Yield degradation due to laser drive asymmetry in D3He backlit proton radiography experiments at OMEGA

Johnson, T. M.; Birkel, A.; Ramirez, H. E.; Sutcliffe, G. D.; Adrian, P. J.; Glebov, V. Yu.; Sio, H.; Johnson, M. Gatu; Frenje, J. A.; Petrasso, R. D.; Li, C. K.

doi:10.1063/5.0043004

Title: Yield degradation due to laser drive asymmetry in D³He backlit proton radiography experiments at OMEGA

Journal Article · Fri Apr 23 00:00:00 EDT 2021 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0043004· OSTI ID:1860667

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Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Univ. of Rochester, NY (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Mono-energetic proton radiography is a vital diagnostic for numerous high-energy-density-physics, inertial-confinement-fusion, and laboratory-astrophysics experiments at OMEGA. With a large number of campaigns executing hundreds of shots, general trends in D³He backlighter performance are statistically observed. Each experimental configuration uses a different number of beams and drive symmetry, causing the backlighter to perform differently. Here, we analyze the impact of these variables on the overall performance of the D³He backlighter for proton-radiography studies. This study finds that increasing laser drive asymmetry can degrade the performance of the D³He backlighter. The results of this study can be used to help experimental designs that use proton radiography.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344; NA0003868; NA0003938

OSTI ID:: 1860667

Alternate ID(s):: OSTI ID: 1780119

Report Number(s):: LLNL-JRNL-825678; 1038413; TRN: US2305409

Journal Information:: Review of Scientific Instruments, Vol. 92, Issue 4; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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