X-ray imaging with grazing-incidence microscopes developed for the LIL program

Journal Article · Thu Mar 15 04:00:00 EDT 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2715865· OSTI ID:20953391

Rosch, R; Boutin, J Y; Le Breton, J P; Gontier, D; Jadaud, J P; Reverdin, C; Soullie, G; Lidove, G; Maroni, R ^[1]

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1. CEA/DIF, BP 12, 91680 Bruyeres-Le-Chatel (France)

This article describes x-ray imaging with grazing-incidence microscopes, developed for the experimental program carried out on the Ligne d'Integration Laser (LIL) facility [J. P. Le Breton et al., Inertial Fusion Sciences and Applications 2001 (Elsevier, Paris, 2002), pp. 856-862] (24 kJ, UV--0.35 nm). The design includes a large target-to-microscope (400-700 mm) distance required by the x-ray ablation issues anticipated on the Laser MegaJoule facility [P. A. Holstein et al., Laser Part. Beams 17, 403 (1999)] (1.8 MJ) which is under construction. Two eight-image Kirkpatrick-Baez microscopes [P. Kirkpatrick and A. V. Baez J. Opt. Soc. Am. 38, 766 (1948)] with different spectral wavelength ranges and with a 400 mm source-to-mirror distance image the target on a custom-built framing camera (time resolution of {approx}80 ps). The soft x-ray version microscope is sensitive below 1 keV and its spatial resolution is better than 30 {mu}m over a 2-mm-diam region. The hard x-ray version microscope has a 10 {mu}m resolution over an 800-{mu}m-diam region and is sensitive in the 1-5 keV energy range. Two other x-ray microscopes based on an association of toroidal/spherical surfaces (T/S microscopes) produce an image on a streak camera with a spatial resolution better than 30 {mu}m over a 3 mm field of view in the direction of the camera slit. Both microscopes have been designed to have, respectively, a maximum sensitivity in the 0.1-1 and 1-5 keV energy range. We present the original design of these four microscopes and their test on a dc x-ray tube in the laboratory. The diagnostics were successfully used on LIL first experiments early in 2005. Results of soft x-ray imaging of a radiative jet during conical shaped laser interaction are shown.

• OSTI ID: 20953391
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 78; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DESIGN
HARD X RADIATION
IMAGES
INERTIAL CONFINEMENT
KEV RANGE 01-10
LASERS
MICROSCOPES
MIRRORS
OPTICS
SOFT X RADIATION
SPATIAL RESOLUTION
SPHERICAL CONFIGURATION
STREAK CAMERAS
TIME RESOLUTION
X-RAY TUBES