A Ge(Li) Spectrometer for Gamma Ray Astronomy

A Ge(Li) Spectrometer for Gamma Ray Astronomy

A space-borne instrument to measure the spectral and temporal characteristics of astronomical γ-rays in the .05 to 10 Mev energy range is described. The spectrometer consists of four 60 cc Ge(Li) detectors with an energy resolution of 2.5 Kev (FWHM) at 1.33 Mev. The Ge(Li) detectors are actively shi...

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Veröffentlicht in:IEEE transactions on nuclear science 1974-02, Vol.21 (1), p.169-177
Hauptverfasser: Hicks, Donovan Blake, Jacobson, Allan S.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Collimators
Cooling
Detectors
Energy measurement
Energy resolution
Extraterrestrial measurements
Instruments
Solids
Spectroscopy
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Beschreibung
Zusammenfassung:A space-borne instrument to measure the spectral and temporal characteristics of astronomical γ-rays in the .05 to 10 Mev energy range is described. The spectrometer consists of four 60 cc Ge(Li) detectors with an energy resolution of 2.5 Kev (FWHM) at 1.33 Mev. The Ge(Li) detectors are actively shielded with CsI(Na) for angular collimation and background reduction. Cooling of the Ge(Li) detectors to 88°K for orbital lifetimes of up to two years is provided by a two-stage solid subliming refrigerator.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.1974.4327458