Standardization of 241Am solution

The standardization of 241Am solution has been undertaken using a 4 π β – γ coincidence system. The 4 π proportional counter used for alpha detection has a 0.1 mm thick Al window in the outside wall in order to minimize γ -ray attenuation. The extrapolation technique was applied to determine the act...

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Bibliographic Details
Published in:Applied radiation and isotopes 2006-10, Vol.64 (10), p.1238-1241
Main Authors: Koskinas, Marina F., Silva, Eliezer A., Yamazaki, Ione M., Dias, Mauro S.
Format: Article
Language:English
Subjects:
241Am
Activity
Algorithms
Americium - analysis
Americium - standards
Brazil
Coincidence system
Disintegration rate
Guidelines as Topic
Radiation Dosage
Radiometry - methods
Radiometry - standards
Reference Standards
Reference Values
Reproducibility of Results
Sensitivity and Specificity
Solutions
Spectrometry, Gamma - methods
Spectrometry, Gamma - standards
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Summary:The standardization of 241Am solution has been undertaken using a 4 π β – γ coincidence system. The 4 π proportional counter used for alpha detection has a 0.1 mm thick Al window in the outside wall in order to minimize γ -ray attenuation. The extrapolation technique was applied to determine the activity of the solution. The variation of alpha efficiency has been made using external absorbers and by the electronic discrimination. The results from the two methods were compared and are in agreement within the experimental uncertainty.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2006.02.028