Influences of δB Contribution and Parallel Inertial Term of Energetic Particles on MHD-Kinetic Hybrid Simulations: A Case Study of the 1/1 Internal Kink ModeThe magnetohydrodynamic-kinetic (MHD-kinetic) hybrid model [Park et. al., 1992] has been widely applied in studying energetic particles (EPs) problems in fusion plasmas for past decades. The…H. X. Zhang, H. W. Zhang, Z. W. Ma et al.·Jul 31, 2024SaveLearn
On the convergence of bootstrap current to the Shaing-Callen limit in stellaratorsBootstrap current in stellarators can be presented as a sum of a collisionless value given by the Shaing-Callen asymptotic formula and an off-set current, which non-trivially depends on plasma…Christopher G. Albert, Craig D. Beidler, Gernot Kapper et al.·Jul 31, 2024SaveLearn
Kinetic development of low-temperature propane oxidation in a repetitively-pulsed nanosecond dischargeThe kinetics of plasma assisted low temperature oxidation of C3H8O2Ar mixtures have been studied in a wide specific deposition energy with the help of nanosecond repetitively pulsed discharge. Two…Zhenyang Li, Bo Yin, Qifu Lin et al.·Jul 31, 2024SaveLearn
First Access to ELM-free Negative Triangularity at Low Aspect RatioA plasma scenario with negative triangularity (NT) shaping is achieved on MAST-U for the first time. While edge localized modes (ELMs) are eventually suppressed as the triangularity is decreased…A. O. Nelson, C. Vincent, H. Anand et al.·Jul 31, 2024SaveLearn
Turbulent features near the X point of a DTT-like tokamak plasmaThe background magnetic geometry at the edge of a tokamak plasma has to be designed in order to mitigate the particle and energy looses essentially due to turbulent transport. The…F. Cianfrani, G. Montani·Jul 31, 2024SaveLearn
Full Helicon thruster modelingThis research work is part of a PhD project aiming to design a new helicon plasma thruster for cargo space missions, within a collaboration between the School of Aerospace Engineering of La Sapienza…Daniele Iannarelli, Antonella Ingenito, Francesco Napoli et al.·Jul 31, 2024SaveLearn
Optical effects in unmagnetized cold plasmas by a chiral axion factorUnmagnetized cold plasma modes are investigated in the context of the chiral Maxwell-Carroll-Field-Jackiw (MCJF) electrodynamics, where the axion chiral factor acts retrieving some typical properties…Filipe S. Ribeiro, Pedro D. S. Silva, Manoel M. Ferreira·Jul 30, 2024SaveLearn
Polarization state control for high peak power applicationsNumerous applications in the extreme field science are possible with circularly polarized high peak power ultrashort pulses. Commonly used quarter wave plates are not applicable here, while…E. M. Starodubtseva, I. N. Tsymbalov, D. A. Gorlova et al.·Jul 29, 2024SaveLearn
Collisionless zonal-flow dynamics in quasisymmetric stellaratorsThe linear collisionless plasma response to a zonal-density perturbation in quasisymmetric stellarators is studied, including the geodesic-acoustic-mode oscillations and the Rosenbluth--Hinton…Hongxuan Zhu, Z. Lin, A. Bhattacharjee·Jul 28, 2024SaveLearn
A study of an air-breathing electrodeless plasma thruster dischargePlasma chemistry of main air components is implemented in a hybrid 2D axisymmetric simulation code to assess the air-breathing concept in an electrodeless plasma thruster. Relevant electron-heavy…Jiewei Zhou, Francesco Taccogna, Pablo Fajardo et al.·Jul 27, 2024SaveLearn
Use of current-potential patches to obtain fundamental improvements to the coils of magnetic fusion devicesA central issue in the design of tokamaks or stellarators is the coils that produce the external magnetic fields. The freedom that remains unstudied in the design of coils is enormous. This freedom…Allen H Boozer·Jul 26, 2024SaveLearn
Cross-Calibration and First Vertical ECE Measurement of Electron Energy Distribution in the TCV TokamakThis paper describes the first Vertical Electron Cyclotron Emission (V-ECE) measurement of non-thermal electron distributions in the Tokamak à Configuration Variable, TCV. These measurements…A. Tema Biwole, L. Porte, A. Fasoli et al.·Jul 26, 2024SaveLearn
Turbulent transport regimes in the presence of an X-point magnetic configurationWe analyze the transport properties of the two-dimensional electrostatic turbulence characterizing the edge of a Tokamak device from the study of test particles motion (passive fluid tracers)…Fabio Moretti, Nakia Carlevaro, Francesco Cianfrani et al.·Jul 26, 2024SaveLearn
