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.
Distributed read-out imaging devices for x-ray imaging spectroscopy
X-Ray Optics, Instruments, and Missions III ; 2000 ; Munich,Germany
Proc. SPIE ; 4012
2000-07-18
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Distributed read-out imaging devices for x-ray imaging spectroscopy [4012-23]
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