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Proceedings Paper

Distributed read-out imaging devices for x-ray imaging spectroscopy
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Paper Abstract

We present an experimental study of the performance of Distributed Read-Out Imaging Devices (DROIDs), 1- and 2-D photon-counting imaging spectrometers, based on Ta/Al-based STJs placed on a Ta absorber. Results obtained with highly collimated illumination with 10 keV X-ray photons clearly demonstrate the imaging capabilities of 2-D DROIDs. The derived spatial FWHM resolution is 7 micrometers for a 200 X 200 micrometers 2 absorber. With a 1-D DROID we have measured an intrinsic energy resolution of 15 eV FWHM for 6 keV photons. At high energies (E > 6 keV) the resolution is limited by spatial fluctuations in the qp recombination rate.

Paper Details

Date Published: 18 July 2000
PDF: 12 pages
Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, (18 July 2000); doi: 10.1117/12.391559
Show Author Affiliations
Roland H. den Hartog, European Space Agency/ESTEC (Netherlands)
Didier D. E. Martin, European Space Agency/ESTEC (Netherlands)
Alex G. Kozorezov, Lancaster Univ. (United Kingdom)
Peter Verhoeve, European Space Agency/ESTEC (Netherlands)
Nicola Rando, European Space Agency/ESTEC (Netherlands)
Anthony J. Peacock, European Space Agency/ESTEC (Netherlands)
G. Brammertz, European Space Agency/ESTEC (Netherlands)
Michael K. Krumrey, Physikalisch-Technische Bundesanstalt (Germany)
D. J. Goldie, Oxford Instruments (United Kingdom)
R. Venn, Cambridge MicroFab Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 4012:
X-Ray Optics, Instruments, and Missions III
Joachim E. Truemper; Bernd Aschenbach, Editor(s)

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