The estimation of the 210Pb bremsstrahlung contribution to the background of lead shielded -spectrometers

The 46.5 keV -intensity of 210Pb in the background can be easily reduced by inner lining, but the bremsstrahlung from the 1.2 MeV maximal energy -decay will reach the lead shielded Ge detector. The spectrum of this bremsstrahlung is calculated by numerically fitting the -spectrum and integrating the...

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Bibliographic Details
Published in:AIP conference proceedings 2006-04, Vol.831 (1), p.514-516
Main Authors: Mrdja, Dusan, Bikit, Istvan, Veskovic, Miroslav, Slivka, Jaroslav, Conkic, Ljiljana, Varga, Ester
Format: Article
Language:English
Subjects:
ADSORPTION
ALGORITHMS
BETA DECAY
BETA SPECTRA
BREMSSTRAHLUNG
COMPARATIVE EVALUATIONS
GAMMA SPECTROMETERS
GE SEMICONDUCTOR DETECTORS
KEV RANGE
LEAD 210
MEV RANGE
NUCLEAR PHYSICS AND RADIATION PHYSICS
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Summary:The 46.5 keV -intensity of 210Pb in the background can be easily reduced by inner lining, but the bremsstrahlung from the 1.2 MeV maximal energy -decay will reach the lead shielded Ge detector. The spectrum of this bremsstrahlung is calculated by numerically fitting the -spectrum and integrating the Koch-Motz formula. The adsorption of the bremsstrahlung spectrum in the lead is calculated by the effective solid angle algorithm by comparison with the measured background spectrum. It is shown, that for the lead with 25 Bq/kg of 210Pb, at 100 keV the bremsstrahlung contribution to the background is about 20%.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2201000