Intercomparison of Luminescence Measurements of Bricks from Dolon' Village : Experimental Methodology and Results of European Study Group

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概要

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• Thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques were applied to quartz grains extracted from various depths in bricks taken from buildings in the village of Dolon', Kazakhstan, to determine the cumulative absorbed dose, D_T. The measurements were performed in four laboratories (EU supported Measurement Group). The results obtained using TL and OSL are compared and discussed with reference to known sources of experimental uncertainty and relevant luminescence characteristics that may affect the evaluation of the absorbed dose. The external nature of the irradiation due to gamma rays from artificial radionuclides is verified by the measurement of depth-dose profiles, and these are compared with those obtained in previous studies for bricks from the same region. To produce these profiles, the cumulative dose due to natural background radiation, D_<BG>, was assessed, particularly based on the concentrations of radionuclides of lithogenic origin within the bricks and the surrounding environment. The consistency of these estimates of D_<BG> was assessed using depth-dose data and absorbed dose determinations for bricks collected from shielded locations. The values of cumulative absorbed dose since the onset of fallout, D_X, were calculated as the difference between the values of total cumulative dose in bricks since its manufacture, D_T, and values of D_<BG>. Furthermore, estimations of the cumulative absorbed doses in air in the reference location near the sampled buildings, _<RL>D_X, were obtained using corresponding conversion factors, C_<RL>, estimated on the basis of previous work. In addition to results for samples distributed for the International Intercomparison, reference is made to relevant results from samples that were collected in 1999 from Dolon' village and studied as part of EU-supported research.

• 日本放射線影響学会の論文

著者

• STEPANENKO Valeriy

  Medical Radiological Research Center, Russian Academy of Medical Sciences

• BAILIFF Ian

  Luminescence Laboratory, Environmental Research Centre, University of Durham

• Stepanenko Valeriy

  Medical Radiological Research Center Of Rams

• Jungner Hogne

  University Of Helsinki

• GOKSU H.

  GSF- National Research Center for Environment and Health

• Bailiff Ian

  Luminescence Laboratory Environmental Research Centre University Of Durham

• Bailiff Ian

  Luminescence Laboratory University Of Durham

関連論文

• Radiation Dose Measurement by Electron Spin Resonance Studies of Tooth Enamel in Lime and Non-lime Consuming Individuals from the Silchar Region of Northeast India
• International Intercomparison of Retrospective Luminescence Dosimetry Method : Sampling and Distribution of the Brick Samples from Dolon' Village, Kazakhstan
• Around Semipalatinsk Nuclear Test Site : Progress of dose Estimations Relevant to the Consequences of Nuclear Tests : A summary of 3^ Dosimetry Workshop on the Semipalatinsk Nuclear Test Site Area, RIRBM, Hiroshima University, Hiroshima, 9-11 of March
• A gradient of radioactive contamination in Dolon village near the SNTS and comparison of computed dose values with instrumental estimates for the 29 August, 1949 nuclear test
• Results of EPR Dosimetry for Population in the Vicinity of the Most Contaminating Radioactive Fallout Trace After the First Nuclear Test in the Semipalatinsk Test Site
• Tooth Enamel EPR Dosimetry : Optimization of EPR Spectra Recording Parameters and Effect of Sample Mass on Spectral Sensitivity
• Considerations Regarding the Implementation of EPR Dosimetry for the Population in the Vicinity of Semipalatinsk Nuclear Test Site Based on Experience from Other Radiation Accidents
• Intercomparison of Luminescence Measurements of Bricks from Dolon' Village : Experimental Methodology and Results of European Study Group

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