Title :
20 element HgI2 energy dispersive X-ray array detector system
Author :
Iwanczyk, J.S. ; Dorri, N. ; Wang, M. ; Szczebiot, R.W. ; Dabrowski, A.J. ; Hedman, B. ; Hodgson, K.O. ; Patt, B.E.
Author_Institution :
Xsirius Inc., Marina del Rey, CA, USA
Abstract :
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.<>
Keywords :
EXAFS; nuclear electronics; organic compounds; semiconductor counters; 20-element array detector; 250 eV; EXAFS; HgI/sub 2/; Ni; energy dispersive X-ray detector arrays; energy resolution; full width at half maximum; miniaturized processing electronics; synchrotron-radiation research; Dispersion; Electromagnetic wave absorption; Energy measurement; Energy resolution; Proteins; Radiation detectors; Sensor arrays; Synchrotron radiation; Throughput; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.258910
