Gyrokinetic Theory of Linear Gravitational Flute Interchanges with Flow Shear StabilizationA collisionless electrostatic gyrokinetic theory is developed to describe how the presence of a differential velocity shear can help stabilize linear gravitational flute interchanges in slab…Zheng Yang Tan, Ian Abel·Jun 25, 2026SaveLearn
Sawtooth suppression by flux pumping on HBT-EPThis study examines the mechanisms underlying sawtooth suppression in the High Beta Tokamak-Extended Pulse (HBT-EP) device. It is observed that strong-intensity sawtooth activities correlate with…Boting Li, J. P. Levesque, G. A. Navratil et al.·Jun 25, 2026SaveLearn
Collective modes and screening in an electric-magnetic dual plasmaWe study the linear response of an effective relativistic two-fluid medium carrying separately conserved electric and magnetic charge currents. The model is defined by the duality-symmetric Maxwell…Hyeong-Chan Kim·Jun 25, 2026SaveLearn
Ion firehose and ion cyclotron instability with subtracted-Kappa distributionsIn the present paper we discuss numerical solutions of the dispersion relation for electromagnetic waves propagating along the lines of an ambient magnetic field, considering parameters…Luiz F. Ziebell, Rudi Gaelzer, Danny Summers·Jun 25, 2026SaveLearn
A possible approach to overcome the saturation of the neutron yield in a Plasma Focus and to achieve breakevenSaturation of the neutron yield with increasing energy of the condenser bank in a Plasma Focus led to the shutdown of PF research focussed on controlled nuclear fusion in the past. We review…Andrea Di Vita·Jun 25, 2026SaveLearn
Identification of MHD equilibrium β limits for CFQS plasmasThe magnetohydrodynamic (MHD) equilibrium β limits in the Chinese First QuasiAxisymmetric Stellarator (CFQS) are investigated using the NTEC code, for both the standard and the magnetic island…Jian Zhang, Ping Zhu, Haifeng Liu et al.·Jun 25, 2026SaveLearn
The Negative Triangularity Tokamak Path for Fusion Pilot Plants: Experimental Progress and Future ProspectsThis paper reviews the experimental progress of negative triangularity (NT), a tokamak configuration where the poloidal cross-section is a reversed-D shape compared to the conventional positive…K. E. Thome, M. E. Austin, S. Coda et al.·Jun 25, 2026SaveLearn
Kinetic theory of the Thermal Farley-Buneman Instability in the E-region ionosphereThis paper develops a fully kinetic linear theory of the thermal Farley-Buneman instability (TFBI) in the E-region ionosphere with unmagnetized ions. The TFBI combines spatially uniform E-region…Yakov S. Dimant, Meers M. Oppenheim·Jun 25, 2026SaveLearn
Integrating Gyrokinetic Flux Predictions with Ideal MHD Stability BoundariesAccurate prediction of pedestal height and width in tokamaks remains a critical issue as it strongly influences the predicted plasma performance of all future reactors. We present an integrated…J. McClenaghan, K. E. Thome, T. F. Neiser et al.·Jun 24, 2026SaveLearn
Single-Shot Intensity-Correlation Diffractive X-ray Imaging of ICF PlasmasX-ray radiography of inertial confinement fusion plasmas is currently limited to several-micron resolution by geometric blur, diffraction, and photon-throughput tradeoffs. We propose single-shot…Kenan Qu, Daniel Bhatti, Nathaniel J. Fisch·Jun 24, 2026SaveLearn
Laser-intensity-spike-dominated hot electron generation from two-plasmon decay instability driven by moderate-bandwidth pulsesOur direct-drive-relevant experiments on the low-coherence Kunwu laser facility identify two-plasmon decay (TPD) as the primary source of hot electrons, and demonstrate for the first time that…C. Yao, Z. H. Cai, X. Wang et al.·Jun 24, 2026SaveLearn
Numerical thermalization in n-D particle-in-cell simulationsThe particle-in-cell (PIC) simulation method is often understood to solve the collisionless Vlasov equation due to the finite shape of its macroparticles. In reality, it can suffer from artificially…R. M. Park, C. H. Moore, S. D. Baalrud·Jun 24, 2026SaveLearn
Nanosecond-resolved 266 nm Mach-Zehnder interferometry for electron-density measurements of dense plasmas generated in supercritical fluidsWe developed a nanosecond-resolved 266 nm Mach-Zehnder interferometer for electron-density measurements of dense laser-produced plasmas generated in 100-bar supercritical-fluid (SCF) helium. A 1064…Kyusang Cho, Juho Lee, Gunsu Yun·Jun 24, 2026SaveLearn
