Calculation of the runaway electron current in tokamak disruptionsTokamak disruptions can give rise to the runaway phenomenon, which is typical in plasma physics and describes the almost unbound acceleration of electrons to relativistic…Benjamin Buchholz·Sep 15, 2023SaveLearn
Exact Calculation of Nonideal Fields Demonstrates Dominance of Injection in Relativistic ReconnectionMagnetic reconnection is an important source of energetic particles in systems ranging from astrophysics to the laboratory. The large separation of spatiotemporal scales involved makes it critical to…Samuel R. Totorica, Seiji Zenitani, Shuichi Matsukiyo et al.·Sep 15, 2023SaveLearn
Local proton heating at magnetic discontinuities in Alfvenic and non-Alfvenic solar windWe investigate the local proton energization at magnetic discontinuities/intermittent structures and the corresponding kinetic signatures in velocity phase space in Alfvénic and non-Alfvénic wind…C. A. Gonzalez, J. L. Verniero, R. Bandyopadhyay et al.·Sep 14, 2023SaveLearn
Magnetic flutter effect on validated edge turbulence simulationsSmall magnetic fluctuations (B1/B0 10-4) are intrinsically present in a magnetic confinement plasma due to turbulent currents. While the perpendicular transport of particles and heat is…Kaiyu Zhang, Wladimir Zholobenko, Andreas Stegmeir et al.·Sep 14, 2023SaveLearn
Plasma modes in QED super-strong magnetic fields of magnetars and laser plasmasUltra-magnetized plasmas, where the magnetic field strength exceeds the Schwinger field of about BQ≈4×1013~gauss, become of great scientific interest, thanks to the current…Mikhail V. Medvedev·Sep 13, 2023SaveLearn
A linear model of synergetic current drive with lower-hybrid wave and electron cyclotron waveA linear model of synergetic current drive (SCD) with lower-hybrid wave (LHW) and electron cyclotron wave (ECW) is proposed to efficiently calculate the quantitative SCD efficiency and reveal the…J. N. Chen, S. Y. Chen, M. L. Mou et al.·Sep 13, 2023SaveLearn
Loading loss-cone distributions in particle simulationsNumerical procedures to generate random variates that follow loss-cone velocity distributions in particle simulations are presented. We propose a simple summation algorithm for the…Seiji Zenitani, Shin'ya Nakano·Sep 13, 2023SaveLearn
Spin-polarized 3He shock waves from a solid-gas composite target at high laser intensitiesWe investigate Collisionless Shock Acceleration of spin-polarized 3He for laser pulses with normalized vector potentials in the range a0 = 100-200. The setup utilized in the 2D-PIC…Lars Reichwein, Xiaofei Shen, Alexander Pukhov et al.·Sep 12, 2023SaveLearn
Space-time structured plasma wavesElectrostatic waves play a critical role in nearly every branch of plasma physics from fusion to advanced accelerators, to astro, solar, and ionospheric physics. The properties of planar…J. P. Palastro, K. G. Miller, R. K. Follett et al.·Sep 12, 2023SaveLearn
Statistical analysis of stochastic magnetic fluctuations in space plasma based on the MMS missionBased on the Magnetospheric Multiscale (MMS) mission we look at magnetic field fluctuations in the Earth's magnetosheath. We apply the statistical analysis using a Fokker-Planck equation to…Wiesław M. Macek, Dariusz Wójcik·Sep 12, 2023SaveLearn
On the Effects of Tokamak Plasma Edge Symmetries on Turbulence RelaxationThe plasma edge of a tokamak configuration is characterized by turbulent dynamics leading to enhanced transport. We construct a simplified 3D Hasegawa--Wakatani model reducing to a single partial…Nakia Carlevaro, Giovanni Montani, Fabio Moretti·Sep 12, 2023SaveLearn
Cross-tokamak Disruption Prediction based on Physics-Guided Feature Extraction and domain adaptationThe high acquisition cost and the significant demand for disruptive discharges for data-driven disruption prediction models in future tokamaks pose an inherent contradiction in disruption prediction…Chengshuo Shen, Wei Zheng, Bihao Guo et al.·Sep 11, 2023SaveLearn
Extra invariant and plasma inhomogeneity to improve zonal flowZonal flows are known to diminish turbulent transport in magnetic fusion. Interstingly, there is an adiabatic invariant that implies the emergence of zonal flow. The paper shows that if this…Alexander Balk·Sep 11, 2023SaveLearn
