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Radioactivity Measurements on Glazed Ceramic Surfaces
A variety of commonly available household and industrial ceramic items and some specialty glass materials were assayed by alpha pulse counting and ion chamber voltage measurements for radioactivity concentrations. Identification of radionuclides in some of the items was performed by gamma spectrosco...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
2000
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4872684/ https://www.ncbi.nlm.nih.gov/pubmed/27551610 http://dx.doi.org/10.6028/jres.105.031 |
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author | Hobbs, Thomas G. |
author_facet | Hobbs, Thomas G. |
author_sort | Hobbs, Thomas G. |
collection | PubMed |
description | A variety of commonly available household and industrial ceramic items and some specialty glass materials were assayed by alpha pulse counting and ion chamber voltage measurements for radioactivity concentrations. Identification of radionuclides in some of the items was performed by gamma spectroscopy. The samples included tableware, construction tiles and decorative tiles, figurines, and other products with a clay based composition. The concentrations of radioactivity ranged from near background to about four orders of magnitude higher. Almost every nuclide identification test demonstrated some radioactivity content from one or more of the naturally occurring radionuclide series of thorium or uranium. The glazes seemed to contribute most of the activity, although a sample of unglazed pottery greenware showed some activity. Samples of glazing paints and samples of deliberately doped glass from the World War II era were included in the test, as was a section of foam filled poster board. A glass disc with known (232)Th radioactivity concentration was cast for use as a calibration source. The results from the two assay methods are compared, and a projection of sensitivity from larger electret ion chamber devices is presented. |
format | Online Article Text |
id | pubmed-4872684 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2000 |
publisher | [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology |
record_format | MEDLINE/PubMed |
spelling | pubmed-48726842016-08-22 Radioactivity Measurements on Glazed Ceramic Surfaces Hobbs, Thomas G. J Res Natl Inst Stand Technol Article A variety of commonly available household and industrial ceramic items and some specialty glass materials were assayed by alpha pulse counting and ion chamber voltage measurements for radioactivity concentrations. Identification of radionuclides in some of the items was performed by gamma spectroscopy. The samples included tableware, construction tiles and decorative tiles, figurines, and other products with a clay based composition. The concentrations of radioactivity ranged from near background to about four orders of magnitude higher. Almost every nuclide identification test demonstrated some radioactivity content from one or more of the naturally occurring radionuclide series of thorium or uranium. The glazes seemed to contribute most of the activity, although a sample of unglazed pottery greenware showed some activity. Samples of glazing paints and samples of deliberately doped glass from the World War II era were included in the test, as was a section of foam filled poster board. A glass disc with known (232)Th radioactivity concentration was cast for use as a calibration source. The results from the two assay methods are compared, and a projection of sensitivity from larger electret ion chamber devices is presented. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2000 2000-04-01 /pmc/articles/PMC4872684/ /pubmed/27551610 http://dx.doi.org/10.6028/jres.105.031 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright. |
spellingShingle | Article Hobbs, Thomas G. Radioactivity Measurements on Glazed Ceramic Surfaces |
title | Radioactivity Measurements on Glazed Ceramic Surfaces |
title_full | Radioactivity Measurements on Glazed Ceramic Surfaces |
title_fullStr | Radioactivity Measurements on Glazed Ceramic Surfaces |
title_full_unstemmed | Radioactivity Measurements on Glazed Ceramic Surfaces |
title_short | Radioactivity Measurements on Glazed Ceramic Surfaces |
title_sort | radioactivity measurements on glazed ceramic surfaces |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4872684/ https://www.ncbi.nlm.nih.gov/pubmed/27551610 http://dx.doi.org/10.6028/jres.105.031 |
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