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Measurement of absolute γ-ray emission probabilities in the decay of 227Ac in equilibrium with its progeny
The emission probabilities of γ rays produced in the 227Ac decay series were determined by high-resolution γ-ray spectrometry of sources with standardised activity. The sources were prepared quantitatively on glass discs by drop deposition of a solution with 227Ac in radioactive equilibrium with its...
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Published in: | Applied radiation and isotopes 2019-02, Vol.144, p.34-46 |
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creator | Marouli, M. Lutter, G. Pommé, S. Van Ammel, R. Hult, M. Pierre, S. Dryák, P. Carconi, P. Fazio, A. Bruchertseifer, F. Morgenstern, A. |
description | The emission probabilities of γ rays produced in the 227Ac decay series were determined by high-resolution γ-ray spectrometry of sources with standardised activity. The sources were prepared quantitatively on glass discs by drop deposition of a solution with 227Ac in radioactive equilibrium with its daughter nuclides. Their activity was measured by a primary standardisation technique based on alpha-particle counting at a defined low solid angle. Four laboratories performed γ-ray spectrometry and derived absolute γ-ray intensities. Mean values were calculated and compared with literature data and the currently recommended evaluated data. New values on certain γ-ray emission probabilities are proposed.
•Measured gamma-ray emission probabilities in 227Ac decay series.•Mean values taken from 4 laboratories.•Source activity determined by primary standardisation.•Results reported for 87 γ-ray lines.•Generally in good agreement with literature values. |
doi_str_mv | 10.1016/j.apradiso.2018.08.023 |
format | article |
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•Measured gamma-ray emission probabilities in 227Ac decay series.•Mean values taken from 4 laboratories.•Source activity determined by primary standardisation.•Results reported for 87 γ-ray lines.•Generally in good agreement with literature values.</description><subject>223Ra</subject><subject>227Ac</subject><subject>227Th</subject><subject>Decay data</subject><subject>γ-ray intensities</subject><subject>γ-ray spectrometry</subject><issn>0969-8043</issn><issn>1872-9800</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KxDAUhYMoOI6-gmTppjVJm7bZOQz-wYgbXYckvXEy9mcmaZV5Lt_DZzJldC1cuHA537mcg9AlJSkltLjepGrrVe1CnzJCq5TEYdkRmtGqZImoCDlGMyIKkVQkz07RWQgbQkheCTZD70-gwuihhW7AvcVKh74ZB8DfX4lXewytC8H1Hd76XivtGjc4CNh1eFgDrsFETcQYKxdmusJujBrt3djiTzessRvCxL5Btz9HJ1Y1AS5-9xy93t2-LB-S1fP943KxSgzLqiypixyE0MKKohCl5cB1zokCBYYrrYXJK654SW1FGaVgays0s7kmRW15yUQ2R1cH3_h3N0IYZAxhoGlUB_0YJKOc07wQZJIWB6nxfQgerNx61yq_l5TIqV25kX_tyqldSeKwLII3BxBikA8HXgbjoDNQOw9mkHXv_rP4AekdiQQ</recordid><startdate>201902</startdate><enddate>201902</enddate><creator>Marouli, M.</creator><creator>Lutter, G.</creator><creator>Pommé, S.</creator><creator>Van Ammel, R.</creator><creator>Hult, M.</creator><creator>Pierre, S.</creator><creator>Dryák, P.</creator><creator>Carconi, P.</creator><creator>Fazio, A.</creator><creator>Bruchertseifer, F.</creator><creator>Morgenstern, A.</creator><general>Elsevier Ltd</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0961-1313</orcidid><orcidid>https://orcid.org/0000-0001-5017-7451</orcidid></search><sort><creationdate>201902</creationdate><title>Measurement of absolute γ-ray emission probabilities in the decay of 227Ac in equilibrium with its progeny</title><author>Marouli, M. ; Lutter, G. ; Pommé, S. ; Van Ammel, R. ; Hult, M. ; Pierre, S. ; Dryák, P. ; Carconi, P. ; Fazio, A. ; Bruchertseifer, F. ; Morgenstern, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2383-d64e99b9f96697f5e5b450aeaec5abb9c485a571f81211efdf9b2f4b06df57293</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>223Ra</topic><topic>227Ac</topic><topic>227Th</topic><topic>Decay data</topic><topic>γ-ray intensities</topic><topic>γ-ray spectrometry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Marouli, M.</creatorcontrib><creatorcontrib>Lutter, G.</creatorcontrib><creatorcontrib>Pommé, S.</creatorcontrib><creatorcontrib>Van Ammel, R.</creatorcontrib><creatorcontrib>Hult, M.</creatorcontrib><creatorcontrib>Pierre, S.</creatorcontrib><creatorcontrib>Dryák, P.</creatorcontrib><creatorcontrib>Carconi, P.</creatorcontrib><creatorcontrib>Fazio, A.</creatorcontrib><creatorcontrib>Bruchertseifer, F.</creatorcontrib><creatorcontrib>Morgenstern, A.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Applied radiation and isotopes</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Marouli, M.</au><au>Lutter, G.</au><au>Pommé, S.</au><au>Van Ammel, R.</au><au>Hult, M.</au><au>Pierre, S.</au><au>Dryák, P.</au><au>Carconi, P.</au><au>Fazio, A.</au><au>Bruchertseifer, F.</au><au>Morgenstern, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurement of absolute γ-ray emission probabilities in the decay of 227Ac in equilibrium with its progeny</atitle><jtitle>Applied radiation and isotopes</jtitle><date>2019-02</date><risdate>2019</risdate><volume>144</volume><spage>34</spage><epage>46</epage><pages>34-46</pages><issn>0969-8043</issn><eissn>1872-9800</eissn><abstract>The emission probabilities of γ rays produced in the 227Ac decay series were determined by high-resolution γ-ray spectrometry of sources with standardised activity. The sources were prepared quantitatively on glass discs by drop deposition of a solution with 227Ac in radioactive equilibrium with its daughter nuclides. Their activity was measured by a primary standardisation technique based on alpha-particle counting at a defined low solid angle. Four laboratories performed γ-ray spectrometry and derived absolute γ-ray intensities. Mean values were calculated and compared with literature data and the currently recommended evaluated data. New values on certain γ-ray emission probabilities are proposed.
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subjects | 223Ra 227Ac 227Th Decay data γ-ray intensities γ-ray spectrometry |
title | Measurement of absolute γ-ray emission probabilities in the decay of 227Ac in equilibrium with its progeny |
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