Peter H. Yoon studies the kinetic theory of plasmas, including the electron velocity distributions observed in the solar wind. His 2014 paper relates the Kappa distribution, with its comparatively large high-velocity tail, to a self-consistent description of weak plasma turbulence.
The paper extends the calculation to electrostatic fluctuations associated with Langmuir waves, often called quasi-thermal noise. It thereby connects a particle distribution to the fluctuations with which the particles interact, rather than simply choosing an empirical tail and leaving the field unspecified. The author affiliations identify the University of Maryland and Kyung Hee University.[ref]
Electron kappa distribution and quasi-thermal noise by Peter H. Yoon. 2014, author affiliations and abstract: steady-state weak-turbulence solution and electrostatic fluctuations
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