Characterization of a laser filament-induced plasma in air at 10 kHz using optical emission spectroscopyThe increasing availability of high-power Yb-based ultrafast laser-amplifier systems has opened the possibility of air filamentation at high repetition rates >1 kHz. In this new regime, accumulation…Malte C. Schroeder, Robin Löscher, Nikita Bibinov et al.·Aug 5, 2025SaveLearn
Influence of finite ion Larmor radius on the dynamics of weakly-collisional plasma jets colliding in magnetic archThe effect of the finite ion Larmor radius on the dynamics of two counterstreaming weakly collisional plasma flows in a magnetic field of an arch configuration is considered. Hybrid numerical…Artem V. Korzhimanov, Roman S. Zemskov, Sergey A. Koryagin et al.·Aug 4, 2025SaveLearn
Gyrotropy-Induced Symmetry Breaking of Erosion Hot Spots on Antenna Limiters during High-Power Tokamak RF Operation: Mechanisms and Mitigation StrategiesIon Cyclotron Range of Frequencies (ICRF) heating is essential for creating plasma in next-generation fusion devices. ICRF antennas often produce hot spots, reducing reliability, material…W. Tierens, A. Kumar, J. Lore et al.·Aug 4, 2025SaveLearn
Imposing quasineutrality on electrostatic plasmas via the Dirac theory of constraintsWe present a method for imposing quasineutrality and, more generally, charge density conservation in the Vlasov-Poisson (VP) and Vlasov-Amp\`ere (VA) systems, which describe electrostatic plasma…D. A. Kaltsas, J. W. Burby, P. J. Morrison et al.·Aug 4, 2025SaveLearn
Propagation and collisionless damping of topologically-protected surface plasma waves in non-uniformly magnetized plasma columnsRecent theoretical studies revealed the existence of topologically-protected surface plasma waves (TSPWs) in cold magnetized plasmas assumed uniform along the direction of a uniaxial magnetic field.…Roopendra Singh Rajawat, Gennady Shvets·Aug 1, 2025SaveLearn
Collimated QED Cascades with Curved Plasma MirrorConverting light into matter has been a longstanding goal in physics, particularly the creation of electron-positron pairs through quantum electrodynamic (QED) processes. While current approaches…Xuesong Geng, M. A. Serebryakov, E. N. Nerush et al.·Aug 1, 2025SaveLearn
Favorable modifications of Scrape-Off Layer (SOL) heat flux width through pulsed fuelling in ADITYA-U TokamakEnhancement of the scrape-off layer (SOL) heat flux width has been observed in the ADITYA-U Tokamak following the injection of short fuel gas pulses. A notable reduction in parallel heat flux near…SK Injamul Hoque, Harshita Raj, Ritu Dey et al.·Aug 1, 2025SaveLearn
Probing Proton versus Electron Heating and Energization during Magnetic ReconnectionThe mechanisms controlling the relative heating and energization of electrons and protons during magnetic reconnection are explored. Simulations are carried out with the kglobal model, which produces…Zhiyu Yin, James F. Drake, Marc Swisdak·Jul 31, 2025SaveLearn
Experimental Demonstration of Dephasing Reduction in an Optically Guided Laser-Plasma AcceleratorLaser-plasma accelerators offer a compact means of producing high-energy electron beams, but their performance is fundamentally limited by dephasing between the accelerated electrons and the plasma…Ronan Lahaye, Igor A. Andriyash, Julien Gautier et al.·Jul 31, 2025SaveLearn
Unified Description of Kappa-type velocity distributionsAn extension of Maxwell's original prescription for an ideal gas is adopted to derive a broad class of Kappa-type velocity distributions, encompassing both fat and short-tailed forms. Within this…J. A. S. Lima, M. H. Benetti·Jul 31, 2025SaveLearn
Axisymmetric Gyrokinetic Simulation of ASDEX-Upgrade Scrape-off Layer Using a Conservative Implicit BGK Collision OperatorCollisions play an important role in turbulence and transport of fusion plasmas. For kinetic simulations, as the collisionality increases in the domain of interest, the size of the time step to…D. Liu, J. Juno, G. W. Hammett et al.·Jul 30, 2025SaveLearn
Weak decaying collective-excitation approximation for Yukawa one-component plasmasIn this paper, the theoretical model of weak decaying collective excitations characteristic of many-particle systems with long-range interaction potentials is developed using the example of…Ilnaz I. Fairushin, Anatolii V. Mokshin·Jul 29, 2025SaveLearn
Enhanced beam transport via space charge mitigation in a multistage accelerator for fusion plasma diagnosticsEfficient transport of high-current negative ion beams is critical for accurate plasma potential diagnostics using heavy-ion beam probe (HIBP) systems in magnetically confined fusion plasmas.…M. Nishiura, K. Nakamura, K. Ueda et al.·Jul 28, 2025SaveLearn
