A Method for Plasma Electron Temperature Evaluation for GOL-NB facilityA new method for measuring the electron temperature of the plasma in GOL-NB facility is proposed. The proposed method is based on measuring the ratio of intensities of spectral lines emitted by fast…S. Polosatkin·Jul 28, 2023SaveLearn
Inverse design and experimental realization of plasma metamaterialsWe apply inverse design methods to produce two-dimensional triangular-lattice plasma metamaterial (PMM) devices which are then constructed and demonstrated experimentally. Finite difference frequency…Jesse A. Rodriguez, Mark A. Cappelli·Jul 27, 2023SaveLearn
Chiral anomaly and dynamos from inhomogeneous chemical potential fluctuationsIn the standard model of particle physics, the chiral anomaly can occur in relativistic plasmas and plays a role in the early Universe, protoneutron stars, heavy-ion collisions, and quantum…Jennifer Schober, Igor Rogachevskii, Axel Brandenburg·Jul 27, 2023SaveLearn
On the Child-Langmuir Law in One, Two, and Three DimensionsWe consider the limiting current from an emitting patch whose size is much smaller than the anode-cathode spacing. The limiting current is formulated in terms of an integral equation. It is solved…Y. Y. Lau, Dion Li, David P. Chernin·Jul 27, 2023SaveLearn
Drive Asymmetry, Convergence and the Origin of Turbulence in ICF Implosions2D and 3D numerical simulations with the adaptive mesh refinement Eulerian radiation-hydrocode RAGE are used to investigate hydrodynamic disruption of asymmetrically driven ICF implosions. A central…Vincent A. Thomas, Robert J. Kares·Jul 27, 2023SaveLearn
Experimental validation of particle-in-cell/Monte Carlo collisions simulations in low-pressure neon capacitively coupled plasmasPlasma simulations are powerful tools for understanding fundamental plasma science phenomena and for process optimization in applications. To ensure their quantitative accuracy, they must be…Chan-Won Park, Benedek Horváth, Aranka Derzsi et al.·Jul 27, 2023SaveLearn
Relative magnetic helicity in multiply connected domainsMagnetic helicity is a conserved quantity of ideal magnetohydrodynamics (MHD) that is related to the topology of the magnetic field, and is widely studied in both laboratory and astrophysical…David MacTaggart, Alberto Valli·Jul 26, 2023SaveLearn
Improved Ion Heating in Fast Ignition by Pulse ShapingThe fast ignition paradigm for inertial fusion offers increased gain and tolerance of asymmetry by compressing fuel at low entropy and then quickly igniting a small region. Because this hotspot…Henry Fetsch, Nathaniel J. Fisch·Jul 26, 2023SaveLearn
High-speed plasma measurements with a plasma impedance probePlasma impedance probes (PIPs) are a type of RF probe that primarily measure electron density. This work introduces two advancements: a streamlined analytical model for interpreting PIP-monopole…John W. Brooks, Erik M. Tejero, Matthew C. Paliwoda et al.·Jul 26, 2023SaveLearn
Preferential acceleration of heavy ions in magnetic reconnection: Hybrid-kinetic simulations with electron inertiaSolar energetic particles (SEPs) in the energy range 10s KeV/nucleon-100s MeV/nucleon originate from Sun. Their high flux near Earth may damage the space borne electronics and generate secondary…Neeraj Jain, Jörg Büchner, Miroslav Bárta et al.·Jul 25, 2023SaveLearn
Positron generation and acceleration in a self-organized photon collider enabled by an ultra-intense laser pulseWe discovered a simple regime where a near-critical plasma irradiated by a laser of experimentally available intensity can self-organize to produce positrons and accelerate them to ultra-relativistic…K. Sugimoto, Y. He, N. Iwata et al.·Jul 25, 2023SaveLearn
Magnetic Effect on the Potential Barrier for NucleosynthesisWe demonstrated that a weak magnetic field can increase the permittivity, leading to a reduction in the potential barrier within the Debye sphere consisting of electrons and a nucleus. By solving the…Kiwan Park·Jul 25, 2023SaveLearn
Effect of resonance magnetic perturbation on edge-core turbulence spreading in a tokamak plasmaTurbulence spreading from edge to core region with resonance magnetic perturbation (RMP) is investigated using an electromagnetic Landau-fluid model in toroidal geometry. When RMP field with…Guangzhi Ren, Lai Wei, Zheng-Xiong Wang et al.·Jul 25, 2023SaveLearn
