Cooled germanium spectrometers for X- and gamma-ray astronomy

Details Cooled germanium spectrometers for X- and gamma-ray astronomy Cooled germanium spectrometers for X- and gamma-ray astronomy

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ssi.....2..219n&link_type=abstract

(Science Research Council, Symposium on the Techniques of Solar and Cosmic X-Ray Spectroscopy, Dorking, Surrey, England, May 22,

Astronomy and Astrophysics

Astronomy

Cosmic X Rays, Gamma Rays, Spectrometers, X Ray Spectroscopy, Collimation, Cooling Systems, Energy Spectra, Germanium, High Resolution, Satellite-Borne Instruments, Temperature Distribution

Scientific paper

The techniques of applying cooled germanium detectors to obtain high resolution measurements of hard X-ray and gamma-ray spectra from cosmic sources are discussed. Energy resolutions of better than 2 keV (FWHM) in the MeV region are achieved in the laboratory, representing an improvement of about a factor of 40 over conventional scintillators. Recent development of large intrinsic (pure) germanium detectors facilitates the construction of large multiple sensor arrays with sufficient detection sensitivities for gamma-ray astronomy in the MeV region. Hence, germanium detectors provide an effective tool to conduct a stringent search for gamma-ray lines and fine structural features in the presence of a continuum background.

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