Geometry effects on zonal flow dynamics and turbulent transport in optimized stellaratorsGlobal gyrokinetic simulations find a strong suppression of ion temperature gradient (ITG) turbulence by zonal flows in stellarators optimized for neoclassical transport. The reduction of the ITG…Haotian Chen, Xishuo Wei, Hongxuan Zhu et al.·May 28, 2025SaveLearn
Simulations of the churning mode: toroidally symmetric plasma convection and turbulence around the X-points in a snowflake divertorUsing a reduced MHD model, extended to include field-aligned thermal conduction, we present numerical simulations of the churning mode (CM): a toroidally symmetric, non-linear plasma vortex in the…D Power, M V Umansky, V A Soukhanovskii·May 27, 2025SaveLearn
Numerical asymptotics of near-axis expansions of quasisymmetric magnetohydrostatic equilibria with anisotropic pressureQuasisymmetry (QS) is a property of special magnetic configurations, where the magnetic field strength, but not necessarily the full vector field, has a direction of symmetry. QS leads to reduced…Lanke Fu, Eduardo Rodriguez, Rory Conlin et al.·May 26, 2025SaveLearn
Approximating the Particle Distribution in Rotating and Tandem Mirror TrapsSteady state distribution functions can be used to calculate stability conditions for modes, radiation energy losses, and particle loss rates. Heuristic analytic approximations to these distributions…Greta X. Li, Elijah J. Kolmes, Ian E. Ochs et al.·May 26, 2025SaveLearn
An electric circuital analysis of laboratory plasma sheath fluctuations and propagationsThe effective inductive (L), capacitive (C), and resistive (R) behavior of a plasma sheath in a conjoint coupled form is well familiar among plasma physics communities. A dynamic sheath instability…Subham Dutta, Pralay Kumar Karmakar·May 26, 2025SaveLearn
Understanding Plasma Turbulence Through Exact Coherent StructuresPlasma turbulence is a key challenge in understanding transport phenomena in magnetically confined plasmas. This work presents a novel approach using periodic orbit theory to analyze plasma…Sidney D. V. Williams, Matthew N. Gudorf, Dmitri M. Orlov·May 25, 2025SaveLearn
Plasma fireball sheath dynamics: A brief review and meta-analysisWe present a comprehensive overview of the formation mechanism of plasma fireball sheath (PFS) structures, sheath-induced collective phenomena, associated relevant instabilities, and corresponding…Subham Dutta, Ahmed Atteya, Pralay Kumar Karmakar·May 25, 2025SaveLearn
First Demonstration of Resonant Pitch-Angle Scattering of Relativistic Electrons by Externally-Launched Helicon WavesHelicon waves satisfying the normal wave-particle cyclotron resonance are observed to limit the growth and maximum energy of relativistic electrons (REs) in low-density Ohmic DIII-D tokamak plasmas.…H. Choudhury, A. Battey, C. Paz-Soldan et al.·May 25, 2025SaveLearn
Properties of Pair Plasmas Emerging from Electromagnetic Showers in MatterElectromagnetic showers from high-energy electron beams interacting with a target are a promising path to creating pair plasmas in the laboratory. Here, we solve analytically the kinetic equations…M. Pouyez, G. Nicotera, M. Galbiati et al.·May 24, 2025SaveLearn
Ionization potential depression model with the influence of neighboring ions for warm/hot and dense plasmaFor warm or hot and dense plasma, ionization potential depression plays a crucial role in determining the ionization balance and understanding the resulting microscopic plasma properties. However,…Chensheng Wu, Jiao Sun, Qinghe Song et al.·May 24, 2025SaveLearn
Modelling cosmic-ray transport: magnetised versus unmagnetised motion in astrophysical magnetic turbulenceCosmic-ray transport in turbulent astrophysical environments remains a multifaceted problem and, despite decades of study, the impact of complex magnetic field geometry -- evident in simulations and…Jeremiah Lübke, Patrick Reichherzer, Sophie Aerdker et al.·May 23, 2025SaveLearn
Image rotation in plasmasBecause of the speed of light compared to material motion, the dragging of light is difficult to observe under laboratory conditions. Here we report on the first observation of image rotation, i. e.…Renaud Gueroult, Shreekrishna K. Tripathi, Jia Han et al.·May 23, 2025SaveLearn
Tightening energetic bounds on linear gyrokinetic instabilitiesBounding energetic growth of gyrokinetic instabilities is a complementary approach to linear instability analyses involving normal eigenmodes. Previous work has focused on upper bounds which are…P. J. Costello, G. G. Plunk·May 23, 2025SaveLearn
