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Ray-based cross-beam energy transfer modeling for broadband lasers

Authors :
R. K. Follett
A. Colaïtis
A. G. Seaton
H. Wen
D. Turnbull
D. H. Froula
J. P. Palastro
Source :
Physics of Plasmas. 30:042102
Publication Year :
2023
Publisher :
AIP Publishing, 2023.

Abstract

Broadband lasers have the potential to mitigate cross-beam energy transfer (CBET) in direct-drive inertial confinement fusion (ICF) experiments. A quantitative assessment of the bandwidth required for CBET mitigation necessitates the development of broadband ray-based CBET models that can be implemented in the radiation-hydrodynamic codes that are used to design ICF experiments. Two different approaches to broadband ray-based CBET modeling (discrete and fixed spectrum) are developed and compared to wave-based calculations. Both approaches give good agreement with wave-based calculations in ICF-relevant configurations. Full-scale 3D calculations show that the bandwidth required for adequate CBET mitigation increases with increasing scale and drive intensity.

Subjects

Subjects :
Condensed Matter Physics

Details

ISSN :
10897674 and 1070664X
Volume :
30
Database :
OpenAIRE
Journal :
Physics of Plasmas
Accession number :
edsair.doi...........7b865aa3b40d5cff7c4c60f5c82446d8