Elucidating plasma dynamics in Hasegawa-Wakatani turbulence by information geometry
Abstract
The impact of adiabatic electrons on drift-wave turbulence, modelled by the Hasegawa-Wakatani equations, is studied using information length. Information length is a novel theoretical method for measuring distances between statistical states represented by different probability distribution functions (PDFs) along the path of a system. Specifically, the time-dependent PDFs of turbulent fluctuations for a given adiabatic index is computed. The changes in fluctuation statistics are then quantified in time by using information length. The numerical results provide time traces exhibiting intermittent plasma dynamics, and such behaviour is identified by a rapid change in the information length. The effects of are discussed.
Keywords
Cite
@article{arxiv.1908.01006,
title = {Elucidating plasma dynamics in Hasegawa-Wakatani turbulence by information geometry},
author = {Johan Anderson and Eun-jin Kim and Bogdan Hnat and Tariq Rafiq},
journal= {arXiv preprint arXiv:1908.01006},
year = {2020}
}
Comments
23 pages submitted to Physics of Plasmas. arXiv admin note: text overlap with arXiv:1706.02849