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arXiv · 2411.17908

Vlasov-Poisson simulation study of phase-space hole coalescence in a cylindrically wave-guided plasma

Allen Lobo·Vinod Kumar Sayal
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Abstract

In this work, coalescence of phase-space holes of collision-less, one-dimensional plasmas is studied using kinetic simulation techniques. Phase-space holes are well-known Bernstein-Greene-Kruskal waves known for exhibiting coalescence, are numerically simulated and their coalescence is observed. Relations between the hole speed, potential, phase-space vorticity and phase-space depth are then obtained using the simulation data. This study involves the study of electron phase-space hole coalescence in a cylindrically wave-guided plasma. Using the recently developed phase-space hydrodynamic analogy, it is shown that the coalescence phenomena can be explored in terms of the fluid-analogous vortical nature of the phase-space holes. Coalescence occurs due to the interaction of the phase-space velocity fields associated with these phase-space vortices. Results obtained from the study describes various parametric relations between the coalesced hole characteristics and the characteristics of the colliding holes.

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Allen Lobo, Vinod Kumar Sayal. 2024-11-26. Vlasov-Poisson simulation study of phase-space hole coalescence in a cylindrically wave-guided plasma. https://arxiv.org/abs/2411.17908

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