An evaluation of the possible use of CdTe microdetectors for astrophysical, biomedical and industrial imaging

Details An evaluation of the possible use of CdTe microdetectors for astrophysical, biomedical and industrial imaging An evaluation of the possible use of CdTe microdetectors for astrophysical, biomedical and industrial imaging

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nimpa.322..644b&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 322, Issue 3, p. 644-650.

Physics

6

Scientific paper

Various imaging techniques in fields as diverse as astrophysical research, biomedical diagnostics and industrial tomography are closely related to the development of γ-ray detectors with improved spectral and imaging performances. From this point of view, cadmium telluride solid state detectors are very promising due to their capability to operate at room temperature, their high stopping power and their possibility of miniaturization. The necessity to have contemporaneously good efficiency and high spatial resolution demands that these microdetectors are produced in a novel manner, where the polarization of the applied electric field is perpendicular to the direction of the incoming radiation. In this way, it is possible to achieve a good charge collection efficiency and hence a high energy resolution, together with a high absorption thickness while at the same time having a spatial resolution commensurate with the detector size of about 2×2 mm2. The results of measurements regarding the energy resolution of various sizes of μdetector, ranging from 2×2×2 mm3 to 2.5×2.5×20 mm3, are presented and discussed.

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