A Correct Flat Field Model For DARHT

Technical Report · Wed Aug 21 00:00:00 EDT 2019

DOI:https://doi.org/10.2172/1565810· OSTI ID:1565810

Klasky, Marc Louis  ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

The forward modeling approach has been utilized to obtain the density distribution during dynamic radiographic experiments using the Bayesian Inference Engine (BIE) at the Dual Axis Radiographic Hydrodynamic Test Facility (DARHT) for over two decades. The forward modeling approach attempts to incorporate all of the known physics to obtain the transmission, from an unknown density field. The density field is then optimized in an attempt to match the flat-fielded radiographic image using a Chi-squared comparison. A depiction of the forward modeling approach implemented in the BIE is given.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 1565810
• Report Number(s): LA-UR-19-29164
• Country of Publication: United States
• Language: English