Top arrow pointing up



Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic

Jun 18, 2021. Publications


Talbot-Lau x-ray interferometry has been implemented to map electron density gradients in High Energy Density Physics (HEDP) experiments. X-ray backlighter targets have been evaluated for Talbot-Lau X-ray Deflectometry (TXD). Cu foils, wires, and sphere targets have been irradiated by 10–150 J, 8–30 ps laser pulses, while two pulsed-power generators (∼350 kA, 350 ns and ∼200 kA, 150 ns) have driven Cu wire, hybrid, and laser-cut x-pinches. A plasma ablation front generated by the Omega EP laser was imaged for the first time through TXD for densities >1023 cm−3. Backlighter optimization in combination with x-ray CCD, image plates, and x-ray film has been assessed in terms of spatial resolution and interferometer contrast for accurate plasma characterization through TXD in pulsed-power and high-intensity laser environments. The results obtained thus far demonstrate the potential of TXD as a powerful diagnostic for HEDP.

M. P. Valdivia, D. Stutman, C. Stoeckl, W. Theobald,   G. W. Collins IV,     V. Bouffetier,   M. Vescovi,   C. Mileham,   I. A. Begishev,     S. R. Klein,   R. Melean,   S. Muller,   J. Zou,     F. Veloso,     A. Casner,     F. N. Beg, and   S. P. Regan

Review of Scientific Instruments 92, 065110 (2021); DOI:

More From Publications

Sep 17, 2021    Publications

Relativistically transparent magnetic filaments: scaling laws, initial results and prospects for strong-field QED studies

Citation H G Rinderknecht et al 2021 New J. Phys. 23 095009

Read more

Aug 5, 2021    Publications

Electron energization during merging of self-magnetized, high-beta, laser-produced plasmas

Journal of Plasma Physics, Volume 87, Issue 4, August 2021, 905870411

Read more

May 14, 2021    Publications

Enhancements in laser-generated hot-electron production via focusing cone targets at short pulse and high contrast

Phys. Rev. E 103, 053207 – Published 14 May 2021

Read more

Oct 8, 2020    Publications

Enhanced spatial resolution of Eljen-204 plastic scintillators for use in rep-rated proton diagnostics

M. J.-E. Manuel et al, Rev. Sci. Instrum. 91, 103301 (2020)

Read more

Sep 17, 2020    Publications

Optimization of radiochromic film stacks to diagnose high-flux laser-accelerated proton beams

Review of Scientific Instruments 91, 093303 (2020)

Read more

May 26, 2020    Publications

Relativistic plasma physics in supercritical fields

Physics of Plasmas 27, 050601 (2020)

Read more