Vlasov-Poisson simulation study of phase-space hole coalescence in a cylindrically wave-guided plasma
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| Format: | Preprint |
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2024
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| _version_ | 1866912134300958720 |
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| author | Lobo, Allen Sayal, Vinod Kumar |
| author_facet | Lobo, Allen Sayal, Vinod Kumar |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_17908 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vlasov-Poisson simulation study of phase-space hole coalescence in a cylindrically wave-guided plasma Lobo, Allen Sayal, Vinod Kumar Plasma Physics 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. |
| title | Vlasov-Poisson simulation study of phase-space hole coalescence in a cylindrically wave-guided plasma |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2411.17908 |