Available Energy of Trapped Electrons and Its Relation to Turbulent Transport

R.J.J. Mackenbach (Corresponding author), Josefine H.E. Proll, P. Helander

Research output: Contribution to journalArticleAcademicpeer-review

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Any collisionless plasma possesses some “available energy” (AE), defined as that part of the thermal energy that can be converted into instabilities and turbulence. Here, we present a calculation of the AE carried by magnetically trapped electrons in a flux tube of collisionless plasma. The AE is compared with nonlinear simulations of the energy flux resulting from collisionless turbulence driven by trapped-electron modes in various magnetic geometries. The numerical calculation of AE is rapid and shows a strong correlation with the simulated energy fluxes, which can be expressed as a power law and understood in terms of a simple model.
Original languageEnglish
Article number175001
Number of pages6
JournalPhysical Review Letters
Issue number17
Publication statusPublished - 29 Apr 2022


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