5 citations · 9 across the 6 of their papers we have counts for
8 papers
Phase-Space Non-Integrability of Alpha Particles in Near-Omnigeneous Stellarators
A. L. Lachmann, A. R. Knyazev, E. J. Paul
In a burning plasma, fusion-born alpha particles sustain the fusion reaction by heating the plasma core. Alpha-particle confinement in stellarators is sensitive to both deviations…
Nonlinear kinetic closures for linear instabilities
Elizabeth J. Paul, Archis Joglekar, Alexey Knyazev
Landau fluid closures are linear in the evolved moments. We examine the consequences of relaxing linearity. As an example, we introduce the nonlinear exact kinetic response closure…
CATAPULT: A CUDA-Accelerated Timestepper for Alpha Particles Using Local Tricubics
Michael Czekanski, Alexey R. Knyazev, David Bindel +1
We introduce a CUDA-Accelerated Timestepper for Alpha Particles Using Local Tricubics (CATAPULT) for use in Monte Carlo calculations of alpha particle confinement in stellarators.…
On shear Alfvén wave-induced energetic ion transport in optimized stellarators
A. R. Knyazev, A. Lachmann, A. G. Goodman +4
In this work, we investigate prompt ion drift orbit losses caused by shear Alfvén waves (SAW) in quasi-symmetric (QS) and quasi-isodynamic (QI) stellarators optimized for equilibri…
Update on the design of the Columbia Stellarator eXperiment
Antoine Baillod, Avigdor Veksler, Rohan Lopez +4
We present the final configuration chosen to be build for the Columbia Stellarator eXperiment (CSX), a new stellartor experiment at Columbia University. In a recent publication, Ba…
The shear Alfvén continuum of quasisymmetric stellarators
Elizabeth J. Paul, Abdullah Hyder, Eduardo Rodríguez +2
The shear Alfvén wave (SAW) continuum plays a critical role in the stability of energetic particle-driven Alfvén eigenmodes. We develop a theoretical framework to analyze the SAW c…
Three-wave interactions and strange attractor
S. I. Krasheninnikov, A. R. Knyazev
It is shown that the incorporation of linear sink/source terms in the three-wave resonance interaction model results in the time dependence of the wave amplitudes, which could exhi…
Stochastic electron heating in the laser and quasi-static electric and magnetic fields
Yanzeng Zhang, S. I. Krasheninnikov, Alexey Knyazev
The dynamics of relativistic electrons in the intense laser radiation and quasi-static electromagnetic fields both along and across to the laser propagating direction are studied i…