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
Link To Document :
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