Minimum detectable activity in in situ γ-ray spectrometry
The algorithm used to calculate a minimum detectable activity ( A D ) of an environmental volume sample measured by γ-ray spectrometry was modified and adapted for in situ measurements performed at the standard 1 m height above ground. A D values of target radionuclides were determined from the in s...
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| Published in | Applied radiation and isotopes Vol. 55; no. 2; pp. 197 - 203 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
England
Elsevier Ltd
01.08.2001
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| Subjects | |
| Online Access | Get full text |
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| Summary: | The algorithm used to calculate a minimum detectable activity (
A
D
) of an environmental volume sample measured by γ-ray spectrometry was modified and adapted for in situ measurements performed at the standard 1
m height above ground.
A
D
values of target radionuclides were determined from the in situ spectra collected at two disparate sites. A linear relationship between the two sets of
A
D
s was found and the ratio between these two sets is equal to the square root of the ratio of the two respective absorbed dose rates measured at the sites at 1
m height. Absorbed dose rates were calculated using the concentration of potassium, thorium and uranium in the soils at the sites and found to agree well with the measured values.
A
D
values can be predicted easily in in situ γ spectrometry applying a simple experimental procedure that is based on the linear relationship. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0969-8043 1872-9800 |
| DOI: | 10.1016/S0969-8043(00)00377-8 |