X-ray and gamma-ray imaging with monolithic CdZnTe detector arrays

F. Patrick Doty; Stan J. Friesenhahn; Jack F. Butler; Paul L. Hink

doi:10.1117/12.158756

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1 November 1993 X-ray and gamma-ray imaging with monolithic CdZnTe detector arrays

F. Patrick Doty, Stan J. Friesenhahn, Jack F. Butler, Paul L. Hink

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Proceedings Volume 1945, Space Astronomical Telescopes and Instruments II; (1993) https://doi.org/10.1117/12.158756
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

CdZnTe crystals useful for room temperature x-ray astronomy detectors have recently been developed. Uniform response and good energy resolution in the 3 to 300 keV range have been demonstrated for large area detectors and monolithic arrays. Spectral resolution of 2.9 keV for the 59.5 keV ²⁴¹Am line, and resolved 661 keV peak from ¹³⁷Cs were recently achieved at room temperature. Gain deviations of 1.2% were measured for the elements over a large area monolithic array. Imaging results from a 32 X 32 array with active area of 12.4 cm² are presented. The stability, uniformity, producibility and size of the crystals, and the properties of the resulting nuclear radiation detectors make CdZnTe an attractive candidate for applications in the space sciences.

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F. Patrick Doty, Stan J. Friesenhahn, Jack F. Butler, and Paul L. Hink "X-ray and gamma-ray imaging with monolithic CdZnTe detector arrays", Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993); https://doi.org/10.1117/12.158756

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