Short-lived Alpha Sources of Energies 6.0 MeV and 7.69 MeV for Calibration Purposes

An approach for preparation of short-lived a sources of energy 6.0 MeV and 7.69 MeV is proposed. The sources are prepared by taking a sample of 222Rn progeny on an a spectrometric filter. The activities (or related parameters) of 218Po, 214Pb and 214Bi at the end of sampling are precisely determined...

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Bibliographic Details
Published in:Radiation protection dosimetry 2001-01, Vol.94 (3), p.281-285
Main Authors: Pressyanov, D., Poffin, A., Meesen, G., Van Deynse, A., Buysse, J.
Format: Article
Language:English
Subjects:
Applied radiobiology (equipment, dosimetry...)
Biological and medical sciences
Biological effects of radiation
Calibration
Elements, Radioactive - analysis
Fundamental and applied biological sciences. Psychology
Models, Theoretical
Nuclear Energy
Radiation Monitoring - methods
Radon - adverse effects
Radon - analysis
Sensitivity and Specificity
Spectrometry, Gamma
Tissues, organs and organisms biophysics
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Summary:An approach for preparation of short-lived a sources of energy 6.0 MeV and 7.69 MeV is proposed. The sources are prepared by taking a sample of 222Rn progeny on an a spectrometric filter. The activities (or related parameters) of 218Po, 214Pb and 214Bi at the end of sampling are precisely determined by a reference measurement with an a spectrometer. Further they are used as input values to calculate with a sufficient precision the number of emitted a particles of any energy and at any time interval of interest. Theoretical modelling and experimental results demonstrated that such sources could be prepared with a sufficient purity. There is a potential for the number of a particles emitted in a given time interval to be certified with an accuracy of 1-2%.
ISSN:0144-8420
1742-3406
DOI:10.1093/oxfordjournals.rpd.a006501