Performance and durability of HgI/sub 2/ X-ray detectors for space missions

Performance and durability of HgI/sub 2/ X-ray detectors for space missions

Considerable progress has been achieved in HgI/sub 2/ detector fabrication technology and amplification electronics. An energy resolution of 198 eV (full width at half maximum) has been obtained for the Mn K/sub alpha / line of 5.9 keV in a practical X-ray probe without the use of cryogenic cooling....

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Veröffentlicht in:IEEE transactions on nuclear science 1989-02, Vol.36 (1), p.841-845
Hauptverfasser: Iwanczyk, J.S., Wang, Y.J., Bradley, J.G., Conley, J.M., Albee, A.L., Economou, T.E.
Format: Artikel
Sprache:eng
Schlagworte:
Cryogenics
Electronics cooling
Encapsulation
Energy resolution
Fabrication
Probes
Temperature
Testing
X-ray detection
X-ray detectors
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Zusammenfassung:Considerable progress has been achieved in HgI/sub 2/ detector fabrication technology and amplification electronics. An energy resolution of 198 eV (full width at half maximum) has been obtained for the Mn K/sub alpha / line of 5.9 keV in a practical X-ray probe without the use of cryogenic cooling. Detectors prepared with Parylene-C encapsulation have demonstrated perfect reliability in two-year tests under high vacuum and temperature and bias cycling. Other HgI/sub 2/ detectors have been used to demonstrate proton-radiation-damage resistance to levels of 10/sup 12/ protons/cm/sup 2/ at 10.7 MeV. It is concluded that HgI/sub 2/ detectors are suitable for the ordinary requirements of energy dispersive detectors in X-ray spectroscopy systems.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.34562