Radiative cooling induced coherent maser emission in relativistic plasmasRelativistic plasmas in strong electromagnetic fields exhibit distinct properties compared to classical plasmas. In astrophysical environments, such as neutron stars, white dwarfs, AGNs, and shocks,…Pablo J. Bilbao, Thales Silva, Luis O. Silva·Sep 27, 2024SaveLearn
Understanding time-resolved images of AWAKE proton bunchesThis article details how images of proton microbunch trains obtained from streak camera measurements may differ from actual microbunch trains inside the plasma, at the plasma exit. We use the same…M. Turner, P. Muggli·Sep 27, 2024SaveLearn
Force Fields for Molecular Dynamics Simulations of Charged Dust Particles with Finite Size in Complex PlasmasTo exclude collisions leading to the overlap of finite-sized charged particles in molecular dynamics (MD) simulations in systems like complex (dusty) plasmas, we developed a scheme to generate a pair…N. Kh. Bastykova, N. E. Djienbekov, T. S. Ramazanov et al.·Sep 26, 2024SaveLearn
Quantum Lattice Representation of Nonlinear Classical PhysicsUsing the Madelung transformation on a generalized scalar Gross-Pitaevski equation, a nonlinear continuum fluid equations are derived for a classical fluid. A unitary quantum lattice algorithm is…Min Soe, George Vahala, Linda Vahala et al.·Sep 26, 2024SaveLearn
A scaling law of the neutral opacity and Balmer-α wing shape in high-temperature plasmasHydrogen atoms penetrating deep inside high-temperature magnetically confined plasmas by repetitive charge-exchange collisions result in a particle source, which affects the plasma performance…Keisuke Fujii, Masahiro Hasuo, Motoshi Goto et al.·Sep 26, 2024SaveLearn
Simulated annealing of reduced magnetohydrodynamic systemsTheory of simulated annealing (SA), a method for equilibrium and stability analyses for Hamiltonian systems, is reviewed. The SA explained in this review is based on a double bracket formulation that…M. Furukawa, P. J. Morrison·Sep 26, 2024SaveLearn
Large radiation back-flux from Monte Carlo simulations of fusion neutron-material interactionsRadiation back-fluxes, generated from neutron-material interactions in fusion power reactors, can dramatically impact the plasma dynamics, e.g., by seeding runaway electrons during disruptions via…Michael A. Lively, Danny Perez, Blas Uberuaga et al.·Sep 25, 2024SaveLearn
Particle-in-cell simulations of expanding high energy density plasmas with laser ray tracingThe design and analysis of high energy density (HED) laser experiments typically rely on radiation hydrodynamics simulations. However, some laser-plasma interaction regimes are not collisional and…K. V. Lezhnin, S. R. Totorica, A. S. Hyder et al.·Sep 25, 2024SaveLearn
Analytical calculation of the kinetic q factor and resonant response of toroidally confined plasmasSymmetry-breaking perturbations in axisymmetric toroidal plasma configurations have a drastic impact on particle, energy, and momentum transport in fusion devices, thereby affecting their confinement…Y. Antonenas, G. Anastassiou, Y. Kominis·Sep 25, 2024SaveLearn
Collimated γ-ray emission enabled by efficient direct laser accelerationWe investigate the mechanisms responsible for single-lobed versus double-lobed angular distributions of emitted γ-rays in laser-irradiated plasmas, focusing on how direct laser acceleration (DLA)…Kavin Tangtartharakul, Gaetan Fauvel, Talia Meir et al.·Sep 24, 2024SaveLearn
Self-mediation of runaway electrons via self-excited wave-wave and wave-particle interactionsNonlinear dynamics of runaway electron induced wave instabilities can significantly modify the runaway distribution critical to tokamak operations. Here we present the first-ever fully kinetic…Qile Zhang, Yanzeng Zhang, Qi Tang et al.·Sep 24, 2024SaveLearn
Modified Bridgman formula for the thermal conductivity of complex (dusty) plasma fluidsA simple and popular Bridgman's formula predicts a linear correlation between the thermal conductivity coefficient and the sound velocity of dense liquids. Unfortunately, it cannot be applied to…Sergey Khrapak, Alexey Khrapak·Sep 24, 2024SaveLearn
Merging dynamics of plasma blobs in the Scrape-off Layer of a tokamakThe emergence and merging of high-density coherent structures - plasma blobs - is a recurrent phenomenon in the Scrape-off layer (SOL) of a tokamak plasma that has a significant impact on the rate of…Souvik Mondal, N Bisai, Abhijit Sen et al.·Sep 23, 2024SaveLearn
