Implementation of a Talbot–Lau x-ray deflectometer diagnostic platform for the OMEGA EP laser

Implementation of a Talbot–Lau x-ray deflectometer diagnostic platform for the OMEGA EP laser

A Talbot–Lau X-ray Deflectometer (TXD) was implemented in the OMEGA EP laser facility to characterize the evolution of an irradiated foil ablation front by mapping electron densities >1022 cm−3 by means of Moiré deflectometry. The experiment used a short-pulse laser (30–100 J, 10 ps) and a foil c...

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Veröffentlicht in:Review of scientific instruments 2020-02, Vol.91 (2), p.023511-023511
Hauptverfasser: Valdivia, M. P., Stutman, D., Stoeckl, C., Mileham, C., Zou, J., Muller, S., Kaiser, K., Sorce, C., Keiter, P. A., Fein, J. R., Trantham, M., Drake, R. P., Regan, S. P.
Format: Artikel
Sprache:eng
Schlagworte:
Ablation
Bremsstrahlung
computer simulation
Diagnostic systems
electronic noise
Foils
Gratings
high energy density physics
interferometry
Lasers
Mapping
MATERIALS SCIENCE
Moire deflectometer
OTHER INSTRUMENTATION
Parameter modification
Scientific apparatus & instruments
x-rays
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Zusammenfassung:A Talbot–Lau X-ray Deflectometer (TXD) was implemented in the OMEGA EP laser facility to characterize the evolution of an irradiated foil ablation front by mapping electron densities >1022 cm−3 by means of Moiré deflectometry. The experiment used a short-pulse laser (30–100 J, 10 ps) and a foil copper target as an x-ray backlighter source. In the first experimental tests performed to benchmark the diagnostic platform, grating survival was demonstrated and x-ray backlighter laser parameters that deliver Moiré images were described. The necessary modifications to accurately probe the ablation front through TXD using the EP-TXD diagnostic platform are discussed.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.5123919