| Autor: |
Nakamura, Shoji, Terada, Kazushi, Kimura, Atsushi, Nakao, Taro, Iwamoto, Osamu, Harada, Hideo, Uehara, Akihiro, Takamiya, Koichi, Fujii, Toshiyuki |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Journal of Nuclear Science and Technology. 56(1):123-129 |
| ISSN: |
0022-3131 |
| Popis: |
Accurate data of gamma-ray emission probabilities are frequently needed when one quantitatively determines the amount of isotope by gamma-ray measurements or obtains neutron capture cross-sections using them. Americium-243, one of the most important minor actinides, produces 244Am after neutron capture. The 744-keV gamma-ray decaying from the ground state of 244Am has a relatively large gamma-ray emission probability about 66%; however, its uncertainty is as large as 29%. The uncertainty of the gamma-ray emission probability leads to a major factor of the systematic uncertainty on determining an amount of isotope, and therefore the gamma-ray emission probability was measured by using an activation method and an examined level structure of 244Cm. In this study, the emission probability of 744-keV gamma-ray was derived as 66.5 ± 1.1%, and its uncertainty was improved from 29% to 2%. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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