Derivation of Dirac Exchange Interaction Potential from Quantum Plasma Kinetic TheoryThe Dirac exchange interaction is derived from recent quantum kinetic theory for collisionless plasmas. For this purpose, the kinetic equation is written in the semiclassical and long wavelength…Fernando Haas·May 2, 2024SaveLearn
Theoretical study of dissociative recombination and vibrational excitation of the BF2+ ion by an electron impactCross-sections for dissociative recombination and electron-impact vibrational excitation of the BF+2 molecular ion are computed using a theoretical approach that combines the normal modes…V. Kokoouline, M. Ayouz, J. Zs. Mezei et al.·May 2, 2024SaveLearn
Suppression of temperature-gradient-driven turbulence by sheared flows in fusion plasmasStarting from the assumption that saturation of plasma turbulence driven by temperature-gradient instabilities in fusion plasmas is achieved by a local energy cascade between a long-wavelength outer…P. G. Ivanov, T. Adkins, D. Kennedy et al.·May 1, 2024SaveLearn
Angular momentum gain by electrons under action of intense structured lightThe problem of light waves interaction with charged particles becomes more and more complex starting with the case of plane waves, where the analytical solution is well known, to more natural, though…Egor Dmitriev, Philipp Korneev·May 1, 2024SaveLearn
Implementation of a Mesh refinement algorithm into the quasi-static PIC code QuickPICPlasma-based acceleration (PBA) has emerged as a promising candidate for the accelerator technology used to build a future linear collider and/or an advanced light source. In PBA, a trailing or…Q. Su, F. Li, W. An et al.·May 1, 2024SaveLearn
Thermal fluid closures and pressure anisotropies in numerical simulations of plasma wakefield accelerationWe investigate the dynamics of plasma-based acceleration processes with collisionless particle dynamics and non negligible thermal effects. We aim at assessing the applicability of fluid-like models,…Daniele Simeoni, Andrea Renato Rossi, Gianmarco Parise et al.·Apr 30, 2024SaveLearn
Unified Framework of Forced Magnetic Reconnection and Alfven ResonanceA unified linear theory that includes forced reconnection as a particular case of Alfvén resonance is presented. We consider a generalized Taylor problem in which a sheared magnetic field is subject…D. Urbanski, A. Tenerani, F. L. Waelbroeck·Apr 30, 2024SaveLearn
Three-dimensional plasmoid-mediated reconnection and turbulence in Hall magnetohydrodynamicsPlasmoid instability accelerates reconnection in collisional plasmas by transforming a laminar reconnection layer into numerous plasmoids connected by secondary current sheets in two dimensions (2D)…Yi-Min Huang, Amitava Bhattacharjee·Apr 30, 2024SaveLearn
Effect of detachment on Magnum-PSI ELM-like pulses: I. Direct observations and qualitative resultsConditions similar to those at the end of the divertor leg in a tokamak were replicated in the linear plasma machine Magnum-PSI. The neutral pressure in the target chamber is then increased to cause…Fabio Federici, Bruce Lipschultz, Gijs R. A. Akkermans et al.·Apr 30, 2024SaveLearn
Correlations between X-rays, Visible Light and Drive-Beam Energy Loss Observed in Plasma Wakefield Acceleration Experiments at FACET-IIThis study documents several correlations observed during the first run of the plasma wakefield acceleration experiment E300 conducted at FACET-II, using a single drive electron bunch. The…Chaojie Zhang, Doug Storey, Pablo San Miguel Claveria et al.·Apr 30, 2024SaveLearn
Gyrokinetic investigation of toroidal Alfven eigenmode (TAE) turbulenceToroidal Alfvén eigenmodes (TAEs) can transport fusion-born energetic particles out of the plasma volume, thereby decreasing plasma self-heating efficiency and possibly damaging reactor walls.…Ajay C. J., Ben McMillan, Arkaprava Bokshi et al.·Apr 29, 2024SaveLearn
Rapid Computation of the Plasma Dispersion Function: Rational and Multi-pole Approximation, and Improved AccuracyThe plasma dispersion function Z(s) is a fundamental complex special integral function widely used in the field of plasma physics. The simplest and most rapid, yet accurate, approach to calculating…Huasheng Xie·Apr 29, 2024SaveLearn
