Gamma-ray imaging with germanium detectors

Details Gamma-ray imaging with germanium detectors Gamma-ray imaging with germanium detectors

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...97..385m&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 97, no. 1, p. 385-388.

Astronomy and Astrophysics

Astronomy

1

Gamma Ray Astronomy, Germanium, Image Processing, Radiation Detectors, Astronomical Observatories, Balloon-Borne Instruments, Monte Carlo Method, Spaceborne Telescopes, Spectrum Analysis

Scientific paper

Externally segmented germanium detectors promise a breakthrough in gamma-ray imaging capabilities while retaining the superb energy resolution of germanium spectrometers. By combining existing position-sensitive detectors with an appropriate code aperture, two-dimensional imaging with 0.2-deg angular resolution becomes practical for a typical balloon experiment. Much finer resolutions are possible with larger separations between detectors and the coded aperture as would be applicable for space-based or lunar-based observatories. Two coaxial germanium detectors divided into five external segments have been fabricated and have undergone extensive performance evaluation and imaging testing in our laboratory. These tests together with detailed Monte Carlo modeling calculations have demonstrated the great promise of this sensor technology for future gamma-ray missions.

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