Epithermal neutron activation analysis using a boron carbide irradiation filter
| Autor: | William D. Ehmann, J. Brückner, D. M. McKown |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Materials science
Health Toxicology and Mutagenesis Radiochemistry Public Health Environmental and Occupational Health chemistry.chemical_element Boron carbide Isotopes of boron Pollution Neutron temperature Analytical Chemistry Carbide chemistry.chemical_compound Nuclear Energy and Engineering chemistry Radiology Nuclear Medicine and imaging Neutron Neutron activation analysis Energy source Boron Spectroscopy |
| Zdroj: | Journal of Radioanalytical Chemistry. 57:491-502 |
| ISSN: | 1588-2780 0134-0719 |
| DOI: | 10.1007/bf02516759 |
| Popis: | The use of boron carbide as a thermal neutron filter in epithermal neutron activation (ENAA) analysis has been investigated. As compared to the use of a cadmium filter, boron provides a greater reduction of activities from elements relatively abundant in terrestrial rocks and fossil fuels, such as Na, La, Sc and Fe. These elements have excitation functions which follow the 1/v law in the 1 to 10 eV lower epithermal region. This enhances the sensitivity of ENAA for elements such as U, Th, Ba and etc. which have strong resonances in the higher epithermal region above 10 eV. In addition, a boron carbide filter has the advantages over cadmium of acquiring a relatively low level of induced activity which poses minimal radiation safety problems, when used for ENAA. |
| Databáze: | OpenAIRE |
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