Modification of the uniform electron gas polarizational stopping power due to the interaction of the projectile with new collective modes at moderate and strong couplingThis paper presents a detailed study of the polarizational stopping power of a homogeneous electron gas in moderate and strong coupling regimes using the self-consistent version of the method of…S. A. Syzganbayeva, A. V. Filinov, Jesus Ara et al.·May 22, 2025SaveLearn
Atomic oxygen densities in He/O2 micro-scaled atmospheric pressure plasma jets: a systematic model validation studyReactive species produced by atmospheric pressure plasma jets have high application potential in the fields of biomedicine and surface processing. An extensive validation between the simulation…Youfan He, Ralf Peter Brinkmann, Efe Kemaneci et al.·May 21, 2025SaveLearn
Structural States of Filamentary Microgravity Dusty PlasmaThis study investigates the filamentary structural states of microgravity dusty plasma using data from the Plasmakristall-4 (PK-4) facility on board the International Space Station. The dust…Emerson Gehr, Abigail Terrell, Katrina Vermillion et al.·May 20, 2025SaveLearn
Spatiotemporal plasma hologramWe present the first experimental realization of a four-dimensional (4D) plasma hologram capable of recording and reconstructing the full spatiotemporal information of intense laser pulses. The…Zhaohui Wu, Hao Peng, Xiaoming Zeng et al.·May 19, 2025SaveLearn
A new approach for solving the problem of creation of inverse electron distribution function and practical recommendations for experimental searches for such media in glow discharges with hollow and flat cathodesThis paper proposes a novel approach for creating an inverse electron distribution function (EDF). Based on the obtained criteria for the formation of an inverse EDF in a non-uniform plasma, studies…Chengxun Yuan, E. A. Bogdanov, A. A. Kudryavtsev et al.·May 19, 2025SaveLearn
Application of the Portable Diagnostic Package to the Wisconsin High-temperature-superconducting Axisymmetric Mirror (WHAM)We present an application of the Portable Diagnostic Package (PDP) on the Wisconsin HTS Axisymmetric Mirror (WHAM), which integrates an optical emission spectroscopy (OES) system and an active…Keisuke Fujii, Douglass Endrizzi, Jay K. Anderson et al.·May 16, 2025SaveLearn
Generalized Kappa Distribution Function for Mixed Fermiom-Boson Quantum PlasmasA Kappa distribution function applicable to systems comprising mixed fermions and bosons has been developed through the thermodynamic Gibbs potential utilizing the quantum versions of the Olbert…Aakanksha Singh, Abhisek Kumar Singh, Punit Kumar·May 16, 2025SaveLearn
Conservative velocity mappings for discontinuous Galerkin kineticsContinuum computational kinetic plasma models evolve the distribution function of a plasma species fs on a phase-space grid over time. In many problems of interest the distribution function has…Manaure Francisquez, Petr Cagas, Akash Shukla et al.·May 15, 2025SaveLearn
Enhanced energy gain through higher-order resonances during direct laser acceleration with superluminal phase velocityUltra-high intensity laser-plasma interactions can produce ultra-relativistic electrons via direct laser acceleration, assisted by quasi-static plasma magnetic and electric fields. These fields…I-Lin Yeh, Kavin Tangtartharakul, Rohan Bhakta et al.·May 15, 2025SaveLearn
Comparison of high-order moment models for the ion dynamics in a bounded low-temperature plasmaLow-temperature plasmas often present non-equilibrium ion distribution functions due to the collisions with the background gas and the presence of strong electric fields. This non-equilibrium is…Anatole Berger, Thierry Magin, Anne Bourdon et al.·May 15, 2025SaveLearn
Resonant theory of kinetic ballooning modes in general toroidal geometryThe linear theory of the kinetic-ballooning-mode (KBM) instability is extended to capture a weakly-driven regime in general toroidal geometry where the destabilization is caused by the magnetic-drift…P. Mulholland, A. Zocco, M. C. L. Morren et al.·May 15, 2025SaveLearn
Reconstructing the Plasma Boundary with a Reduced Set of DiagnosticsThis study investigates the feasibility of reconstructing the last closed flux surface (LCFS) in the DIII-D tokamak using neural network models trained on reduced input feature sets, addressing an…M. S. Stokolesov, M. R. Nurgaliev, I. P. Kharitonov et al.·May 15, 2025SaveLearn