Critical gradient turbulence optimization toward a compact stellarator reactor conceptIntegrating turbulence into stellarator optimization is shown by targeting the onset for the ion-temperature-gradient mode, highlighting effects of parallel connection length, local magnetic shear,…G. T. Roberg-Clark, G. G. Plunk, P. Xanthopoulos et al.·Jan 17, 2023SaveLearn
Error Field and Correction Coils in DTT: a preliminary analysisThe Divertor Tokamak Test (DTT) facility, construction starting at Frascati, Italy, is designed to test different solutions for divertor in view of DEMO. A preliminary analysis of the error fields…Raffaele Albanese, Tommaso Bolzonella, Andrea G. Chiariello et al.·Jan 17, 2023SaveLearn
DC electric field generation and distribution in magnetized plasmasVery large DC and AC electric fields cannot be sustained between conducting electrodes because of volume gas breakdown and/or surface field emission. However, very large potential fields are now…Jean-Marcel Rax, Renaud Gueroult, Nathaniel J. Fisch·Jan 17, 2023SaveLearn
Simulation of short pulse photoemission in a micro-diode with implications for optimal beam brightnessMolecular dynamics simulations, with full Coulomb interaction are used to model short-pulse photoemission from a finite area in a microdiode. We demonstrate three emission regimes, source-limited…Hákon Örn Árnason, Kristinn Torfason, Andrei Manolescu et al.·Jan 15, 2023SaveLearn
Ion Hole Equilibrium and Dynamics in One DimensionElectrostatic solitary waves with negative potential (ion holes) are analyzed theoretically using a generalization of the treatment recently developed for slow electron holes. It is shown that an…I H Hutchinson·Jan 14, 2023SaveLearn
Coherent subcycle optical shock from superluminal plasma wakeWe propose a new mechanism for generating coherent subcycle optical pulse by directing a relativistic electron beam (REB) into a plasma with a density up-ramp. The subcycle pulse is coherently…H. Peng, T. W. Huang, K. Jiang et al.·Jan 13, 2023SaveLearn
High-efficient harmonic vortex generation from a laser irradiated hollow-cone targetIt has been recently reported that ultraviolet harmonic vortices can be produced when a high-power circular-polarized laser pulse travels through a micro-scale waveguide. However, the harmonic…Ke Hu, Longqing Yi·Jan 13, 2023SaveLearn
Thermodynamics of the electron-positron plasma at very high temperaturesThermodynamic properties of the electron-positron plasma (or gas) at high and very high temperatures are investigated. To achieve this goal we have derived a number of analytical formulas for the…Alexei M. Frolov·Jan 13, 2023SaveLearn
Kinetic equilibrium of two-dimensional force-free current sheetsForce-free current sheets are local plasma structures with field-aligned electric currents and approximately uniform plasma pressures. Such structures, widely found throughout the heliosphere, are…Xin An, Anton Artemyev, Vassilis Angelopoulos et al.·Jan 11, 2023SaveLearn
Femtosecond laser-induced sub-wavelength plasma inside dielectrics: III. Terahertz radiation emissionElectromagnetic radiation within the terahertz (THz) frequency range is of great interest for applications in remote sensing and time-domain spectroscopy. The laser-induced plasmas are promising…Kazem Ardaneh, Ken-Ichi Nishikawa, Remo Giust et al.·Jan 11, 2023SaveLearn
SOLPS-ITER numerical evaluation about the effect of drifts in a divertor configuration of ASDEX-Upgrade and a limiter configuration of J-TEXTThe High Field High Density Region (HFSFD) has been experimentally observed in both divertor and limiter tokamak devices. In order to numerically reproduced the HFSHD region in the limiter tokamak…H. Wu, P. Shi, F. Subba et al.·Jan 11, 2023SaveLearn
Feasibility of the EDICAM camera for runaway electron detection in JT-60SA disruptionsThe visible camera system EDICAM (Event Detection Intelligent Camera), recently installed on JT-60SA, is simulated to assess whether it can be used for measuring synchrotron radiation from…Soma Olasz, Mathias Hoppe, Tamás Szepesi et al.·Jan 10, 2023SaveLearn
Nonlinear interactions of ion acoustic waves explored using fast imaging decompositionsFast camera imaging is used to study ion acoustic waves propagating azimuthally in a magnetized plasma column. The high speed image sequences are analyzed using Proper Orthogonal Decomposition and 2D…Simon Vincent, Vincent Dolique, Nicolas Plihon·Jan 10, 2023SaveLearn
