Radiochemical Determination of Neutron Capture Cross Sections of 241Am.
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- SHINOHARA Nobuo
- Japan Atomic Energy Research Institute
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- HATSUKAWA Yuichi
- Japan Atomic Energy Research Institute
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- HATA Kentaro
- Japan Atomic Energy Research Institute
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- KOHNO Nobuaki
- Japan Atomic Energy Research Institute
Bibliographic Information
- Other Title
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- Radiochemical Determination of Neutron
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Abstract
The thermal neutron capture cross sections and the neutron capture resonance integrals of 241Am leading to the production of the isomer 242mAm and the ground-state 242gAm were measured radiochemically by the Cd-ratio technique with neutron flux monitors of Co/Al and Au/Al alloy. Highly-purified 241Am targets were irradiated in an aluminum capsule by using JMTR. The neutron fluxes and their epithermal neutron fractions were determined by measuring γ-rays of 60Co and 198Au. The yields of 242mAm and 242gAm were decided by analyzing growth and decay curves of the α-ray activity ratios 242Cm/241Am. The resultant thermal neutron capture cross sections are 85.7±6.3b and 768±58b for 242mAm and 242gAm, and the resonance integrals 114±7b and 1, 694±146b, respectively. The differences between the present results and the evaluated values by Mughabghab are 38-59%. The isomeric ratios, g/(m+g), of 0.90±0.09 for thermal neutrons and 0.94±0.11 for epithermal neutrons are, however, almost consistent with evaluated values.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 34 (7), 613-621, 1997
Atomic Energy Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204096230144
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- NII Article ID
- 10002077444
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- NII Book ID
- AA00703720
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- COI
- 1:CAS:528:DyaK2sXls1Gqt7o%3D
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- ISSN
- 18811248
- 00223131
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- NDL BIB ID
- 4260269
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed