The impact of adiabatic electrons on drift-wave turbulence, modeled 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 and represents the total number of statistically different states that a system evolves through in time. Specifically, the time-dependent PDFs of turbulent fluctuations for a given adiabatic index A are 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 behavior is identified by a rapid change in the information length. The effects of A are discussed.
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Research Article| February 07 2020
Elucidating plasma dynamics in Hasegawa–Wakatani turbulence by information geometry
Johan Anderson ;
Eun-jin Kim ;
Johan Anderson, Eun-jin Kim, Bogdan Hnat, Tariq Rafiq; Elucidating plasma dynamics in Hasegawa–Wakatani turbulence by information geometry. Phys. Plasmas 1 February 2020; 27 (2): 022307. https://doi.org/10.1063/1.5122865
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