Design of a multilayer mirror monochromatic x-ray imager for the Z accelerator

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1789257· OSTI ID:20641222

Jones, B; Deeney, C; Pirela, A; Meyer, C; Petmecky, D; Gard, P; Clark, R; Davis, J ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87123 (United States)

A time-resolved pinhole camera is being developed for monochromatic soft x-ray imaging of z-pinch plasmas on the Z accelerator [R. B. Spielman et al., Phys. Plasmas 5, 2105 (1998)] at Sandia National Laboratories. Pinhole images will reflect from a planar multilayer mirror onto a microchannel plate detector. A W/Si or Cr/C multilayer reflects a narrow energy range (full width at half maximum <10 eV) centered at 277 eV with peak reflectivity up to 20%. This choice of energy will allow final implosion imaging of any wire-array z-pinch fielded on Z, as well as bench testing using a carbon K{alpha} source. Aluminized parylene filters will eliminate optical and second harmonic reflection, and the 34 deg. multilayer grazing angle will allow detector shielding from high energy x rays produced by the Z accelerator. The system will also include a standard in-line pinhole camera, which can be filtered to obtain simultaneous higher-photon-energy images. Future instruments could use multiple mirrors to image at several energies, or operate at a low grazing angle to image 1-10 keV K-shell emission.

• OSTI ID: 20641222
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATORS
CARBON
CHROMIUM
EV RANGE 01-10
GRAZING
HARMONIC GENERATION
IMAGES
K SHELL
KEV RANGE 01-10
MIRRORS
MONOCHROMATIC RADIATION
MONOCHROMATORS
PLASMA DIAGNOSTICS
REFLECTIVITY
SHIELDING
SILICON
SOFT X RADIATION
TIME RESOLUTION
TUNGSTEN
X-RAY RADIOGRAPHY