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Proceedings Paper

Detection of 1-100 keV x rays from high-intensity 500-fs laser-produced plasmas using charge-coupled devices
Author(s): James Dunn; Bruce KF Young; Alan D. Conder; Richard E. Stewart
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Paper Abstract

We describe a compact, vacuum compatible, large format, charge-coupled device (CCD) camera for scientific imaging and detection of 1 - 100 keV x-rays in experiments at the Lawrence Livermore National Laboratory JANUS-1 ps laser. A standard, front-illuminated, multi-pin phase device with 250 k electron full well capacity, low dark current (10 pA/cm2 at 20 degree(s)C) and low read noise (5 electrons rms) is cooled to -35 degree(s)C to give the camera excellent 15-bit dynamic range and signal-to-noise response. The intensity and x-ray energy linear response have been determined for optical and x-ray (< 65 keV) photons and are found to be in excellent agreement. Departure from linearity has been measured to be less than 0.7%. The inherent linearity and energy dispersive characteristics of CCD cameras are well suited for hard x-ray photon counting techniques in scientific applications. X-rays absorbed within the depletion and field-free regions can be distinguished by studying the pulse height spectrum. Results are presented for the detection of 1 - 100 keV Bremsstrahlung continuum, K-shell and L-shell fluorescence spectra emitted from high intensity (1018 W cm-2), 500 fs laser-produced plasmas.

Paper Details

Date Published: 25 March 1996
PDF: 12 pages
Proc. SPIE 2654, Solid State Sensor Arrays and CCD Cameras, (25 March 1996); doi: 10.1117/12.236091
Show Author Affiliations
James Dunn, Lawrence Livermore National Lab. (United States)
Bruce KF Young, Lawrence Livermore National Lab. (United States)
Alan D. Conder, Lawrence Livermore National Lab. (United States)
Richard E. Stewart, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 2654:
Solid State Sensor Arrays and CCD Cameras
Constantine N. Anagnostopoulos; Morley M. Blouke; Michael P. Lesser, Editor(s)

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