Preventing ash from poisoning proton-boron 11 fusion plasmasProton-Boron 11 (pB11) fusion is safe and clean, but also difficult to harness for breakeven power production. Particularly deleterious are fusion-born alpha particles, which massively increase both…Ian E. Ochs, Elijah J. Kolmes, Nathaniel J. Fisch·Feb 18, 2025SaveLearn
Learning Plasma Dynamics and Robust Rampdown Trajectories with Predict-First Experiments at TCVThe rampdown phase of a tokamak pulse is difficult to simulate and often exacerbates multiple plasma instabilities. To reduce the risk of disrupting operations, we leverage advances in Scientific…Allen M. Wang, Alessandro Pau, Cristina Rea et al.·Feb 17, 2025SaveLearn
The Brillouin flow in a smooth-bore magnetron fed by split cathodeExplosive emission from an axial cathode of a relativistic magnetron produces plasma, the radial expansion of which can cause pulse shortening. In a split cathode fed magnetron, the electron source…Y. Bliokh, J. G. Leopold, Ya. E. Krasik·Feb 17, 2025SaveLearn
How does ion temperature gradient turbulence depend on magnetic geometry? Insights from data and machine learningMagnetic geometry has a significant effect on the level of turbulent transport in fusion plasmas. Here, we model and analyze this dependence using multiple machine learning methods and a dataset of >…Matt Landreman, Jong Youl Choi, Caio Alves et al.·Feb 17, 2025SaveLearn
Enhancing Stellarator Accessibility through Port Size OptimizationAccess to the plasma chamber in a stellarator reactor is essential for maintenance and diagnostics. However, the complex geometry of stellarator coils, often characterized by their strong twisting,…A. Baillod, E. J. Paul, T. Elder et al.·Feb 17, 2025SaveLearn
For a New Department of Energy lab to examine laser fusion for energyThis paper gives a summary of a talk by the author at the mini-conference entitled Progress in Making IFE-based Concepts a Reality at the APS-DPP meeting in Atlanta in October, 2024. It argues…Wallace Manheimer·Feb 17, 2025SaveLearn
Exploring nonlinearities in a positive ion-negative ion (PINI) plasma: can other processes mimic debris-induced effects?In this work, an analysis of nonlinear waves and structures induced by an external charged debris in a positive ion-negative ion (PINI) plasma is presented. The results obtained are compared with…Hitendra Sarkar, Madhurjya P. Bora·Feb 16, 2025SaveLearn
Multiscale autonomous forecasting of plasma systems' dynamics using neural networksPlasma systems exhibit complex multiscale dynamics, resolving which poses significant challenges for conventional numerical simulations. Machine learning (ML) offers an alternative by learning…Farbod Faraji, Maryam Reza·Feb 16, 2025SaveLearn
Comparison between electrostatic PP and PIC simulations on electron bunch expansionWith the great development of parallel computing techniques, the particle-particle (PP) model has been successfully applied in a number of plasma applications. Comparing to particle-mesh (PM) models,…Yanan Zhang, Xiaochun Ma, Hui Liu et al.·Feb 15, 2025SaveLearn
Ionization potential depression and Fermi barrier in warm dense matter--a first--principles approachIonization potential depression (IPD) is of crucial importance to understand and accurately predict the properties of dense partially ionized plasmas. Many models of IPD have been developed that,…Michael Bonitz, Linda Kordts·Feb 14, 2025SaveLearn
The effect of the electron's spin magnetic moment on quantum radiation in strong electromagnetic fieldsUltra-intense laser pulses can create sufficiently strong fields to probe quantum electrodynamics effects in a novel regime. By colliding a 60 GeV electron bunch with a laser pulse focussed to the…Louis A. Ingle, Christopher D. Arran, Matthew Oxley et al.·Feb 14, 2025SaveLearn
Towards Transparent and Accurate Plasma State Monitoring at JETControlling and monitoring plasma within a tokamak device is complex and challenging. Plasma off-normal events, such as disruptions, are hindering steady-state operation. For large devices, they can…Andrin Bürli, Alessandro Pau, Thomas Koller et al.·Feb 14, 2025SaveLearn
