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Title: Estimation of stagnation performance metrics in magnetized liner inertial fusion experiments using Bayesian data assimilation

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/5.0087115 · OSTI ID:1871989
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  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Univ. of Rochester, NY (United States)
  3. Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, VIC (Australia)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. Univ. of Michigan, Ann Arbor, MI (United States)

Here we present a new analysis methodology that allows for the self-consistent integration of multiple diagnostics including nuclear measurements, x-ray imaging, and x-ray power detectors to determine the primary stagnation parameters, such as temperature, pressure, stagnation volume, and mix fraction in magnetized liner inertial fusion (MagLIF) experiments. The analysis uses a simplified model of the stagnation plasma in conjunction with a Bayesian inference framework to determine the most probable configuration that describes the experimental observations while simultaneously revealing the principal uncertainties in the analysis. We validate the approach by using a range of tests including analytic and three-dimensional MHD models. An ensemble of MagLIF experiments is analyzed, and the generalized Lawson criterion χ is estimated for all experiments.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Science
Grant/Contract Number:
NA0003525
OSTI ID:
1871989
Report Number(s):
SAND2022-5819J; 705761
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 29; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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