dorsal/arxiv
View SchemaA global simulation for laser driven MeV electrons in $50\mu m$-diameter fast ignition targets
| Authors | C. Ren, M. Tzoufras, J. Tonge, W. B. Mori, F. S. Tsung, M. Fiore, R. A. Fonseca, L. O. Silva, J. -C. Adam, A. Heron |
|---|---|
| Categories | |
| ArXiv ID | physics/0601200 |
| URL | https://arxiv.org/abs/physics/0601200 |
| DOI | 10.1063/1.2173617 |
Abstract
The results from 2.5-dimensional Particle-in-Cell simulations for the interaction of a picosecond-long ignition laser pulse with a plasma pellet of 50-$\mu m$ diameter and 40 critical density are presented. The high density pellet is surrounded by an underdense corona and is isolated by a vacuum region from the simulation box boundary. The laser pulse is shown to filament and create density channels on the laser-plasma interface. The density channels increase the laser absorption efficiency and help generate an energetic electron distribution with a large angular spread. The combined distribution of the forward-going energetic electrons and the induced return electrons is marginally unstable to the current filament instability. The ions play an important role in neutralizing the space charges induced by the the temperature disparity between different electron groups. No global coalescing of the current filaments resulted from the instability is observed, consistent with the observed large angular spread of the energetic electrons.
{
"annotation_id": "71a80fba-105a-4fae-99d7-cd0e3746f6fc",
"date_created": "2026-03-02T18:01:04.339000Z",
"date_modified": "2026-03-02T18:01:04.339000Z",
"file_hash": "bc09e5f2b33ea29d00aca3a28a6152a2b3e4dc633f73255948c7571e440804d4",
"private": false,
"record": {
"abstract": "The results from 2.5-dimensional Particle-in-Cell simulations for the\ninteraction of a picosecond-long ignition laser pulse with a plasma pellet of\n50-$\\mu m$ diameter and 40 critical density are presented. The high density\npellet is surrounded by an underdense corona and is isolated by a vacuum region\nfrom the simulation box boundary. The laser pulse is shown to filament and\ncreate density channels on the laser-plasma interface. The density channels\nincrease the laser absorption efficiency and help generate an energetic\nelectron distribution with a large angular spread. The combined distribution of\nthe forward-going energetic electrons and the induced return electrons is\nmarginally unstable to the current filament instability. The ions play an\nimportant role in neutralizing the space charges induced by the the temperature\ndisparity between different electron groups. No global coalescing of the\ncurrent filaments resulted from the instability is observed, consistent with\nthe observed large angular spread of the energetic electrons.",
"arxiv_id": "physics/0601200",
"authors": [
"C. Ren",
"M. Tzoufras",
"J. Tonge",
"W. B. Mori",
"F. S. Tsung",
"M. Fiore",
"R. A. Fonseca",
"L. O. Silva",
"J. -C. Adam",
"A. Heron"
],
"categories": [
"physics.plasm-ph"
],
"doi": "10.1063/1.2173617",
"title": "A global simulation for laser driven MeV electrons in $50\\mu m$-diameter fast ignition targets",
"url": "https://arxiv.org/abs/physics/0601200"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "3794e87c-06ee-4890-ab70-2ad11455f60b",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}