| Texto completo | |
| Autor(es): |
Gonnelli, E.
;
Diniz, R.
;
dos Santos, A.
;
Jerez, R.
;
Pinto, L. N.
;
Landim, H. R.
;
IEEE
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | 2015 4TH INTERNATIONAL CONFERENCE ON ADVANCEMENTS IN NUCLEAR INSTRUMENTATION MEASUREMENT METHODS AND THEIR APPLICATIONS (ANIMMA); v. N/A, p. 4-pg., 2015-01-01. |
| Resumo | |
To overcome the shortage of He-3 detectors for subcritical experiments in the IPEN/MB-01 reactor, some experiments were performed using less sensitive detectors, such as BF3, and a logic input module, which sum the counts from different detectors. Through macroscopic neutron noise technique, the Auto Power Spectral Densities (APSD) were obtained for each detector configuration and various subcritical levels, and the prompt neutron decay constant (alpha) was extracted through a least squares procedure. The alpha parameter was used as an indicator for the comparison of the results and the quality of the experimental data. The values obtained show that the sum of counts technique presents no loss of information (correlated neutrons) even for different models and types of detectors, suggesting that the technique can be employed in neutron noise measurements. (AU) | |
| Processo FAPESP: | 13/14908-4 - Determinação experimental e análise dos tempos de geração de nêutrons do núcleo e do refletor e da fração de retorno do refletor em várias configurações do reator IPEN/MB-01 e seus impactos na determinação da reatividade do sistema |
| Beneficiário: | Eduardo Gonnelli |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |