when deployed in space. However, the presence of high background pressure and conductive walls in the chamber…Keita Nishii, Deborah A. Levin·Mar 13, 2023SaveLearn
Quodon Current in Tungsten and Consequences for Tokamak Fusion ReactorsTokamak fusion reactors produce energetic He ions that penetrate surfaces less than 20 micron and neutrons that spread throughout the reactor. Experiments with similar swift He ions in heavy metals…F. Michael Russell, Juan F. R. Archilla, José L. Mas·Mar 13, 2023SaveLearn
Simultaneous generation and detection of energetic particle and radiation beams from relativistic plasma mirrors driven at kHz repetition rateWe report on the first simultaneous measurement of high-order harmonics, relativistic electrons and low divergence proton beams generated from plasma mirrors driven at kHz repetition rate by…Jaismeen Kaur, Marie Ouillé, Dan Levy et al.·Mar 13, 2023SaveLearn
Higher order theory of quasi-isodynamicity near the magnetic axis of stellaratorsThe condition of quasi-isodynamicity is derived to second order in the distance from the magnetic axis. We do so using a formulation of omnigenity that explicitly requires the balance between the…Eduardo Rodriguez, Gabe G. Plunk·Mar 10, 2023SaveLearn
Ion-acoustic solitons in a relativistic Fermi plasma at finite temperatureThe theory of ion-acoustic solitons in nonrelativistic fully degenerate plasmas and nonrelativistic and ultra-relativistic degenerate plasmas at low temperatures is known. We consider a…R. Dey, G. Banerjee, A. P. Misra et al.·Mar 7, 2023SaveLearn
Four-thirds law of energy and magnetic helicity in electron and Hall magnetohydrodynamic fluidsIn this paper, by exploiting the feature of the Hall term, we establish some local version four-thirds laws for the dissipation rates of energy and magnetic helicity in both electron and Hall…Yanqing Wang, Otto Chkhetiani·Mar 7, 2023SaveLearn
Self-consistent simulation of compressional Alfvén eigenmodes excited by runaway electronsAlfvénic modes in the current quench (CQ) stage of the tokamak disruption have been observed in experiments. In DIII-D the excitation of these modes is associated with the presence of high-energy…Chang Liu, Andrey Lvovskiy, Carlos Paz-Soldan et al.·Mar 7, 2023SaveLearn
On the impact of short laser pulses on cold diluted plasmasWe analytically study the impact of a short laser pulse onto an inhomogeneous cold diluted plasma at rest, in particular: the duration of the hydrodynamic regime; the formation and the features of…Gaetano Fiore, Sergio De Nicola, Tahmina Akhter et al.·Mar 6, 2023SaveLearn
A quantum algorithm for the linear Vlasov equation with collisionsThe Vlasov equation is a nonlinear partial differential equation that provides a first-principles description of the dynamics of plasmas. Its linear limit is routinely used in plasma physics to…Abtin Ameri, Paola Cappellaro, Hari Krovi et al.·Mar 6, 2023SaveLearn
Head-on collision of large-scale high density plasmas jets: a first-principle kinetic simulation approachIn the double-cone ignition (DCI) inertial confinement fusion scheme, head-on collision of high density plasma jets is one of the most distinguished feature when compared with other schemes. However,…D. Wu, J. Zhang·Mar 6, 2023SaveLearn
Nonlinear microtearing modes in MAST and their stochastic layer formationFirst nonlinear gyrokinetic simulations of microtearing modes in the core of a MAST case are performed on two surfaces of the high-collisionality discharge used in Valovič et al. Nucl. Fusion 51.7…M. Giacomin, D. Dickinson, D. Kennedy et al.·Mar 4, 2023SaveLearn
Structure of pressure-gradient-driven current singularity in ideal magnetohydrodynamic equilibriumSingular currents typically appear on rational surfaces in non-axisymmetric ideal magnetohydrodynamic equilibria with a continuum of nested flux surfaces and a continuous rotational transform. These…Yi-Min Huang, Yao Zhou, Joaquim Loizu et al.·Mar 3, 2023SaveLearn
Characterization of a DC glow discharge in N2-H2 with electrical measurements and neutral and ion mass spectrometryThe addition of small amounts of H2 were investigated in a DC glow discharge in N2, at low pressure (~1 mbar) and low power (0.05 to 0.2 W.cm-3). We quantified the electric field, the…Audrey Chatain, Ana Sofia Morillo-Candas, Ludovic Vettier et al.·Mar 3, 2023SaveLearn