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New Measurements to Resolve Discrepancies in Evaluated Model Parameters of 181Ta.

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Title: New Measurements to Resolve Discrepancies in Evaluated Model Parameters of 181Ta.
Authors: Brown, Jesse M.1 (AUTHOR) brownjm@ornl.gov, Barry, Devin P.2 (AUTHOR), Block, Robert C.3 (AUTHOR), Youmans, Amanda3 (AUTHOR), Choun, Hyun3 (AUTHOR), Ney, Adam2 (AUTHOR), Blain, Ezekiel3 (AUTHOR), Rapp, Michael J.2 (AUTHOR), Danon, Yaron3 (AUTHOR)
Source: Nuclear Science & Engineering. Jun2024, Vol. 198 Issue 6, p1155-1165. 11p.
Subjects: Data libraries, Tantalum, Resonance, Neutrons
Abstract: To resolve discrepancies in evaluated cross sections among major nuclear data libraries, energy-differential neutron transmission and radiative capture yield of 181Ta were measured from 0.15 to 100 keV using multiple sample thicknesses. The new measurements provide resolution such that the resolved resonance region (RRR) can be evaluated up to at least 2.5 keV and the unresolved resonance region can be evaluated up to at least 100 keV. The transmission and capture yield measurements were modeled using resonance parameters from three major libraries to assess the predictive capability of each. It was found that JENDL-5.0 performed best in the RRR. Because of the poor performance of the U.S. ENDF/B evaluation, it is recommended that ENDF/B be reevaluated for 181Ta. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Science & Engineering is the property of Taylor & Francis Ltd 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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Header DbId: egs
DbLabel: Engineering Source
An: 176862203
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: New Measurements to Resolve Discrepancies in Evaluated Model Parameters of <superscript>181</superscript>Ta.
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  Data: <searchLink fieldCode="AR" term="%22Brown%2C+Jesse+M%2E%22">Brown, Jesse M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> brownjm@ornl.gov</i><br /><searchLink fieldCode="AR" term="%22Barry%2C+Devin+P%2E%22">Barry, Devin P.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Block%2C+Robert+C%2E%22">Block, Robert C.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Youmans%2C+Amanda%22">Youmans, Amanda</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choun%2C+Hyun%22">Choun, Hyun</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ney%2C+Adam%22">Ney, Adam</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Blain%2C+Ezekiel%22">Blain, Ezekiel</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rapp%2C+Michael+J%2E%22">Rapp, Michael J.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Danon%2C+Yaron%22">Danon, Yaron</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Science+%26+Engineering%22">Nuclear Science & Engineering</searchLink>. Jun2024, Vol. 198 Issue 6, p1155-1165. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Data+libraries%22">Data libraries</searchLink><br /><searchLink fieldCode="DE" term="%22Tantalum%22">Tantalum</searchLink><br /><searchLink fieldCode="DE" term="%22Resonance%22">Resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Neutrons%22">Neutrons</searchLink>
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  Label: Abstract
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  Data: To resolve discrepancies in evaluated cross sections among major nuclear data libraries, energy-differential neutron transmission and radiative capture yield of 181Ta were measured from 0.15 to 100 keV using multiple sample thicknesses. The new measurements provide resolution such that the resolved resonance region (RRR) can be evaluated up to at least 2.5 keV and the unresolved resonance region can be evaluated up to at least 100 keV. The transmission and capture yield measurements were modeled using resonance parameters from three major libraries to assess the predictive capability of each. It was found that JENDL-5.0 performed best in the RRR. Because of the poor performance of the U.S. ENDF/B evaluation, it is recommended that ENDF/B be reevaluated for 181Ta. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Nuclear Science & Engineering is the property of Taylor & Francis Ltd 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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        Value: 10.1080/00295639.2023.2249786
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        Text: English
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        Type: general
      – SubjectFull: Tantalum
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      – SubjectFull: Resonance
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      – SubjectFull: Neutrons
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              M: 06
              Text: Jun2024
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