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232Th, 233Pa, and 234U capture cross-section measurements in moderated neutron flux

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Title: 232Th, 233Pa, and 234U capture cross-section measurements in moderated neutron flux
Authors: Bringer, O.1, Isnard, H.2, AlMahamid, I.3, Chartier, F.2, Letourneau, A.1 aletourneau@cea.fr
Source: Nuclear Instruments & Methods in Physics Research Section A. Jul2008, Vol. 591 Issue 3, p510-516. 7p.
Subjects: Neutrons, Fused salts, Mass spectrometry, Irradiation
Abstract: Abstract: The Th–U cycle was studied through the evolution of a 100μg 232Th sample irradiated in a moderated neutron flux of 8.01014 n/cm2/s, intensity close to that of a thermal molten salt reactor. After 43 days of irradiation and 6 months of cooling, a precise mass spectrometric analysis, using both TIMS and MC-ICP-MS techniques, was performed, according to a rigorous methodology. The measured thorium and uranium isotopic ratios in the final irradiated sample were then compared with integral simulations based on evaluated data; an overall good agreement was seen. Four important thermal neutron-capture cross-sections were also extracted from the measurements, 232Th (7.34±0.21b), 233Pa (38.34±1.78b), 234U (106.12±3.34b), and 235U (98.15±11.24b). Our 232Th and 235U results confirmed existing values whereas the cross-sections of 233Pa and 234U (both key parameters) have been redefined. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: <superscript>232</superscript>Th, <superscript>233</superscript>Pa, and <superscript>234</superscript>U capture cross-section measurements in moderated neutron flux
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  Data: <searchLink fieldCode="DE" term="%22Neutrons%22">Neutrons</searchLink><br /><searchLink fieldCode="DE" term="%22Fused+salts%22">Fused salts</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+spectrometry%22">Mass spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Irradiation%22">Irradiation</searchLink>
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  Data: Abstract: The Th–U cycle was studied through the evolution of a 100μg 232Th sample irradiated in a moderated neutron flux of 8.01014 n/cm2/s, intensity close to that of a thermal molten salt reactor. After 43 days of irradiation and 6 months of cooling, a precise mass spectrometric analysis, using both TIMS and MC-ICP-MS techniques, was performed, according to a rigorous methodology. The measured thorium and uranium isotopic ratios in the final irradiated sample were then compared with integral simulations based on evaluated data; an overall good agreement was seen. Four important thermal neutron-capture cross-sections were also extracted from the measurements, 232Th (7.34±0.21b), 233Pa (38.34±1.78b), 234U (106.12±3.34b), and 235U (98.15±11.24b). Our 232Th and 235U results confirmed existing values whereas the cross-sections of 233Pa and 234U (both key parameters) have been redefined. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.nima.2008.01.067
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      – Code: eng
        Text: English
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        PageCount: 7
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    Subjects:
      – SubjectFull: Neutrons
        Type: general
      – SubjectFull: Fused salts
        Type: general
      – SubjectFull: Mass spectrometry
        Type: general
      – SubjectFull: Irradiation
        Type: general
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      – TitleFull: 232Th, 233Pa, and 234U capture cross-section measurements in moderated neutron flux
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              M: 07
              Text: Jul2008
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              Y: 2008
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