Application of interpretable machine learning for cross-diagnostic inference on the ST40 spherical tokamakMachine learning models are exceptionally effective in capturing complex non-linear relationships of high-dimensional datasets and making accurate predictions. However, their intrinsic…Tadas Pyragius, Cary Colgan, Hazel Lowe et al.·Jul 26, 2024SaveLearn
Transmission characteristics of millimeter and sub-terahertz channels through spatially ripple plasma sheath layersThe propagation of millimeter wave (MMW) and sub-terahertz (THz) signals through plasma sheaths is a critical concern for maintaining communication with hypersonic vehicles, yet the impact of complex…Wenbo Liu, Peian Li, Da Li et al.·Jul 26, 2024SaveLearn
Interaction of driven "cold" electron plasma wave with thermal bulk mediated by spatial ion inhomogeneityUsing high resolution Vlasov - Poisson simulations, evolution of driven ``cold" electron plasma wave (EPW) in the presence of stationary inhomogeneous background of ions is studied. Mode coupling…Sanjeev Kumar Pandey, Rajaraman Ganesh·Jul 25, 2024SaveLearn
The zonal-flow residual does not tend to zero in the limit of small mirror ratioThe intensity of the turbulence in tokamaks and stellarators depends on its ability to excite and sustain zonal flows. Insight into this physics may be gained by studying the…Eduardo Rodriguez, Gabriel G Plunk·Jul 25, 2024SaveLearn
Ion-electron instabilities in the precursor of weakly magnetized, transrelativistic shocksCollisionless shocks are known to induce turbulence via upstream ion reflection within the precursor region. This study elucidates the properties of electrostatic and electromagnetic instabilities,…Théo Abounnasr·Jul 24, 2024SaveLearn
Interplay between the non-resonant streaming instability and self-generated pressure anisotropiesThe non-thermal particles escaping from collisionless shocks into the surrounding medium can trigger a non-resonant streaming instability that converts parts of their drift kinetic energy into large…Alexis Marret, Andrea Ciardi, Roch Smets·Jul 23, 2024SaveLearn
Impact of electron trapping on stimulated Raman scattering under incoherent broadband laser light in homogeneous plasmaBackward stimulated Raman scattering is a three-wave coupling instability requiring the matching of an incoming pump light wave to a scattered light wave and electron plasma wave. It can be harmful…David Rhys Blackman, Vladimir Tikhonchuk, Ondrej Klimo et al.·Jul 23, 2024SaveLearn
MHD activity induced coherent mode excitation in the edge plasma region of ADITYA-U TokamakIn this paper, we report the excitation of coherent density and potential fluctuations induced by magnetohydrodynamic (MHD) activity in the edge plasma region of ADITYA-U Tokamak. When the amplitude…Kaushlender Singh, Suman Dolui, Bharat Hegde et al.·Jul 23, 2024SaveLearn
Characterization of the SCR-1 Stellarator Physics: Investigating Plasma Discharge, MHD Equilibrium Calculations, and O-X-B Mode Conversion FeasibilityThe Stellarator de Costa Rica 1 (SCR-1) is a modular stellarator with a small aspect ratio that serves as a valuable research and training tool for plasma magnetic confinement. This study explored a…R. Solano-Piedra, V. I. Vargas, L. A. Araya-Solano et al.·Jul 23, 2024SaveLearn
Larmor radius effect on the control of chaotic transport in tokamaksWe investigate the influence of the finite Larmor radius on the dynamics of guiding-center test particles subjected to an E × B drift in a large aspect-ratio tokamak. For…L. A. Osorio-Quiroga, M. Roberto, R. L. Viana et al.·Jul 22, 2024SaveLearn
Control of Instability in a Vlasov-Poisson System Through an External Electric FieldPlasma instabilities are a major concern in plasma science, for applications ranging from particle accelerators to nuclear fusion reactors. In this work, we consider the possibility of controlling…Lukas Einkemmer, Qin Li, Clément Mouhot et al.·Jul 20, 2024SaveLearn
The Role of Helical and Non-Helical Drives on the evolution of Self-Consistent DynamosIn the self-consistent dynamo limit, the magnetic feedback on the velocity field is sufficiently strong to induce a change in the topology of the magnetic field. Consequently, the magnetic energy…Shishir Biswas, Rajaraman Ganesh·Jul 20, 2024SaveLearn