Radiation pattern and source size of particles in nanoplasmonic fusionFor the angular radiation patterns of proton, deuteron or alpha emission we present a way using particle-in-cell simulation of laser induced nanoplasmonic fusion. The differential Hanbury-Brown and…L. P. Csernai, T. Csörgő, I. Papp et al.·Sep 10, 2023SaveLearn
Magnetic field generation in laser-solid interactions at strong-field QED relevant intensitiesMagnetic field generation in ultra-intense laser-solid interactions is studied over a range of laser intensities relevant to next-generation laser facilities (a0 = 50-500) using 2D…Brandon K. Russell, Marija Vranic, Paul T. Campbell et al.·Sep 10, 2023SaveLearn
Effects of the applied fields' strength on the plasma behavior and processes in ExB plasma discharges of various propellants: II. Magnetic fieldWe present in this part II the effects of the magnetic field intensity on the properties of the plasma discharge and the underlying phenomena for different propellant's ion mass. The plasma setup…Maryam Reza, Farbod Faraji, Aaron Knoll·Sep 10, 2023SaveLearn
Effects of the applied fields' strength on the plasma behavior and processes in ExB plasma discharges of various propellants: I. Electric fieldWe present, in this two-part article, an extensive study on the influence that the magnitudes of the applied electric (E) and magnetic (B) fields have on a collisionless plasma discharge of xenon,…Maryam Reza, Farbod Faraji, Aaron Knoll·Sep 10, 2023SaveLearn
Lattice Boltzmann method for warm fluid simulations of plasma wakefield accelerationA comprehensive characterization of lattice Boltzmann (LB) schemes to perform warm fluid numerical simulations of particle wakefield acceleration (PWFA) processes is discussed in this paper. The LB…Daniele Simeoni, Gianmarco Parise, Fabio Guglietta et al.·Sep 9, 2023SaveLearn
Active learning-driven uncertainty reduction for in-flight particle characteristics of atmospheric plasma spraying of siliconIn this study, the first-of-its-kind use of active learning (AL) framework in thermal spray is adapted to improve the prediction accuracy of the in-flight particle characteristics and uses Gaussian…Halar Memon, Eskil Gjerde, Alex Lynam et al.·Sep 8, 2023SaveLearn
Radiation-dominated injection of positrons generated by the nonlinear Breit-Wheeler process into a plasma channelPlasma acceleration is considered a prospective technology for building a compact multi-TeV electron-positron collider in the future. The challenge of this endeavor is greater for positrons than for…Dominika Maslarova, Bertrand Martinez, Marija Vranic·Sep 8, 2023SaveLearn
Hosing of a long relativistic particle bunch in plasmaExperimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment,…T. Nechaeva, L. Verra, J. Pucek et al.·Sep 7, 2023SaveLearn
Simultaneous access to high normalized current, pressure, density, and confinement in strongly-shaped diverted negative triangularity plasmasStrongly-shaped diverted negative triangularity (NT) plasmas in the DIII-D tokamak demonstrate simultaneous access to high normalized current, pressure, density, and confinement. NT plasmas are shown…C. Paz-Soldan, C. Chrystal, P. Lunia et al.·Sep 7, 2023SaveLearn
Effective Viscosity, Resistivity, and Reynolds Number in Weakly Collisional Plasma TurbulenceWe examine dissipation and energy conversion in weakly collisional plasma turbulence, employing in situ observations from the Magnetospheric Multiscale (MMS) mission and kinetic Particle-in-Cell…Yan Yang, William H. Matthaeus, Sean Oughton et al.·Sep 6, 2023SaveLearn
3D simulations of positive streamers in air in a strong external magnetic fieldWe study how external magnetic fields from 0 to 40 T influence positive streamers in atmospheric pressure air, using 3D PIC-MCC (particle-in-cell, Monte Carlo collision) simulations. When a magnetic…Zhen Wang, Anbang Sun, Saša Dujko et al.·Sep 5, 2023SaveLearn
Line identification of extreme ultraviolet spectra from aluminum ions in EAST Tokamak plasmasExtreme ultraviolet (EUV) spectra emitted from aluminum in the 5-340 A wavelength range were observed in Experimental Advanced Superconducting Tokamak (EAST) discharges. Several spectral lines from…Fengling Zhang, Ling Zhang, Wenming Zhang et al.·Sep 5, 2023SaveLearn