Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography
The performance of the 1 MV AMS system at the CNA (Centro Nacional de Aceleradores, Seville, Spain) for 236U and 239,240Pu measurements has been extensively investigated. A very promising 236U/238U abundance sensitivity of about 3 × 10−11 has been recently achieved, and background figures for 239Pu...
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ftunivsevillair:oai:idus.us.es:11441/148037 2023-07-30T04:02:03+02:00 Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography Chamizo Calvo, Elena López Lora, Mercedes Villa Alfageme, María Casacuberta, N. López Gutiérrez, José María Pham, Mai Khanh Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Física Aplicada II Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía 2023-07-18T10:00:32Z https://idus.us.es/handle//11441/148037 eng eng ScienceDirect Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, 535-540. FIS2012- 31853 P-10-FQM-5956 https://www.sciencedirect.com/science/article/pii/S0168583X15001913 https://idus.us.es/handle//11441/148037 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Plutonium isotopes U236 Seawater Sediments Oceanography info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftunivsevillair 2023-07-18T23:26:29Z The performance of the 1 MV AMS system at the CNA (Centro Nacional de Aceleradores, Seville, Spain) for 236U and 239,240Pu measurements has been extensively investigated. A very promising 236U/238U abundance sensitivity of about 3 × 10−11 has been recently achieved, and background figures for 239Pu of about 106 atoms were reported in the past. These promising results lead to the use of conventional low energy AMS systems for the analysis of 236U and 239Pu and its further application in environmental studies. First 236U results obtained on our AMS system for marine samples (sediments and water) are presented here. Results of two new IAEA reference materials (IAEA-410 and IAEA-412, marine sediments from Pacific Ocean) are reported. The obtained 236U/239Pu atom ratios, of 0.12 and 0.022, respectively, show a dependency with the contamination source (i.e. local fallout from the US tests performed at the Bikini Atoll and general fallout). The results obtained for a third IAEA reference material (IAEA-381, seawater from the Irish Sea), are also presented. In the following, the uranium and plutonium isotopic compositions obtained on a set of 5 intercomparison seawater samples from the Arctic Ocean provided by the ETH Zürich are discussed. By comparing them with the obtained results on the 600 kV AMS facility Tandy at the ETH Zürich, we demonstrate the solidity of the CNA technique for 236U/238U determinations at, at least, 7 × 10−10 level. Finally, these results are discussed in their environmental context. Ministerio de Economía y Competitividad FIS2012- 31853 Junta de Andalucía P-10-FQM-5956 Article in Journal/Newspaper Arctic Arctic Ocean idUS - Deposito de Investigación Universidad de Sevilla Arctic Arctic Ocean Pacific |
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Open Polar |
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idUS - Deposito de Investigación Universidad de Sevilla |
op_collection_id |
ftunivsevillair |
language |
English |
topic |
Plutonium isotopes U236 Seawater Sediments Oceanography |
spellingShingle |
Plutonium isotopes U236 Seawater Sediments Oceanography Chamizo Calvo, Elena López Lora, Mercedes Villa Alfageme, María Casacuberta, N. López Gutiérrez, José María Pham, Mai Khanh Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography |
topic_facet |
Plutonium isotopes U236 Seawater Sediments Oceanography |
description |
The performance of the 1 MV AMS system at the CNA (Centro Nacional de Aceleradores, Seville, Spain) for 236U and 239,240Pu measurements has been extensively investigated. A very promising 236U/238U abundance sensitivity of about 3 × 10−11 has been recently achieved, and background figures for 239Pu of about 106 atoms were reported in the past. These promising results lead to the use of conventional low energy AMS systems for the analysis of 236U and 239Pu and its further application in environmental studies. First 236U results obtained on our AMS system for marine samples (sediments and water) are presented here. Results of two new IAEA reference materials (IAEA-410 and IAEA-412, marine sediments from Pacific Ocean) are reported. The obtained 236U/239Pu atom ratios, of 0.12 and 0.022, respectively, show a dependency with the contamination source (i.e. local fallout from the US tests performed at the Bikini Atoll and general fallout). The results obtained for a third IAEA reference material (IAEA-381, seawater from the Irish Sea), are also presented. In the following, the uranium and plutonium isotopic compositions obtained on a set of 5 intercomparison seawater samples from the Arctic Ocean provided by the ETH Zürich are discussed. By comparing them with the obtained results on the 600 kV AMS facility Tandy at the ETH Zürich, we demonstrate the solidity of the CNA technique for 236U/238U determinations at, at least, 7 × 10−10 level. Finally, these results are discussed in their environmental context. Ministerio de Economía y Competitividad FIS2012- 31853 Junta de Andalucía P-10-FQM-5956 |
author2 |
Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Física Aplicada II Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
format |
Article in Journal/Newspaper |
author |
Chamizo Calvo, Elena López Lora, Mercedes Villa Alfageme, María Casacuberta, N. López Gutiérrez, José María Pham, Mai Khanh |
author_facet |
Chamizo Calvo, Elena López Lora, Mercedes Villa Alfageme, María Casacuberta, N. López Gutiérrez, José María Pham, Mai Khanh |
author_sort |
Chamizo Calvo, Elena |
title |
Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography |
title_short |
Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography |
title_full |
Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography |
title_fullStr |
Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography |
title_full_unstemmed |
Analysis of 236U and plutonium isotopes, 239,240Pu, on the 1 MV AMS system at the Centro Nacional de Aceleradores, as a potential tool in oceanography |
title_sort |
analysis of 236u and plutonium isotopes, 239,240pu, on the 1 mv ams system at the centro nacional de aceleradores, as a potential tool in oceanography |
publisher |
ScienceDirect |
publishDate |
2023 |
url |
https://idus.us.es/handle//11441/148037 |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, 535-540. FIS2012- 31853 P-10-FQM-5956 https://www.sciencedirect.com/science/article/pii/S0168583X15001913 https://idus.us.es/handle//11441/148037 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
_version_ |
1772812782371078144 |