Document Detail

Gaseous standards preparation with the radionuclide Ar-41 for stack monitors calibration and verification in nuclear facilities.
MedLine Citation:
PMID:  18378154     Owner:  NLM     Status:  PubMed-not-MEDLINE    
The Czech Metrology Institute performs calibration and verification of noble gases stack monitors in nuclear power plants and nuclear research facilities. Together with Kr-85 and Xe-133, the radionuclide Ar-41 is measured using HPGe detectors and its activity is determined using a gamma-ray peak at 1293keV. The counting efficiency used in these measurements was calculated by the Monte Carlo method using the MCNP code. Radioactive gas standard is prepared by irradiation of argon in a high-pressure vessel by a Cf-252 neutron generator. The inner shape and thickness of the cylinder walls were determined by radiography. The argon volume under normal conditions is determined from the high-pressure vessel volume and by a precise gas pressure measurement. As a result, the activity concentration of Ar-41 at normal conditions is certified.
Petr Kovar; Pavel Dryak
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Publication Detail:
Type:  Journal Article     Date:  2008-02-21
Journal Detail:
Title:  Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine     Volume:  66     ISSN:  0969-8043     ISO Abbreviation:  Appl Radiat Isot     Publication Date:    2008 Jun-Jul
Date Detail:
Created Date:  2008-05-05     Completed Date:  2008-08-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306253     Medline TA:  Appl Radiat Isot     Country:  England    
Other Details:
Languages:  eng     Pagination:  796-8     Citation Subset:  -    
Czech Metrology Institute, Inspectorate for Ionizing Radiation, Radiova 1, CZ-102 00 Prague 10, Czech Republic.
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