Work

Modeling cross-beam energy transfer with sector ray tracing

Year: 2025

Type: article

Abstract: Ray-based cross-beam energy transfer (CBET) models are an essential feature of the radiation-hydrodynamic codes used to simulate inertial confinement fusion implosions, but full 3D ray-based CBET calculations can have a prohibitively high computational cost. Sector ray tracing can be used to reduce the cost by orders of magnitude in cases where the coronal plasma and laser drive can be approximated as spherically symmetric. An extension of sector ray tracing (section ray tracing) can be used to relax the assumption of a spherically symmetric drive while still retaining most of the computational savings of a sector ray trace. We discuss the foundations of sector and section ray tracing and compare them to full ray tracing.

Source: Physics of Plasmas

DOI: 10.1063/5.0253858

Authors: R. K. Follett, I. V. Igumenshchev, A. Colaïtis, J. P. Palastro, D. H. Froula, D. Turnbull

Institutions: Laboratory for Laser Energetics, University of Rochester

Language: English

Topic: Laser-Plasma Interactions and Diagnostics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: U.S. Department of Energy

Awards: G4139577858, G5484809798