DocumentCode
898397
Title
Operating Characteristics of Small Position-Sensitive Mercuric Iodide Detectors
Author
Ortendahl, D. ; Kaufman, L. ; Hosier, K. ; Padgett, L. ; Ortale, C.
Author_Institution
University of California, San Francisco Radiologic Imaging Laboratory 400 Grandview Drive South San Francisco, California 94080
Volume
29
Issue
1
fYear
1982
Firstpage
784
Lastpage
788
Abstract
Room temperature semiconductors are potentially attractive candidates for gamma cameras because of their compactness and high spatial resolution. We have evaluated position-sensitive HgI2 detectors for use in high resolution small area gamma cameras. Two 0.5 mm thick detectors resolved by orthogonal strips into elements 1.75 mm on a side and 0.9 mm on a side have been tested. The spatial resolution is 2 mm FWO.1M and 1 mm FWO.1M respectively. Energy resolution is improved by measuring energy from the anode in coincidence with the cathode signal of the detector. An energy resolution of 6.8 keV FWHM at 122 keV and 5.7 keV FWHM at 60 keV has been observed.
Keywords
Cameras; Energy resolution; Gamma ray detection; Gamma ray detectors; Position sensitive particle detectors; Signal resolution; Spatial resolution; Strips; Temperature; Testing;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1982.4335959
Filename
4335959
Link To Document