Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic
- Johns Hopkins Univ., Baltimore, MD (United States)
- Univ. of Rochester, NY (United States)
- Univ. of California San Diego, CA (United States)
- Univ. de Bordeaux-CNRS-CEA, Talence (France)
- Pontificia Univ. Catolica de Chile, Santiago (Chile)
- Univ. of Michigan, Ann Arbor, MI (United States)
- General Atomics, San Diego, CA (United States)
- CEA-CESTA (France)
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. Furthermore, the results obtained thus far demonstrate the potential of TXD as a powerful diagnostic for HEDP.
- Research Organization:
- Johns Hopkins Univ., Baltimore, MD (United States); Univ. of California San Diego, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- NA0003882; NA0003842; NA0002955; SC0020005; 1171412; NA0004028
- OSTI ID:
- 1837686
- Alternate ID(s):
- OSTI ID: 1797613; OSTI ID: 1887291
- Journal Information:
- Review of Scientific Instruments, Vol. 92, Issue 6; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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