Analysis of streaked images of x-ray self-emission in laser-driven spherical implosions

Smith, E. A. [University of Rochester, NY (United States)] (ORCID:0009000992825125); Bishel, D. T. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000337422509); Chin, D. A. [University of Rochester, NY (United States)] (ORCID:0000000301187690); Signor, M. E. [University of Rochester, NY (United States)] (ORCID:0000000290225435); Kim, H. [University of Rochester, NY (United States)] (ORCID:0009000460944289); LaPierre, A. J. [University of Rochester, NY (United States)] (ORCID:0000000282552567); Kabadi, N. V. [University of Rochester, NY (United States)] (ORCID:0000000273153636); Ruby, J. J. [University of Rochester, NY (United States)] (ORCID:0000000329072350); Williams, C. A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)] (ORCID:0000000224819008); Slakes, D. [University of Rochester, NY (United States)]; Ivancic, S. [University of Rochester, NY (United States)] (ORCID:0000000194724226); Rygg, J. R. [University of Rochester, NY (United States)] (ORCID:0000000206057847); Collins, G. W. [University of Rochester, NY (United States)] (ORCID:0000000154366866)

doi:10.1063/5.0286001

DOE OSTI · 2997978

Analysis of streaked images of x-ray self-emission in laser-driven spherical implosions

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Abstract

Imaging of x-ray self-emission provides a powerful in situ measurement of the spatial and temporal evolution of high-energy-density plasmas. However, interpretation of these measurements requires detailed understanding of the data-generating process. This work presents a case study in the interpretation of x-ray self-emission data for the specific application of streaked one-dimensional slit imaging of spherical laser-driven implosions. A comprehensive generative model of the streaked slit-imaging diagnostic is developed including detailed treatments of the radiation transfer, photometrics, and photostatistics associated with the measurement. The model is used to generate realistic synthetic streaked images and to analyze experimental streaked images to extract important physical quantities of interest. An example analysis of streaked images from implosion experiments on the OMEGA laser is presented, where the model developed in this work is used to constrain the trajectory and peak velocity of the implosion using Bayesian inference.

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Bayesian inference Fusion experiments High energy density physics High-energy X rays Photocathodes Radiative transfer Statistical analysis Streak cameras X-ray diagnostics

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Smith, E. A. [University of Rochester, NY (United States)] (ORCID:0009000992825125), Bishel, D. T. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000337422509), Chin, D. A. [University of Rochester, NY (United States)] (ORCID:0000000301187690), Signor, M. E. [University of Rochester, NY (United States)] (ORCID:0000000290225435), Kim, H. [University of Rochester, NY (United States)] (ORCID:0009000460944289), LaPierre, A. J. [University of Rochester, NY (United States)] (ORCID:0000000282552567), Kabadi, N. V. [University of Rochester, NY (United States)] (ORCID:0000000273153636), Ruby, J. J. [University of Rochester, NY (United States)] (ORCID:0000000329072350), Williams, C. A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)] (ORCID:0000000224819008), Slakes, D. [University of Rochester, NY (United States)], Ivancic, S. [University of Rochester, NY (United States)] (ORCID:0000000194724226), Rygg, J. R. [University of Rochester, NY (United States)] (ORCID:0000000206057847), Collins, G. W. [University of Rochester, NY (United States)] (ORCID:0000000154366866). 2025-10-03. Analysis of streaked images of x-ray self-emission in laser-driven spherical implosions. https://doi.org/10.1063/5.0286001

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