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http://www.repositorio.cdtn.br:8080/jspui/handle/123456789/436| Title: | Optimised k0-instrumental neutron activation method using Triga Mark I IPR-R1 reactor at CDTN/CNEN, Belo Horizonte, Brazil |
| Title of periodic: | Nuclear Instruments and Methods in Physics Research A Amsterdam |
| metadata.dc.title.subtitlejournal: | Accellerators, Spectrometers, Detectors and Associated Equipment |
| Authors: | Menezes, Maria Ângela de Barros Correia Jacimovic, R. |
| Affiliation: | Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil Jozef Stefan Institute, Ljubljana, Slovenia |
| Issue Date: | 2006 |
| Keywords: | Neutron activation analysis;reference materials;radiation detectors;calibration |
| Abstract: | The Nuclear Technology Development Centre/Brazilian Commission for Nuclear Energy, CDTN/CNEN, is the only Brazilian Institution to apply the k0-standardisation method of instrumental neutron activation technique determining elements using its own nuclear reactor, TRIGA MARK I IPR-R1. After changes in the reactor core configuration, the reactor neutron flux distribution in typical irradiation channels had to be updated, as well as the parameters f and a, needed to apply the k0-method of neutron activation analysis. The neutron flux distribution in the rotary rack was evaluated through the specific count rate of 198Au and the parameters f and a, were determined in five selected channels applying the ''Cd-ratio for multi-monitor'' method, using a set of Al-(0.1 percent) Au and Zr (99.8 percent) monitors. Several reference materials were analysed, indicating the effectiveness of the improved method |
| Access: | L |
| Appears in Collections: | Artigo de periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Art-08_Maria_Angela_BCMenezes.pdf | 325.62 kB | Adobe PDF | View/Open |
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