Multi-Machine Scaling Laws for Fuel and Impurity Puffing Rates Sufficient for Detachment Access: a Systematic Review of Magnetic Confinement Fusion DevicesAn open-source database of 457 experimental and numerical entries representing 32 machines-including tokamaks, stellarators, and linear plasma devices-is assembled. From this dataset, we derive…M. Moscheni, A. Herrmann, R. Kembleton et al.·Jul 28, 2025SaveLearn
Optimizing Particle Transport for Enhanced Confinement in Quasi-Isodynamic StellaratorsDespite significant advances in reducing turbulent heat losses, modern quasi-isodynamic (QI) stellarators -- such as Stellaris -- continue to suffer from poor particle confinement, which…A. Bañón Navarro, A. Di Siena, F. Jenko et al.·Jul 28, 2025SaveLearn
Plasma pressure response to non-inductive current drive in axisymmetric visco-resistive MHD steady-statesWe investigate self-consistent, steady-state axisymmetric solutions of incompressible tokamak plasma using a visco-resistive magnetohydrodynamic model. A key contribution of this work is the…Anna Krupka, Marie-Christine Firpo·Jul 28, 2025SaveLearn
Two-dimensional spatially resolved measurements of helium metastable densities by tunable diode laser absorption spectroscopy in atmospheric pressure RF plasma jetsHelium metastable species play a critical role in sustaining radio-frequency (RF) driven micro atmospheric pressure plasma jets through Penning ionization and for the generation of reactive oxygen…David A Schulenberg, Xiao-Kun Wang, Mate Vass et al.·Jul 28, 2025SaveLearn
Numerical Studies for EuPRAXIA@SPARC\LAB Plasma Beam Driven Working PointThe realization of a plasma based user facility on the model of EuPRAXIA@SPARC\LAB requires to design a working point for the operation that allows to get an high accelerating gradient preserving a…Stefano Romeo, Alessio Del Dotto, Massimo Ferrario et al.·Jul 28, 2025SaveLearn
Characterizing ion-acoustic shock wave collisions in Martian multicomponent plasma environmentsWe present theoretical investigation of colliding ion-acoustic (IA) shock waves in Martian multicomponent plasmas consisting of hydrogen (H+), oxygen (O+) and oxygen molecule (O2+) ions,…Jayshree Mondal, Prasanta Chatterjee, Laxmikanta Mandi et al.·Jul 28, 2025SaveLearn
Hybrid fluid-kinetic cylindrical equilibria with axial background magnetic fieldSelf-consistent, one-dimensional quasineutral screw-pinch equilibria are constructed within a hybrid model that couples fluid electrons with kinetic ions governed by the Vlasov equation. The…D. A. Kaltsas, A. I. Kuiroukidis, G. N. Throumoulopoulos·Jul 27, 2025SaveLearn
On the interplay between plasma triangularity and micro-tearing turbulenceIn this work, we study the interplay between triangularity and micro-tearing turbulence using linear and nonlinear flux tube GENE simulations. We consider scenarios with negative and positive…Alessandro Balestri, Justin Ball, Stefano Coda·Jul 27, 2025SaveLearn
Semi-Implicit Continuum Kinetic Modeling of Weakly Collisional Parallel Transport in a Magnetic MirrorWe present implicit-explicit (IMEX) kinetic simulations of weakly collisional parallel plasma transport in magnetic mirror configurations using the continuum code COGENT. The numerical…M. Dorf, M. Dorr, V. Geyko et al.·Jul 26, 2025SaveLearn
Exploring the fusion power plant design space: comparative analysis of positive and negative triangularity tokamaks through optimizationThe optimal configuration choice between positive triangularity (PT) and negative triangularity (NT) tokamaks for fusion power plants hinges on navigating different operational constraints rather…T. Slendebroek, A. O. Nelson, O. M. Meneghini et al.·Jul 25, 2025SaveLearn
Unveiling the Velocity-Space Signature of Ion Cyclotron Damping Using Liouville MappingIon cyclotron damping is a key mechanism for the dissipation of electromagnetic wave energy in weakly collisional plasmas. This study presents a combined approach using Liouville mapping and the…Rui Huang, Gregory G. Howes·Jul 25, 2025SaveLearn
Perturbative model for the saturation of energetic-particle-driven modes limited by self-generated zonal modesWe present a simplified approach enforcing energy conservation to incorporate the effects of zonal modes alongside wave-particle nonlinearities in the determination of the saturation amplitude. The…Tommaso Barberis, Vinícius N. Duarte, Eamon J. Hartigan-O'Connor et al.·Jul 25, 2025SaveLearn