Mean field theory for intense light-matter interactions in high energy density plasmasWe present a generalization of Vlasov-Maxwell kinetic theory that accounts for intense electromagnetic fields. A strongly-radiating, possibly optically-thick plasma is decomposed into fragments, each…J. W. Burby, P. J. Morrison·Nov 24, 2022SaveLearn
Equilibrium β-limits dependence on bootstrap current in classical stellaratorsWhile it is important to design stellarators with high magneto-hydrodynamic (MHD) stability β-limit, it is also crucial to ensure that good magnetic surfaces exist in a large range of β values.…A. Baillod, J. Loizu, Z. Qu et al.·Nov 23, 2022SaveLearn
Pressure-Strain Interaction: II. Decomposition in Magnetic Field-Aligned CoordinatesIn weakly collisional and collisionless magnetized plasmas, the pressure-strain interaction describes the rate of conversion between bulk flow and thermal energy density. In this study, we derive an…Paul A. Cassak, M. Hasan Barbhuiya, H. Arthur Weldon·Nov 23, 2022SaveLearn
Pressure-Strain Interaction: I. On Compression, Deformation, and Implications For Pi-DThe pressure-strain interaction describes the rate per unit volume that energy is converted between bulk flow and thermal energy in neutral fluids or plasmas. The term has been written as a sum of…Paul A. Cassak, M. Hasan Barbhuiya·Nov 23, 2022SaveLearn
Pressure-Strain Interaction: III. Particle-in-Cell Simulations of Magnetic ReconnectionHow energy is converted into thermal energy in weakly collisional and collisionless plasma processes such as magnetic reconnection and plasma turbulence has recently been the subject of intense…M. Hasan Barbhuiya, Paul A. Cassak·Nov 23, 2022SaveLearn
Density jump for oblique collisionless shocks in pair plasmas: allowed solutionsShockwaves in plasma are usually dealt with using Magnetohydrodynamics (MHD). Yet, MHD entails the assumption of a short mean free path, which is not fulfilled in a collisionless plasma. Recently,…Antoine Bret, Ramesh Narayan·Nov 23, 2022SaveLearn
Global linear stability analysis of kinetic Trapped Ion Mode (TIM) turbulence in tokamak plasma using spectral methodTrapped ion modes (TIM) belong to the family of ion temperature gradient (ITG) modes, which are one of the important ingredients in heat turbulent transport at the ion scale in tokamak plasmas. It is…D. Mandal, M. Lesur, E. Gravier et al.·Nov 22, 2022SaveLearn
Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angleLaser-plasma instability (LPI) is one of the main obstacles in laser-driven inertial confinement fusion (ICF) for achieving predictable and reproducible fusion at high gain. For the first time we…Yi Guo, Xiaomei Zhang, Dirui Xu et al.·Nov 22, 2022SaveLearn
Revisiting Kinematic Fast Dynamo in 3-dimensional magnetohydrodynamic plasmas: Dynamo transition from non-Helical to Helical flowsDynamos wherein magnetic field is produced from velocity fluctuations are fundamental to our understanding of several astrophysical and/or laboratory phenomena. Though fluid helicity is known to play…Shishir Biswas, Rajaraman Ganesh·Nov 22, 2022SaveLearn
Spin Hall effect of radiofrequency waves in magnetized plasmasIn inhomogeneous media, electromagnetic-wave rays deviate from the trajectories predicted by the leading-order geometrical optics. This effect, called the spin Hall effect of light, is typically…Yichen Fu, I. Y. Dodin, Hong Qin·Nov 21, 2022SaveLearn
Two-dimensional complex (dusty) plasma with active Janus particlesA two-dimensional complex plasma containing active Janus particles was studied experimentally. A single layer of micron-size plastic microspheres was suspended in the plasma sheath of a…Volodymyr Nosenko·Nov 21, 2022SaveLearn
Simulation of neutral beam current drive on EAST tokamakNeutral beam current drive (NBCD) on the EAST tokamak is studied by using Monte-Carlo test particle code TGCO. Phase-space structure of the steady-state fast ion distribution is examined and…Youjun Hu, Xingyuan Xu, Yunchan Hu et al.·Nov 20, 2022SaveLearn
An Electromagnetic Calculation of Ionospheric Conductance that seems to Override the Field Line Integrated ConductivityWe derive a steady-state, electromagnetic solution for collisional plasma and apply it to computing the total conductance for a vertically stratified ionosphere interrogated by a 3D signal with…Russell B. Cosgrove·Nov 19, 2022SaveLearn
An investigation of shock formation versus shock mitigation of colliding plasma jetsThis work studies the interaction between colliding plasma jets to understand regimes in which jet merging results in shock formation versus regimes in which the shock formation is mitigated due to…Petr Cagas, James Juno, Ammar Hakim et al.·Nov 18, 2022SaveLearn
Ponderomotive forces in unmagnetized plasmas described by Kappa distribution functionsThe Washimi and Karpman ponderomotive interaction due to electromagnetic waves propagation is investigated for unmagnetized plasmas described by a isotropic Kappa distribution. We performed a brief…Joaquín Espinoza-Troni, Felipe A Asenjo, Pablo S Moya·Nov 18, 2022SaveLearn
A Nuclear-Based Diagnostic Scheme for Nonthermal Ion Spectrum in High Energy Density Plasmas ExperimentsThe nuclear reactions in a plasma system with energy distribution deviated from Maxwellian are proved to have some unique characteristics including those in their product energy spectrum. Based on…K. Li, Z. Y. Liu, A. D. Liu et al.·Nov 18, 2022SaveLearn
Numerical study of RF power coupling in fusion-relevant single- and multi-driver H- ion sourcesITER's large and powerful neutral beam injection system is based on an ion source utilizing a modular concept, where eight cylindrical drivers are attached to one common expansion and extraction…Dominikus Zielke, Stefan Briefi, Ursel Fantz·Nov 18, 2022SaveLearn
Constructing precisely quasi-isodynamic magnetic fieldsWe present a novel method for numerically finding quasi-isodynamic stellarator magnetic fields with excellent fast-particle confinement and extremely small neoclassical transport. The method works…Alan Goodman, Katia Camacho Mata, Sophia A Henneberg et al.·Nov 17, 2022SaveLearn
Analysis and Particle-in-Cell Simulation of Gridded ICRH Plasma ThrusterLarge-payload deep space missions are impractical with current rocket propulsion technologies in use. Chemical thrusters yield a high thrust but low efficiency while ion thrusters are efficient but…Ishaan Mishra·Nov 17, 2022SaveLearn
Energetic particle transport: diffusion vs convection and phase-space barriersEnergetic particle redistribution in the presence of multiple Alfvén eigenmodes is analyzed in [PPCF 58, 014019 (2016)] for the ITER 15MA baseline scenario: non-linear hybrid simulations (within…Nakia Carlevaro, Giovanni Montani, Matteo Valerio Falessi et al.·Nov 16, 2022SaveLearn
Effects of suprathermal electrons on electron-acoustic instabilitiesWe study the electron-acoustic instabilities in plasmas with two kappa-distributed electrons and stationary ions. The instabilities are driven by the relative drift between two electron components.…Ran Guo·Nov 16, 2022SaveLearn
Viscous effects on nonlinear double tearing mode and plasmoid formation in adjacent Harris sheetsIn this paper, we study the effects of viscosity on the evolution of double tearing mode (DTM) in a pair of adjacent Harris sheets based on the resistive MHD model in the NIMROD code. Similar to the…Nisar Ahmad, Ping Zhu, Chao Shen et al.·Nov 16, 2022SaveLearn
Development of a new quantum trajectory molecular dynamics frameworkAn extension to the wave packet description of quantum plasmas is presented, where the wave packet can be elongated in arbitrary directions. A generalised Ewald summation is constructed for the wave…Pontus Svensson, Thomas Campbell, Frank Graziani et al.·Nov 15, 2022SaveLearn
Physics-regularized neural network of the ideal-MHD solution operator in Wendelstein 7-X configurationsThe computational cost of constructing 3D magnetohydrodynamic (MHD) equilibria is one of the limiting factors in stellarator research and design. Although data-driven approaches have been proposed to…Andrea Merlo, Daniel Böckenhoff, Jonathan Schilling et al.·Nov 15, 2022SaveLearn
Turbulent reconnection accelerationThe ubiquitous turbulence in astrophysical plasmas is important for both magnetic reconnection and reconnection acceleration. We study the particle acceleration during fast 3D turbulent reconnection…Siyao Xu, Alex Lazarian·Nov 15, 2022SaveLearn