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Title: Interplay of Laser-Plasma Interactions and Inertial Fusion Hydrodynamics

The effects of laser-plasma interactions (LPI) on the dynamics of inertial confinement fusion hohlraums are investigated in this work via a new approach that self-consistently couples reduced LPI models into radiation-hydrodynamics numerical codes. The interplay between hydrodynamics and LPI—specifically stimulated Raman scatter and crossed-beam energy transfer (CBET)—mostly occurs via momentum and energy deposition into Langmuir and ion acoustic waves. This spatially redistributes energy coupling to the target, which affects the background plasma conditions and thus, modifies laser propagation. In conclusion, this model shows reduced CBET and significant laser energy depletion by Langmuir waves, which reduce the discrepancy between modeling and data from hohlraum experiments on wall x-ray emission and capsule implosion shape.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-696918
Journal ID: ISSN 0031-9007; TRN: US1700993
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1341948
Alternate Identifier(s):
OSTI ID: 1339187

Strozzi, D. J., Bailey, D. S., Michel, P., Divol, L., Sepke, S. M., Kerbel, G. D., Thomas, C. A., Ralph, J. E., Moody, J. D., and Schneider, M. B.. Interplay of Laser-Plasma Interactions and Inertial Fusion Hydrodynamics. United States: N. p., Web. doi:10.1103/PhysRevLett.118.025002.
Strozzi, D. J., Bailey, D. S., Michel, P., Divol, L., Sepke, S. M., Kerbel, G. D., Thomas, C. A., Ralph, J. E., Moody, J. D., & Schneider, M. B.. Interplay of Laser-Plasma Interactions and Inertial Fusion Hydrodynamics. United States. doi:10.1103/PhysRevLett.118.025002.
Strozzi, D. J., Bailey, D. S., Michel, P., Divol, L., Sepke, S. M., Kerbel, G. D., Thomas, C. A., Ralph, J. E., Moody, J. D., and Schneider, M. B.. 2017. "Interplay of Laser-Plasma Interactions and Inertial Fusion Hydrodynamics". United States. doi:10.1103/PhysRevLett.118.025002. https://www.osti.gov/servlets/purl/1341948.
@article{osti_1341948,
title = {Interplay of Laser-Plasma Interactions and Inertial Fusion Hydrodynamics},
author = {Strozzi, D. J. and Bailey, D. S. and Michel, P. and Divol, L. and Sepke, S. M. and Kerbel, G. D. and Thomas, C. A. and Ralph, J. E. and Moody, J. D. and Schneider, M. B.},
abstractNote = {The effects of laser-plasma interactions (LPI) on the dynamics of inertial confinement fusion hohlraums are investigated in this work via a new approach that self-consistently couples reduced LPI models into radiation-hydrodynamics numerical codes. The interplay between hydrodynamics and LPI—specifically stimulated Raman scatter and crossed-beam energy transfer (CBET)—mostly occurs via momentum and energy deposition into Langmuir and ion acoustic waves. This spatially redistributes energy coupling to the target, which affects the background plasma conditions and thus, modifies laser propagation. In conclusion, this model shows reduced CBET and significant laser energy depletion by Langmuir waves, which reduce the discrepancy between modeling and data from hohlraum experiments on wall x-ray emission and capsule implosion shape.},
doi = {10.1103/PhysRevLett.118.025002},
journal = {Physical Review Letters},
number = 2,
volume = 118,
place = {United States},
year = {2017},
month = {1}
}