GREENY: A Full-F 2D Gyrofluid Reconnection CodeWe present the 2D gyrofluid magnetic reconnection code GREENY (Gyrofluid Reconnection with Extended Electromagnetic Nonlinearity). After a brief introduction to gyrofluids, magnetic reconnection, and…F. F. Locker, M. Held, T. Stocker-Waldhuber et al.·Feb 14, 2025SaveLearn
Investigation of Turbulent Transport in Non-Stabilized Plasma at the Edge of the GOLEM TokamakPlasma turbulent transport was investigated at the edge of the GOLEM tokamak. For this purpose, ion saturation current fluctuations were measured by means of Langmuir probes. Plasma stabilization was…I. Nanobashvili, V. Svoboda, S. Nanobashvili et al.·Feb 14, 2025SaveLearn
Coupling and Acceleration of Externally Injected Electron Beams in Laser-Driven Plasma WakefieldsThe multi-stage method of laser wakefield acceleration (LWFA) presents a promising approach for developing stable, full-optical, high-energy electron accelerators. By segmenting the acceleration…Srimanta Maity, Pavel Sasorov, Alexander Molodozhentsev·Feb 14, 2025SaveLearn
A novel computation of the linear plasma response to a resonant error field in single-fluid rotating visco-resistive MHDThis paper reexamines the linear plasma response to a static resonant error field (EF) in the single-fluid rotating visco-resistive magneto-hydrodinamic (MHD). A tearing-mode stable, rotating plasma…Paolo Zanca·Feb 14, 2025SaveLearn
Optimizing stellarators with hidden symmetryStellarators confine fusion plasmas using three-dimensional magnetic fields composed of nested toroidal magnetic surfaces. In generic stellarators, trapped particles can drift across these surfaces…Hengqian Liu, Guodong Yu, Caoxiang Zhu et al.·Feb 13, 2025SaveLearn
A Renewable Double Plasma Mirror For Petawatt-class LasersExceptional pulse contrast can be critical for ultraintense laser experiments, particularly when using solid density targets, and their use is becoming widespread. However, current plasma mirror…Nick Czapla, Derek M. Nasir, Lieselotte Obst-Huebl et al.·Feb 13, 2025SaveLearn
Modelling of shattered pellet injection experiments on the ASDEX Upgrade tokamakIn a shattered pellet injection (SPI) system the penetration and assimilation of the injected material depends on the speed and size distribution of the SPI fragments. ASDEX Upgrade (AUG) was…Ansh Patel, Akinobu Matsuyama, Gergely Papp et al.·Feb 13, 2025SaveLearn
Scaling Law for Discharges in Z pinch DevicesWe consider the snowplow model for studying discharges in Z pinch devices. In this context, to obtain a complete picture on the physics of those discharges, we replenish the term disregarded in the…Miguel Cárdenas, Alejandro Nettle, Leandro Núñez·Feb 12, 2025SaveLearn
Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasmaThe effects of the initial spin orientation on the final electron beam polarization via laser wakefield acceleration in pre-polarized plasma are investigated theoretically and numerically. From a…L. R. Yin, X. F. Li, Y. J. Gu et al.·Feb 12, 2025SaveLearn
Continuous high-yield fast neutron generation with few-cycle laser pulses at 10 Hz for applicationsWe present a laser-based neutron source that produces 1.8 × 105 neutrons/s with a conversion rate of 7.8 × 105 neutrons/J. Laser pulses of 12 fs and 23 mJ were focused onto a…L. Stuhl, P. Varmazyar, Z. Elekes et al.·Feb 12, 2025SaveLearn
Towards the generation of petawatt near-infrared few-cycle light pulses via forward Raman amplification in plasmaLight amplification towards extremely high power in the infrared regime remains a significant challenge due to the lack of suitable gain media. Here we propose a new scheme to amplify a laser pulse…Zhi-Yu Lei, Zheng-Ming Sheng, Su-Ming Weng et al.·Feb 12, 2025SaveLearn
Numerical Model of Thermionic- and Photo- emission Electron Heat SpreadingThermionic emission has been exploited to give rise to the theory of thermionic cooling also known as electron transpiration cooling, which can potentially serve as a powerful and engineerable…Indronil Ghosh, Timothy S. Fisher·Feb 11, 2025SaveLearn
New Plasma Sheath Potential Solutions in Cylindrical and Spherical CoordinatesLeading edges of hypersonic vehicles can reach temperatures greater than 2000 °C, and radii of curvature smaller than 1 cm, at which thermionic emission (also known as electron transpiration) can…Indronil Ghosh, Timothy S. Fisher·Feb 11, 2025SaveLearn