20 element HgI2 energy dispersive X-ray array detector system

The authors describe recent progress in the development of HgI/sub 2/ energy dispersive X-ray detector arrays and associated miniaturized processing electronics for synchrotron-radiation research applications. Experimental results with a 20-element array detector were obtained under realistic synchrotron beam conditions at Stanford Synchrotron Radiation Lab (SSRL). An energy resolution of 250 eV full width at half maximum (FWHM) at 5.9 keV (Mn-K/sub alpha /) was achieved. Energy resolution and throughput measurements versus input count rate and the energy of the incoming radiation have been obtained. Extended X-ray absorption fine structure (EXAFS) spectra were taken from diluted samples simulating proteins with nickel.<
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