Development of mercuric iodide energy dispersive X-ray array detectors

Author

Iwanczyk, J.S. ; Warburton, W.K. ; Dabrowski, A.J. ; Hedman, B. ; Hodgson, K.O. ; Patt, B.E.

Author_Institution

Inst. of Phys., Univ of Southern California, Marina del Ray, CA, USA

Volume

35

Issue

1

fYear

1988

Firstpage

93

Lastpage

97

Abstract

The authors consider that various areas of synchrotron radiation research, particularly extended X-ray absorption fine structure (EXAFS) on dilute solutions and anomalous scattering, would greatly benefit from the availability of energy-dispersive detector arrays with high-energy resolution and good spatial resolution. Mercuric iodide (HgI/sub 2/) detector submodules developed to meet this need are described. These submodules can be grouped into larger arrays of 100-400 elements. A prototype five-element HgI/sub 2/ array detector has been constructed and tested. Each element is 7.3 mm*0.7 mm. An energy resolution of 335 eV (FWHM) for Mn-K/sub alpha / at 5.9 keV has been introduced into the charge preamplifiers in order to minimize electronic crosstalk between channels.<>

Keywords

X-ray detection and measurement; semiconductor counters; EXAFS; HgI/sub 2/; anomalous scattering; dilute solutions; energy dispersive X-ray array detectors; extended X-ray absorption fine structure; synchrotron radiation research; Dispersion; Electromagnetic wave absorption; Energy resolution; Radiation detectors; Sensor arrays; Spatial resolution; Synchrotron radiation; X-ray detection; X-ray detectors; X-ray scattering;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.12681

Filename

12681