Publications (8)
Benchmark for two-dimensional large scale coherent structures in partially magnetized ExB plasmas -- Community collaboration & lessons learned
Andrew T. Powis, Eduardo Ahedo, Alejandro Ãlvarez Laguna +38
Low-temperature plasmas are essential to both fundamental scientific research and critical industrial applications. As in many areas of science, numerical simulations have become a…
A unified framework for X-shaped radio galaxies
David Garofalo, Ravi Joshi, Xiaolong Yang +3
We propose a radically different picture for X-shaped radio galaxies compared to existing models as transition objects between cold mode accreting low spinning retrograde black hol…
Extensions and Applications of the Bohm Criterion
Scott D. Baalrud, Brett Scheiner, Benjamin Yee +2
The generalized Bohm criterion is revisited in the context of incorporating kinetic effects of the electron and ion distribution functions into the theory. The underlying assumptio…
RLAX: Large-Scale, Distributed Reinforcement Learning for Large Language Models on TPUs
Runlong Zhou, Lefan Zhang, Shang-Chen Wu +29
Reinforcement learning (RL) has emerged as the de-facto paradigm for improving the reasoning capabilities of large language models (LLMs). We have developed RLAX, a scalable RL fra…
Simulations of ion heating due to ion-acoustic instabilities in the presheath
Lucas Beving, Matthew Hopkins, Scott Baalrud
Particle-in-cell direct simulation Monte Carlo simulations reveal that ion-acoustic instabilities excited in presheaths can cause significant ion heating. Ion-acoustic instabilitie…
Theory and simulation of anode spots in low pressure plasmas
Brett Scheiner, Edward Barnat, Scott Baalrud +2
When electrodes are biased above the plasma potential, electrons accelerated through the associated electron sheath can dramatically increase the ionization rate of neutrals near t…