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Hard x-ray continuum crystal spectrograph for inertial confinement fusion (ICF) diagnostics

Review of Scientific Instruments, ISSN: 0034-6748, Vol: 62, Issue: 11, Page: 2709-2718
1991
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  • Citations
    1
    • Citation Indexes
      1

Article Description

We describe absolutely calibrated instrumentation for measuring hard x-ray continuum produced during laser irradiation of ICF targets. The instrumentation includes a crystal spectrograph and two collimated filtered scintillators. The absolutely calibrated crystal spectrograph achieves high sensitivity to x-ray continuum over the energy range of 5 to 35 keV with continuous energy coverage and a resolving power E/ΔE between 20 and 100. Time integrated spectra are recorded and stored electronically on a shot basis using two dimensional charge coupled device (CCD) camera readout of a proximity focused MCP detector close coupled to the x-ray diffracting crystals. The filtered scintillators provide discrete, time-resolved, high energy channels for recording integrated continuum in the 40-60 and 60-90 keV bands. End-to-end calibration of the crystal spectrograph was performed over the design energy interval. We discuss instrument design, calibration, and alignment and the factors affecting sensitivity and resolving power.

Bibliographic Details

A. J. Burek; C. J. Armentrout; C. R. Bird; R. E. Frazier; J. B. Geddes; D. F. Gorzen

AIP Publishing

Physics and Astronomy

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