Phase-space single electron-hole acceleration
Journal article, 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.

Author

Alejandro Yannick Guillevic

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics

University of Lorraine

M. Lesur

University of Lorraine

D. Mandal

University of Lorraine

Techno India University

X. Garbet

The French Alternative Energies and Atomic Energy Commission (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

European Commission (EC) (101052200), 2021-01-01 -- 2025-12-31.

Subject Categories (SSIF 2025)

Condensed Matter Physics

Fusion, Plasma and Space Physics

DOI

10.1063/5.0246056

More information

Latest update

3/6/2025 6