Retrospective Estimation of the Concentration of 241-Pu in Air Sampled at a Belgrade Site Following the Chernobyl Accident

The concentration of 241-Pu in air sampled at a Belgrade site following the Chernobyl accident was estimated. Using a standard alpha spectrometric 239,240-Pu source the energy and efficiency calibration of the spectrometer was performed. The results were obtained by re-measurement of plutonium alpha...

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Veröffentlicht in:Applied radiation and isotopes 2006-06, Vol.64 (6), p.689-689
Hauptverfasser: Vukanac, I, Paligoric, D, Novkovic, D, Djurasevic, M, Obradovic, Z, Milosevic, Z, Manic, S
Format: Artikel
Sprache:eng
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Zusammenfassung:The concentration of 241-Pu in air sampled at a Belgrade site following the Chernobyl accident was estimated. Using a standard alpha spectrometric 239,240-Pu source the energy and efficiency calibration of the spectrometer was performed. The results were obtained by re-measurement of plutonium alpha-spectrometric source, with 236-Pu as a tracer, used almost 13 years earlier for the determination of 239,240-Pu concentration of surface air immediately after the Chernobyl accident. The estimated 241-Pu concentration, based on the 241-Am in-growth method for air samples, ranged from 240 to 7800 mu Bq/m super(3). The average activity ratio 241-Pu/239, 240-Pu originating from the Chernobyl accident at Belgrade site was approximately 100 at the collection time.
ISSN:0969-8043