Research
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Higher-order nonequilibrium term: Effective power density quantifying evolution towards or away from local thermodynamic equilibrium
Abstract
A common approach to assess the nature of energy conversion in a classical fluid or plasma is to compare power densities of the various possible energy conversion mechanisms. A leading research area is quantifying energy conversion for s...
Publication · March 28, 2025
Scale Filtering Analysis of Collisionless Reconnection and its Associated Turbulence
Abstract
Previously, using an incompressible von Karman–Howarth formalism, the behavior of cross-scale energy transfer in magnetic reconnection and turbulence was found to be essentially identical to each other, independent of an external magneti...
Publication · March 28, 2025
Electron Dissipation and Electromagnetic Work
Abstract
With the increase in technical capabilities of computer simulation in recent years, it has become feasible to quantify the degradation of fluid scale plasma and electromagnetic energies in favor of increases of internal energies. While i...
Publication · March 28, 2025
Using direct laboratory measurements of electron temperature anisotropy to identify the heating mechanism in electron-only guide field magnetic reconnection
Abstract
Anisotropic electron heating during electron-only magnetic reconnection with a large guide magnetic field is directly measured in a laboratory plasma through in situ measurements of electron velocity distribution functions. Electron heat...
Publication · March 28, 2025
Statistics of Pressure Fluctuations in Turbulent Kinetic Plasmas
Abstract
In this study, we explore the statistics of pressure fluctuations in kinetic collisionless turbulence. A 2.5D kinetic particle-in-cell simulation of decaying turbulence is used to investigate pressure balance via the evolution of thermal...
Publication · March 28, 2025
Strategies for determining the cascade rate in MHD turbulence: isotropy, anisotropy, and spacecraft sampling
Abstract
Exact laws for evaluating cascade rates, tracing back to the Kolmogorov "4/5" law, have been extended to many systems of interest including magnetohydrodynamics (MHD), and compressible flows of the magnetofluid and ordinary fluid types. ...
Publication · March 28, 2025
Turbulent Energy Transfer and Proton-Electron Heating in Collisionless Plasmas
Abstract
Despite decades of study of high-temperature weakly collisional plasmas, a complete understanding of how energy is transferred between particles and fields in turbulent plasmas remains elusive. Two major questions in this regard are how ...
Publication · March 28, 2025
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