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

Journal Article · · Physical Review Letters

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.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1341948
Alternate ID(s):
OSTI ID: 1339187
Report Number(s):
LLNL-JRNL-696918; TRN: US1700993
Journal Information:
Physical Review Letters, Vol. 118, Issue 2; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (15)

Impact of the Langdon effect on crossed-beam energy transfer journal December 2019
Examining the radiation drive asymmetries present in the high foot series of implosion experiments at the National Ignition Facility journal May 2017
Mitigation of cross-beam energy transfer in symmetric implosions on OMEGA using wavelength detuning journal June 2017
Effective suppression of parametric instabilities with decoupled broadband lasers in plasma journal November 2017
A tesselation-based model for intensity estimation and laser plasma interactions calculations in three dimensions journal March 2018
Cross-beam energy transfer: On the accuracy of linear stationary models in the linear kinetic regime journal May 2018
Implosion shape control of high-velocity, large case-to-capsule ratio beryllium ablators at the National Ignition Facility journal July 2018
Real and complex valued geometrical optics inverse ray-tracing for inline field calculations journal March 2019
Investigation on laser plasma instability of the outer ring beams on SGIII laser facility journal September 2019
Ultra-high (>30%) coupling efficiency designs for demonstrating central hot-spot ignition on the National Ignition Facility using a Frustraum journal August 2019
Adaptive inverse ray-tracing for accurate and efficient modeling of cross beam energy transfer in hydrodynamics simulations journal July 2019
A unified modeling of wave mixing processes with the ray tracing method journal September 2019
Saturation of cross-beam energy transfer for multispeckled laser beams involving both ion and electron dynamics journal August 2019
Kinetic physics in ICF: present understanding and future directions journal April 2018
Effective suppression of parametric instabilities with decoupled broadband lasers in plasma text January 2017

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