Elucidating plasma dynamics in Hasegawa-Wakatani turbulence by information geometry

Johan Anderson, Eun-jin Kim, Bogdan Hnat, Tariq Rafiq

Research output: Contribution to journalArticle

2 Citations (Scopus)


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.

Original languageEnglish
Article number022307
Pages (from-to)1-9
Number of pages9
JournalPhysics of Plasmas
Issue number2
Early online date7 Feb 2020
Publication statusPublished - 7 Feb 2020

ASJC Scopus subject areas

  • Condensed Matter Physics

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