Validating neutral-beam current drive simulations in the TJ-II stellaratorIn this paper, we analyze the results of neutral-beam current drive (NBCD) experiments, performed in the TJ-II stellarator, with the aim of validating the theoretical predictions. Both parallel and…Sadig Mulas, Álvaro Cappa, José Martínez-Fernández et al.·Jan 9, 2023SaveLearn
Behaviour of Ion Acoustic Soliton in a two-electron temperature plasmas of Multi-pole line cusp Plasma Device (MPD)This article presents the experimental observations and characterization of Ion Acoustic Soliton (IAS) in a unique Multi-pole line cusp Plasma Device (MPD) device in which the magnitude of the…Zubin Shaikh, A. D. Patel, P. K. Chattopadhyay et al.·Jan 9, 2023SaveLearn
The role of field correlations on turbulent dissipationNonlinear phenomena and turbulence are central to our understanding and modeling the dynamics of fluids and plasmas, and yet they still resist analytical resolutions in many instances. However,…Annick Pouquet·Jan 9, 2023SaveLearn
Dynamic structure factor and excitation spectrum of the one-component plasma: the case of weak to moderate magnetizationMagnetized plasmas are well known to exhibit a rich spectrum of collective modes. Here, we focus on the density modes in dense or cold plasmas, where strong coupling effects alter the mode spectrum…Hanno Kählert, Michael Bonitz·Jan 9, 2023SaveLearn
Non-modal kinetic theory of the stability of the compressed-sheared plasma flows generated by the inhomogeneous microscale turbulence in the tokamak edge plasmaA nonmodal kinetic theory of the stability of the two-dimensional compressed-sheared mesoscale plasma flows, generated by the radially inhomogeneous electrostatic ion cyclotron parametric…V. S. Mikhailenko, V. V. Mikhailenko, Hae June Lee·Jan 9, 2023SaveLearn
VIPER: A Plasma Wave Detection Instrument onboard Indian Venus Orbiter SpacecraftPlasma waves are observed in almost all the solar system objects. The planetary ionospheres are capable of sustaining plasma waves which are observed there and play an important role in the…Vipin K Yadav·Jan 9, 2023SaveLearn
Streaming Instability Generation in Lunar Plasma EnvironmentPlasma instabilities are the non-linear processes occurring in plasmas when excess energy gets accumulated in a plasma system which is unable to hold it. There are almost 60 known plasma…Mehul Chakraborty, Vipin K. Yadav, Rajneesh Kumar·Jan 6, 2023SaveLearn
Electron heating and radiation in high aspect ratio sub-micron plasma generated by an ultrafast Bessel pulse within a solid dielectricWhen propagating inside dielectrics, an ultrafast Bessel beam creates a high aspect-ratio cylinder of plasma with nanometric diameter that extends over several tens of micrometers to centimeters. We…Kazem Ardaneh, Remo Giust, Pierre-Jean Charpin et al.·Jan 6, 2023SaveLearn
Moment-Fourier approach to ion parallel fluid closures and transport for a toroidally confined plasmaA general method of solving the drift kinetic equation is developed for an axisymmetric magnetic field. Expanding a distribution function in general moments a set of ordinary differential equations…Jeong-Young Ji, Eric D. Held, J. Andrew Spencer et al.·Jan 6, 2023SaveLearn
ATEQ: Adaptive Toroidal Equilibrium codeA radially adaptive numerical scheme is developed to solve the Grad-Shafranov equation for axisymmetric magnetohydrodynamic equilibrium. A decomposition with independent solutions is employed in the…Linjin Zheng, M. T. Kotschenreuther, F. L. Waelbroeck et al.·Jan 6, 2023SaveLearn
Cold plasma waves in the chiral Maxwell-Carroll-Field-Jackiw electrodynamicsIn this work, we study the propagation and absorption of plasma waves in the chiral Maxwell-Carroll-Field-Jackiw (MCJF) electrodynamics. The Maxwell equations are rewritten for a cold, uniform, and…Filipe S. Ribeiro, Pedro D. S. Silva, Manoel M. Ferreira·Jan 5, 2023SaveLearn
Saturation of fishbone instability by self-generated zonal flows in tokamak plasmasGyrokinetic simulations of the fishbone instability in DIII-D tokamak plasmas find that self-generated zonal flows can dominate the nonlinear saturation by preventing coherent structures from…G. Brochard, C. Liu, X. Wei et al.·Jan 4, 2023SaveLearn