DocumentCode
788434
Title
An Anticoincidence-Shielded Ge(Li) Gamma-Ray Spectrometer for High Sensitivity Counting
Author
Cooper, J.A. ; Wogman, N.A. ; Perkins, R.W.
Author_Institution
Environmental and Radiological Sciences Department Battelle Memorial Institute, Pacific Northwest Laboratory Richland, Washington
Volume
15
Issue
3
fYear
1968
fDate
6/1/1968 12:00:00 AM
Firstpage
407
Lastpage
412
Abstract
An anticoincidence-shielded Ge(Li) gamma-ray spectrometer for high sensitivity counting is described. The system consists of a 20 cc coaxial diode centered inside a 26" diameter by 24" thick plastic phosphor. The source is placed inside the shield and both the coincidence and anticoincidence spectra are recorded simultaneously. The anticoincidence shield reduces the 137Cs Compton edge by a factor of 7.5 to provide a peak to Compton edge ratio of 150:1 without reducing the photopeak efficiency by more than 3%. This system also provides a two to fourfold lower natural radionuclide background than similar sized diodes.
Keywords
Coaxial components; Detectors; Diodes; Interference; Laboratories; Neutrons; Phosphors; Plastics; Radioactive materials; Spectroscopy;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1968.4324965
Filename
4324965
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