Phase-space single electron-hole acceleration
Artikel i vetenskaplig tidskrift, 2025

Single electron-hole dynamics in a one-dimensional plasma composed of two species, electrons and protons, with reduced mass ratio, is investigated through numerical kinetic Vlasov-Maxwell simulations. The electron-hole's growth of phasetrophy and acceleration are systematically studied as a function of different plasma and electron-hole parameters such as electron drift velocity vd, initial hole velocity δvh, electric potential amplitude ϕ0, and gradients of the distribution functions f'e,h and f'i,h. A first parameter scan shows two different regimes of positive exponential increase for the electron-holes growth-rate at both positive and negative gradient sides of the electron distribution function. Linear growth of an electron-hole is observed as a function of both ion and electron distribution functions. Moreover, two power laws are measured as a function of the electric potential amplitude in both low- and high-amplitude regimes. Finally, a qualitative agreement between measurements of phasetrophy growth-rate against an effective gradient is found, the latter considering variations and effects of the electron distribution function gradient over the electron-hole's width.

Författare

Alejandro Yannick Guillevic

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

University of Lorraine

M. Lesur

University of Lorraine

D. Mandal

University of Lorraine

Techno India University

X. Garbet

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

School of Physical and Mathematical Sciences

E. Gravier

University of Lorraine

G. Lo-Cascio

University of Lorraine

A. Ghizzo

University of Lorraine

T. Réveillé

University of Lorraine

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 32 2 022117

Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium

Europeiska kommissionen (EU) (101052200), 2021-01-01 -- 2025-12-31.

Ämneskategorier (SSIF 2025)

Den kondenserade materiens fysik

Fusion, plasma och rymdfysik

DOI

10.1063/5.0246056

Mer information

Senast uppdaterat

2025-03-06