Half-life measurement of 126Sn isolated from Hanford nuclear defense waste
| Autor: | D. R. Hansen, G. L. Troyer, S. A. Catlow, R. A. Jones |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Nuclear fuel
Isotope Spectrometer Chemistry Health Toxicology and Mutagenesis Radiochemistry Public Health Environmental and Occupational Health Radioactive waste Mass spectrometry Pollution Spent nuclear fuel Analytical Chemistry Nuclear reprocessing Nuclear Energy and Engineering Radiology Nuclear Medicine and imaging Inductively coupled plasma Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 263:599-603 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | Long-term risk assessment of residual and disposed nuclear fuel reprocessing waste requires good knowledge of component isotopes with long half-lives. For example, the accuracy of the accepted 126Sn half-life of approximately 100,000 years is insufficient for desired risk assessments. From modeling and sampling, 126Sn is known to exist in Hanford nuclear waste. Excess portions of waste characterization samples were used to isolate 126Sn for measurement of its half-life. Isolation was performed with ion-exchange resins. The resulting 126Sn was gamma-assayed with a hyperpure germanium spectrometer for decay photon identification and activity values. An inductively coupled plasma/mass spectrometer was used to measure the atom quantity of the isolated 126Sn. The separation chemistry, observed gamma energies, and calculated half-life are presented. The half-life of 126Sn estimated in this work is (2.33±0.10) . 105 years. |
| Databáze: | OpenAIRE |
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