Long-Duration X-Ray Source Development for X-Ray Diffraction at The National Ignition Facility

K Werellapatha,D K Bradley,J.H Eggert,A Krygier,F Coppari,C Krauland,N Bhandarkar,C Heinbockel,A Lazicki,N Masters,G E Kemp,L R Benedetti,M G Gorman,G N Hall,S R Nagel,S F Khan,N E Palmer

doi:10.1109/icops36761.2021.9588386

Long-Duration X-Ray Source Development for X-Ray Diffraction at The National Ignition Facility

K Werellapatha, D K Bradley + Show 15 more

https://doi.org/10.1109/icops36761.2021.9588386

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Publication Date: Sep 12, 2021

Affiliation: Lawrence Livermore National Laboratory, General Atomics (United States)

#National Ignition Facility #Extreme Thermodynamic Conditions + Show 8 more

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Abstract

We investigate the feasibility of producing x-ray sources over timescales relevant to support time-resolved x-ray diffraction (XRDt) measurements during laser-driven dynamic compression experiments at the National Ignition Facility (NIF) [1] . XRDt probes the atomic structure in-situ of transformations at extreme thermodynamic conditions. To record XRD of phase transitions as they occur, we use high-speed (~1 ns) gated hybrid CMOS (hCMOS) imagers [2] , which provide multiple frames of data over a timescale of a few to tens of ns. Consequently, to make effective use of these imagers, the x-ray source needs to be monochromatic and uniform as long as the sensors are active.

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