High Fidelity simulations of the multi-species Vlasov equation in the electro-static, collisional-less limitThe accurate prediction of occurrence and strength of kinetic instabilities in plasmas remains a significant challenge in nuclear fusion research. To accurately capture the plasmas dynamics one is…Rostislav-Paul Wilhelm, Jan Eifert, Manuel Torrilhon·Apr 29, 2024SaveLearn
Analytical approach to the design of RF photoinjectorThe objective of this thesis is to ascertain the dimensions of an RF 2.856GHz photoinjector through a combination of analytical and computational approaches. The phase velocity within a single cavity…Kiwan Park·Apr 29, 2024SaveLearn
Structure-preserving particle methods for the Landau collision operator using the metriplectic frameworkWe present a novel family of particle discretisation methods for the nonlinear Landau collision operator. We exploit the metriplectic structure underlying the Vlasov-Maxwell-Landau system in order to…Sandra Jeyakumar, Michael Kraus, Matthew J. Hole et al.·Apr 29, 2024SaveLearn
A Plasma-Based Approach for High-Power Tunable Microwave VaractorsThis work presents a tunable varactor with tunability in the range of 100s of MHz and a capacitance delta of about 36 pF by employing a perpendicular magnetic field to a capacitively-coupled (CCP) RF…Samsud Moon·Apr 28, 2024SaveLearn
Numerical dissipation induced by the low-pass filtering in nonlinear gyrokinetic simulationsDe-aliasing is an essential procedure for eliminating the aliasing error in nonlinear simulations, such as nonlinear gyrokinetic turbulence simulations. An ideal approach to de-aliasing in the…Zihao Wang, Shaojie Wang·Apr 28, 2024SaveLearn
On the importance of slow ions in the kinetic Bohm criterionBetween a plasma and a solid target lies a positively charged sheath of several Debye lengths λ D in width, typically much smaller than the characteristic length scale L of the main plasma.…Alessandro Geraldini, Stephan Brunner·Apr 26, 2024SaveLearn
A quasi-linear model of electromagnetic turbulent transport and its application to flux-driven transport predictions for STEPA quasi-linear reduced transport model is developed from a database of high-β electromagnetic nonlinear gyrokinetic simulations performed with Spherical Tokamak for Energy Production (STEP)…M. Giacomin, D. Dickinson, W. Dorland et al.·Apr 26, 2024SaveLearn
Statistical theory of the broadband two-plasmon decay instabilityThere is renewed interest in direct-drive inertial confinement fusion, following the milestone December 2022 3.15 MJ ignition result on the National Ignition Facility. A key obstacle is the control…Rusko T. Ruskov, Robert Bingham, Luis O. Silva et al.·Apr 26, 2024SaveLearn
Application of Lagrangian techniques for calculating the on-axis rotational transformThe Floquet exponents of periodic field lines are studied through the variations of the magnetic action on the magnetic axis, which is assumed to be elliptical. The near-axis formalism developed by…S. Guinchard, W. Sengupta, S. R. Hudson·Apr 26, 2024SaveLearn
Implementation of matrix compression in the coupling of JOREK to realistic 3D conducting wall structuresJOREK is an advanced non-linear simulation code for studying MHD instabilities in magnetically confined fusion plasmas and their control and/or mitigation. A free-boundary and resistive wall…Federico Cipolletta, Nina Schwarz, Matthias Hoelzl et al.·Apr 25, 2024SaveLearn
Reduced turbulent transport in the quasi-isodynamic stellarator configuration CIEMAT-QI4CIEMAT-QI4 is a quasi-isodynamic stellarator configuration that simultaneously features very good fast-ion confinement in a broad range of β values, low neoclassical transport and bootstrap…J. M. García-Regaña, I. Calvo, E. Sánchez et al.·Apr 25, 2024SaveLearn
Elastic properties of three-dimensional Yukawa or dust crystals from molecular dynamics simulationsThis paper presents the calculation of elastic properties of three-dimensional Yukawa or dust crystals using molecular dynamics (MD) simulations. The elastic properties are computed by deforming…Sandeep Kumar·Apr 25, 2024SaveLearn
Prediction of Performance and Turbulence in ITER Burning Plasmas via Nonlinear Gyrokinetic Profile PredictionBurning plasma performance, transport, and the effect of hydrogen isotope on confinement has been predicted for ITER baseline scenario (IBS) conditions using nonlinear gyrokinetic profile…N. T. Howard, P. Rodriguez-Fernandez, C. Holland et al.·Apr 25, 2024SaveLearn