Tracing Rayleigh-Taylor instability from measured periodic modulation in laser driven proton beamsRayleigh-Taylor (RT) instability occurs in a variety of scenario as a consequence of fluids of different densities pushing against the density gradient. For example, it is expected to occur in the…Z. Liu, M. K. Zhao, P. L. Bai et al.·Sep 23, 2024SaveLearn
Hamiltonian formulation of X-point collapse in an extended magnetohydrodynamics frameworkThe study of X-point collapse in magnetic reconnection has witnessed extensive research in the context of space and laboratory plasmas. In this paper, a recently derived mathematical formulation of…Hamdi M. Abdelhamid, Manasvi Lingam·Sep 21, 2024SaveLearn
Hall MHD waves: A fundamental departure from their MHD counterpartsIt is demonstrated through a succinct derivation as to how the linear waves in Hall magnetohydrodynamics (HMHD) constitute a fundamental departure from the standard MHD waves. Apart from modifying…Swadesh M. Mahajan, Prerana Sharma, Manasvi Lingam·Sep 21, 2024SaveLearn
Duqtools: Dynamic uncertainty quantification for Tokamak reactor simulations modellingLarge scale validation and uncertainty quantification are essential in the experimental design, control, and operations of fusion reactors. Reduced models and increasing computational power means…Victor Azizi, Stef Smeets, Florian Koechl et al.·Sep 20, 2024SaveLearn
Synthetic measurements of runaway electron synchrotron emission in the SPARC tokamakWith plasma currents up to 8.7 MA, the SPARC tokamak runs the risk of forming multi-MA beams of relativistic "runaway" electrons (REs) which could damage plasma facing components if…R. A. Tinguely, A. M. Rosenthal, M. Silva Sa et al.·Sep 20, 2024SaveLearn
Properties of non-cryogenic DTs and their relevance for fusionIn inertial confinement fusion, pure deuterium-tritium (DT) is usually used as a fusion fuel. In their paper gus2011effect, Guskov et al. instead propose using low-Z compounds that contain DT…Hartmut Ruhl, Christian Bild, Ondrej Pego Jaura et al.·Sep 20, 2024SaveLearn
Effect of gas pressure on plasma asymmetry and higher harmonics generation in sawtooth waveform driven capacitively coupled plasma dischargeUsing particle-in-cell (PIC) simulation technique, the effect of gas pressure (5-500 mTorr) on the plasma spatial asymmetry, ionization rate, metastable gas densities profile, electron energy…Sarveshwar Sharma, Miles Turner, Nishant Sirse·Sep 20, 2024SaveLearn
Electron source based on emergence of self-injected electron bunch at plasma wakefield excitation by a TW laser pulseWakefield acceleration methods are known due to some their advantages. The main of them is the high accelerating gradient up to several teravolts per meter. In the paper another important advantage…D. S. Bondar, V. I. Maslov, I. N. Onishchenko·Sep 20, 2024SaveLearn
Higher-order moment convergent method in weakly anisotropic plasma and the NLVFP code for solution of the 0D-2V Vlasov-Fokker-Planck equationFusion plasma and space plasma are typical non-equilibrium and nonlinear systems, with the interactions between different species well described by the Vlasov-Fokker-Planck (VFP) equations. The…Yanpeng Wang·Sep 19, 2024SaveLearn
Analysis of high-field side plasma instabilities in tokamak edgeBalanced double-null configurations are of general interest for boundary plasma physics, and they have been proposed for some future designs. Experimental observations demonstrate absence of plasma…Maxim V. Umansky·Sep 18, 2024SaveLearn
Single Langmuir Probe Diagnostics DeviceSeeking to improve and innovate the technology currently used in their research work, the Polytechnic University of Puerto Rico Plasma Laboratory designed and built a portable device able to generate…Angel González-Lizardo, Jairo Rondón, Felix A. Cuadrado-Rodríguez·Sep 18, 2024SaveLearn
Turbulence and transport in mirror geometries in the Large Plasma DeviceThanks to advances in plasma science and enabling technology, mirror machines are being reconsidered for fusion power plants and as possible fusion volumetric neutron sources. However cross-field…Phil Travis, Troy Carter·Sep 17, 2024SaveLearn