Constraints on the magnetic field evolution in tokamak power plantsForty-five years ago a coordinate system was shown to exist that gave simple but exact expressions whenever and wherever a toroidal plasma equilibrium ∇p=j×B exists.…Allen H Boozer·Jun 24, 2026SaveLearn
A toroidally spectral field solver in the X-point Gyrokinetic Code for accurate simulation of reduced magneto-hydrodynamic modesA new field solver has been implemented in the global electromagnetic total-f gyrokinetic particle-in-cell code XGC to extend the code's capability to large-scale reduced MHD-type instabilities…Robert Hager, C. S. Chang, Thomas Gade et al.·Jun 23, 2026SaveLearn
OpenMP GPU Acceleration and Portability of TRIMEG-C1 for Electromagnetic Gyrokinetic Simulations in Tokamak PlasmasThe Triangular mesh-based gyrokinetic code TRIMEG-C1 solves the gyrokinetic equations using the particle-in-cell scheme to simulate electromagnetic instabilities in tokamak plasmas. TRIMEG-C1…Giorgio Daneri, Zhixin Lu, Matthias Hoelzl et al.·Jun 23, 2026SaveLearn
Evolution of Quadrupole Wakefield Driven by Transversely Asymmetric Electron Beams in Hollow Plasma ChannelsPlasma wakefield acceleration in hollow plasma channels has emerged as a promising approach for positron acceleration, since an electron beam can drive wakes with a transversely uniform accelerating…Siqin Ding, Jianfei Hua, Fei Li et al.·Jun 23, 2026SaveLearn
Non-Dynamic Alignment in Magnetohydrodynamic TurbulenceDynamic alignment in MHD turbulence is commonly interpreted as a tendency of Elsässer increments to align toward smaller inertial-range scales. This interpretation is based on the amplitude-weighted…Amir Jafari·Jun 23, 2026SaveLearn
Frequency Chirping of Energetic-Particle-Driven Geodesic Acoustic Modes in TokamaksA suprathermal population of ions is present in tokamak plasmas due to external heating mechanisms and fusion reactions. These energetic particles (EPs) can drive waves unstable, via inverse Landau…R. Wu, A. Biancalani, M. V. Falessi et al.·Jun 23, 2026SaveLearn
A coherent structure transport model for scrape-off layer turbulenceUnderstanding the locality of high-temperature plasma energy deposition on material surfaces in fusion reactors is critical for design. Here, we utilize the Gyrokinetic ElectroMagnetic turbulence…Zhichen Feng, James Myra, Junyi Cheng et al.·Jun 23, 2026SaveLearn
Atmospheric carbon-14 production from neutron leakage in fusion energy systemsNeutron-producing fusion systems can generate atmospheric carbon-14 when neutrons leak into nitrogen-containing gas. We use MCNP6.2 neutron-transport calculations to estimate the probability that…Brian James Albright, James Alastair Mercer-Smith·Jun 22, 2026SaveLearn
Design of a Doppler backscattering diagnostic for the Wisconsin HTS Axisymmetric Mirror (WHAM)The Wisconsin HTS Axisymmetric Mirror (WHAM) is a compact high-field magnetic mirror. In such magnetic mirrors, cross-field transport is dominated by the flute instability (Endrizzi et al., 2023). To…E. Wikarta, U. Kumar, V. H. Hall-Chen et al.·Jun 22, 2026SaveLearn
Detachment dynamics and disturbance rejection in the TCV X-Point Target divertorThe X-Point Target divertor is an alternative divertor configuration with a secondary X-point in its divertor volume. In this work, we investigate the dynamic response and disturbance rejection…M. Winkel, K. Verhaegh, B. Kool et al.·Jun 22, 2026SaveLearn
Disambiguation of magnetic sensors in ITERITER will possess approximately 500 magnetic sensors (mainly measuring poloidal flux) distributed across the first wall. The coils are at known locations but the matching signals not necessarily…M. J. Hole, S. D. Pinches, G. Vayakis et al.·Jun 22, 2026SaveLearn
On the accuracy of measurements of electron temperature by Thomson scattering diagnostic in the plasma core of the ITER tokamakThe ITER tokamak project includes a Thomson scattering diagnostic designed to measure electron temperature and density in the plasma core. The system is required to provide measurements over a wide…M. Yu. Kantor·Jun 22, 2026SaveLearn