Computer Science – Performance
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.356...27c&link_type=abstract
In ESA, Proceedings of an ESA Symposium on Photon Detectors for Space Instrumentation p 27-31 (SEE N94-15025 03-19)
Computer Science
Performance
Arrays, Astronomical Spectroscopy, Cadmium Tellurides, Line Spectra, Solid State Devices, Spectrometers, Design Analysis, Imaging Techniques, Radiation Detectors
Scientific paper
The results of missions such as SIGMA and CGRO have convincingly demonstrated the need for fine spectroscopy and imaging in high energy astronomy. A possible answer to these requirements could be offered by Position Sensitive Detectors (PSD) based on modular arrays of Cadmium Telluride (CdTe) micro-spectrometers. CdTe is a room temperature compound semiconductor with high Z that can be formed into small devices acting as X and gamma ray spectrometers. PSD's based on CdTe would offer fine intrinsic spatial resolution (down to a few millimeters), good spectroscopic performance (less than 2% FWHM energy resolution at 511 keV) and high efficiency in the 10 keV to 5 MeV range. Experimental results obtained on CdTe micro-detectors with different geometrical shapes and size and on a sample of 5 by 5 units packed in a bidimensional array are presented. A design for assembling CdTe units in arrays of large detection area is suggested together with an evaluation of the achievable efficiency.
Baldazzi Giuseppe
Caroli Ezio
Di Cocco Guido
Donati Alessandro
Dusi Waldes
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