Non-thermal fusion burning processes, relevant collective modes and gained perspectives

TL;DR

This paper explores complex, oscillatory plasma structures called non-separable ballooning modes, their unique resonance interactions with particles, and the implications for energy transfer in inhomogeneous plasmas.

Contribution

It introduces a new class of tridimensional plasma modes with non-separable amplitudes and analyzes their resonance conditions and energy transfer mechanisms.

Findings

Identification of non-separable ballooning modes in plasma

Distinct resonance conditions involving mode geometry

Potential for energy transfer among particle populations

Abstract

New tridimensional plasma structures, that are oscillatory and classified as non-separable ballooning modes, can emerge in inhomogeneous plasmas and undergo resonant mode-particle interactions, e.g., with a minority population, that can lead them to modify their spatial profiles. Thus, unlike the case of previously known ballooning modes their amplitudes are not separable functions of time and space. The relevant resonance conditions are intrinsically different from those of the well-known Landau conditions for (ordinary) plasma waves: they involve the mode geometry and affect different regions of the distribution in momentum space at different positions in configuration space. A process for a transfer of energy among different particle populations is envisioned