4 papers
Frequency-inference method for reduced modeling of energetic particle modes (EPM) utilizing resonant auto-optimization remnants of imperfect time-scale separation
Andreas Bierwage, Vinícius N. Duarte, Pablo Oyola +2
Integrated codes simulating interactions between Alfvén waves and fast ions in tokamak plasmas use perturbative models for the relatively slow processes of instability growth, satu…
Behavior of kinetic instabilities in a dynamically forming resonant distribution
E. J. Hartigan-O'Connor, T. Barberis, E. G. Devin +2
Instabilities driven by energetic particles are central to the physics of a burning plasma. The majority of kinetic simulations and reduced models assume that the unstable distribu…
Nonlinear evolution of perturbatively driven kinetic instabilities far from marginal stability
Emma G. Devin, Vinícius N. Duarte
Kinetic instabilities develop when a system's distribution function deviates from thermal equilibrium in such a way that allows free energy from that distribution to drive resonant…
Perturbative model for the saturation of energetic-particle-driven modes limited by self-generated zonal modes
Tommaso Barberis, Vinícius N. Duarte, Eamon J. Hartigan-O'Connor +1
We present a simplified approach enforcing energy conservation to incorporate the effects of zonal modes alongside wave-particle nonlinearities in the determination of the saturati…