Identification of the melting line in the two-dimensional complex plasmas using an unsupervised machine learning methodMachine learning methods have been widely used in the investigations of the complex plasmas. In this paper, we demonstrate that the unsupervised convolutional neural network can be applied to obtain…Hu-Sheng Li, He Huang, Wei Yang et al.·Jul 24, 2023SaveLearn
The Importance of Heat Flux in Quasi-Parallel Collisionless ShocksCollisionless plasma shocks are a common feature of many space and astrophysical systems and are sources of high-energy particles and non-thermal emission, channeling as much as 20\% of the…Colby C. Haggerty, Damiano Caprioli, Paul A. Cassak et al.·Jul 23, 2023SaveLearn
Towards practical reinforcement learning for tokamak magnetic controlReinforcement learning (RL) has shown promising results for real-time control systems, including the domain of plasma magnetic control. However, there are still significant drawbacks compared to…Brendan D. Tracey, Andrea Michi, Yuri Chervonyi et al.·Jul 21, 2023SaveLearn
Exploration of Non-Resonant Divertor Features on the Compact Toroidal HybridNon-resonant divertors (NRDs) separate the confined plasma from the surrounding plasma facing components (PFCs). The resulting striking field line intersection pattern on these PFCs is insensitive to…K. A. Garcia, A. Bader, H. Frerichs et al.·Jul 20, 2023SaveLearn
Comment on "Evolution Equations of Nonlinearly Permissible, Coherent Hole Structures Propagating Persistently in Collisionless Plasmas''Recent critical remarks, published in "Annalen der Physik", about the present author's analysis of electron and ion holes and their stability are addressed and shown to be…I H Hutchinson·Jul 20, 2023SaveLearn
Aspherical PIC code (APIC) for modeling non-spherical dust in plasmas using shape-conforming coordinatesThe 2D3V Aspherical Particle-in-Cell (APIC) code is developed for modeling of interactions of non-spherical dust grains with plasmas. It simulates the motion of plasma electrons and ions in a…R. D. Smirnov, S. I. Krasheninnikov·Jul 20, 2023SaveLearn
Normal mode analysis of fluid discontinuities: numerical method and application to magnetohydrodynamicsFluid discontinuities, such as shock fronts and vortex sheets, can reflect waves and become unstable to corrugation. Analytical calculations of these phenomena are tractable in the simplest cases…William Béthune·Jul 19, 2023SaveLearn
Frequency-dependent electron power absorption mode transitions in capacitively coupled argon-oxygen plasmasPhase Resolved Optical Emission Spectroscopy (PROES) measurements combined with 1d3v Particle-in-Cell/Monte Carlo Collision (PIC/MCC) simulations are performed to investigate the excitation dynamics…Aranka Derzsi, Mate Vass, Ranna Masheyeva et al.·Jul 19, 2023SaveLearn
Analysis of a cusped helicon plasma thruster dischargeA compact helicon plasma thruster that features a cusp in its internal magnetic field is analyzed with experiments and simulations. A compensated Langmuir probe and a Faraday cup are used in the…Pedro Jimenez, Jiewei Zhou, Jaume Navarro et al.·Jul 18, 2023SaveLearn
Nonlinear mode coupling and energetics of driven magnetized shear-flow turbulenceTo comprehensively understand saturation of two-dimensional (2D) magnetized Kelvin-Helmholtz-instability-driven turbulence, energy transfer analysis is extended from the traditional interaction…B. Tripathi, A. E. Fraser, P. W. Terry et al.·Jul 17, 2023SaveLearn
Towards direct spatial and intensity characterization of ultra-high intensity laser pulses using ponderomotive scattering of free electronsSpatial distributions of electrons ionized and scattered from ultra-low pressure gases are proposed and experimentally demonstrated as a method to directly measure the intensity of an ultra-high…A. Longman, S. Ravichandran, L. Manzo et al.·Jul 17, 2023SaveLearn
On the failure of neutron yield scaling in the Dense Plasma FocusThe observed scaling of neutron yield in the Dense Plasma Focus (DPF) as the fourth power of the current in the plasma was the principal driver of the growth of DPF research in its early days.…S K H Auluck·Jul 15, 2023SaveLearn