| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-05-12 |
| タイトル |
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|
タイトル |
Revised Neutron Capture Cross Section of 204Pb by Accuracy Improvement of Thermal Ionization Mass Spectrometry |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Nakamura Shoji
Shibahara Yuji
Shizuma Toshiyuki
Kimura Atsushi
Endo Shunsuke
Rovira Gerad
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
In view of the requirement for accurate cross-section data of the stable Pb isotopes in order to discuss the neutron moderation effect and neutron economy in the design of accelerator-driven systems, the authors previously derived the thermal-neutron capture cross-section of Pb-204 by using thermal ionization mass spectrometry to be 0.537±0.030 barn. The uncertainty in the Pb-205/Pb-204 isotope ratio determined by mass spectrometry was 4.3%, bringing the total uncertainty to 5.6%. This study demonstrated that using a new silica-gel emitter used in mass spectrometry improved isotope ratio precision to 1%. This enabled the reaction rate to be determined with 1% accuracy, which exceeds the accuracy of conventional activation analysis. Owing to improved accuracy in mass spectrometry, the uncertainty has been reduced and the value of isotope ratio has changed slightly. Accordingly, the authors report a revised Pb-204 cross-section of 0.512±0.019 barn. |
| 書誌情報 |
Journal of Nuclear Science and Technology
発行日 2026-05
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| ISSN |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0022-3131 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.108 |
