DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Investigating the impact of intermediate-mode perturbations on diagnosing plasma conditions in DT cryogenic implosions via synthetic x-ray Thomson scattering

Journal Article · · Plasma Physics and Controlled Fusion

The pursuit of inertial confinement fusion ignition target designs requires precise experimental validation of the conditions within imploding capsules, in particular the density and temperature of the compressed shell. Previous work has identified x-ray Thomson scattering (XRTS) as a viable diagnostic tool for inferring the in-flight compressed deuterium-tritium shell conditions during capsule implosions (Poole et al 2022 Phys. Plasmas 29 072703). However, this study focused on one-dimensional simulations, which do not account for the growth of hydrodynamic instabilities. In this work, two-dimensional DRACO simulations incorporating intermediate-mode perturbations up to Legendre mode l = 50 were used to generate synthetic XRTS spectra with the SPECT3D code. The analysis employed Markov-Chain Monte Carlo techniques to infer plasma conditions from these spectra. The results demonstrate that the XRTS diagnostic platform can effectively discern the in-flight compressed shell conditions for targets with varying adiabats, even in the presence of intermediate-mode perturbations. This work underscores the potential of XRTS for realistic inertial confinement fusion experiments, providing a robust method for probing the complex dynamics of fusion implosions.

Research Organization:
University of Rochester, NY (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
NA0004144
OSTI ID:
2504603
Journal Information:
Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 1 Vol. 67; ISSN 0741-3335
Publisher:
IOP ScienceCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

SPECT3D – A multi-dimensional collisional-radiative code for generating diagnostic signatures based on hydrodynamics and PIC simulation output journal May 2007
Simulation of X-ray scattering diagnostics in multi-dimensional plasma journal September 2013
Yield and compression trends and reproducibility at NIF* journal August 2020
Probing dense plasmas for HEDS and ICF* journal June 2024
Inertial-confinement fusion with lasers journal May 2016
Publisher Correction: Demonstration of a hydrodynamically equivalent burning plasma in direct-drive inertial confinement fusion journal June 2024
Tripled yield in direct-drive laser fusion through statistical modelling journal January 2019
Three-dimensional HYDRA simulations of National Ignition Facility targets journal May 2001
Electronic structure measurements of dense plasmas journal May 2004
Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA journal May 2005
Diagnosing direct-drive, shock-heated, and compressed plastic planar foils with noncollective spectrally resolved x-ray scattering journal December 2007
Nuclear imaging of the fuel assembly in ignition experiments journal May 2013
Improving the hot-spot pressure and demonstrating ignition hydrodynamic equivalence in cryogenic deuterium–tritium implosions on OMEGA journal May 2014
Sensitivity of inertial confinement fusion hot spot properties to the deuterium-tritium fuel adiabat journal February 2015
Improved non-local electron thermal transport model for two-dimensional radiation hydrodynamics simulations journal August 2015
Direct-drive inertial confinement fusion: A review journal November 2015
Wavelength-detuning cross-beam energy transfer mitigation scheme for direct drive: Modeling and evidence from National Ignition Facility implosions journal May 2018
Inverse problem instabilities in large-scale modeling of matter in extreme conditions journal November 2019
Development of the indirect‐drive approach to inertial confinement fusion and the target physics basis for ignition and gain journal November 1995
Mitigation of mode-one asymmetry in laser-direct-drive inertial confinement fusion implosions journal April 2021
Causes of fuel–ablator mix inferred from modeling of monochromatic time-gated radiography of OMEGA cryogenic implosions journal January 2022
A case study of using x-ray Thomson scattering to diagnose the in-flight plasma conditions of DT cryogenic implosions journal July 2022
Understanding the fusion yield dependencies in OMEGA DT-layered implosion experiments using a physics-based statistical mapping model journal January 2023
Review of hydrodynamic instability experiments in inertially confined fusion implosions on National Ignition Facility journal October 2019
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas journal January 2020
Direct-drive implosion physics: Results from OMEGA and the National Ignition Facility journal March 2016
Electron Density Fluctuations in a Plasma journal December 1960
Effect of laser illumination nonuniformity on the analysis of time-resolved x-ray measurements in uv spherical transport experiments journal October 1987
Measurements of the temperature and velocity of the dense fuel layer in inertial confinement fusion experiments journal May 2022
Design of the first fusion experiment to achieve target energy gain G>1 journal February 2024
Theoretical model of x-ray scattering as a dense matter probe journal February 2003
Plasmon resonance in warm dense matter journal August 2008
Comparison between x-ray scattering and velocity-interferometry measurements from shocked liquid deuterium journal April 2013
First-principles opacity table of warm dense deuterium for inertial-confinement-fusion applications journal September 2014
First-principles equation of state of polystyrene and its effect on inertial confinement fusion implosions journal October 2015
X-ray scattering measurements on imploding CH spheres at the National Ignition Facility journal July 2016
In-Flight Measurements of Capsule Shell Adiabats in Laser-Driven Implosions journal July 2011
Inelastic X-Ray Scattering from Shocked Liquid Deuterium journal December 2012
Design of a High-Foot High-Adiabat ICF Capsule for the National Ignition Facility journal February 2014
2D X-Ray Radiography of Imploding Capsules at the National Ignition Facility journal May 2014
Azimuthal Drive Asymmetry in Inertial Confinement Fusion Implosions on the National Ignition Facility journal April 2020
Lawson Criterion for Ignition Exceeded in an Inertial Fusion Experiment journal August 2022
Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment journal February 2024
Multimessenger measurements of the static structure of shock-compressed liquid silicon at 100 GPa journal May 2024
X-ray Thomson scattering in high energy density plasmas journal December 2009
Target Development for the National Ignition Campaign journal February 2016
The National Ignition Facility Diagnostic Set at the Completion of the National Ignition Campaign, September 2012 journal February 2016