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Performance and durability of HgI2 X-ray detectors for space missions

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6 Author(s)
Iwanczyk, J.S. ; Inst. of Phys., Univ. of Southern California, Marina del Ray, CA, USA ; Wang, Y.J. ; Bradley, J.G. ; Conley, J.M.
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Considerable progress has been achieved in HgI2 detector fabrication technology and amplification electronics. An energy resolution of 198 eV (full width at half maximum) has been obtained for the Mn Kα 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 HgI2 detectors have been used to demonstrate proton-radiation-damage resistance to levels of 1012 protons/cm2 at 10.7 MeV. It is concluded that HgI2 detectors are suitable for the ordinary requirements of energy dispersive detectors in X-ray spectroscopy systems

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Nuclear Science, IEEE Transactions on  (Volume:36 ,  Issue: 1 )