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

作者信息

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

机构信息

Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.

出版信息

Rev Sci Instrum. 2020 Feb 1;91(2):023511. doi: 10.1063/1.5123919.

DOI:10.1063/1.5123919

PMID:32113451

Abstract

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 >10 cm 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.

摘要