A simple way to overcome the shortage of sup(3)He detectors in the IPEN/MB-01 nuclear reactor

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dc.contributor.authorGONNELLI, E.
dc.contributor.authorPINTO, L.N.
dc.contributor.authorLANDIM, H.R.
dc.contributor.authorDINIZ, R.
dc.contributor.authorJEREZ, R.
dc.contributor.authorSANTOS, A. dos
dc.coverageInternacionalpt_BR
dc.date.accessioned2016-11-22T12:09:38Z
dc.date.available2016-11-22T12:09:38Z
dc.date.issued2016pt_BR
dc.description.abstractIn order to overcome the shortage of 3He detectors for subcritical experiments in the IPEN/MB-01 reactor, some experiments were performed employing less sensitive detectors, such as BF3, and a logic input module, which sums the counts from different detectors. Through microscopic and macroscopic neutron noise technique, it was possible to obtain, respectively, Rossi-α distribution and Auto Power Spectral Densities (APSD) for each detector configuration and various subcritical levels, and the prompt neutron decay constant (α) was extracted through a least squares procedure. In addition, Cross Power Spectral Densities (CPSD) were acquired for different types of detectors and the correlation among those detectors was confirmed. It was also observed that there was no loss of correlation among the neutron pulses, and therefore, the CPSD curves demonstrated the presence of correlated events. The α parameter was used as an indicator for the comparison of the results and for the quality of the experimental data. The obtained values demonstrate that the sum of counts technique does not present loss of information (correlated neutrons) even for different models and types of detectors, suggesting that the technique may be employed in neutron noise measurements for subcritical reactivity.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDFAPESP:13/14908-4pt_BR
dc.format.extent1507-1512pt_BR
dc.identifier.citationGONNELLI, E.; PINTO, L.N.; LANDIM, H.R.; DINIZ, R.; JEREZ, R.; SANTOS, A. dos. A simple way to overcome the shortage of sup(3)He detectors in the IPEN/MB-01 nuclear reactor. <b>IEEE Transactions on Nuclear Science</b>, v. 63, n. 3, p. 1507-1512, 2016. DOI: <a href="https://dx.doi.org/10.1109/TNS.2016.2568241">10.1109/TNS.2016.2568241</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/26856.
dc.identifier.doi10.1109/TNS.2016.2568241pt_BR
dc.identifier.fasciculo3pt_BR
dc.identifier.issn0018-9499pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5989-5705
dc.identifier.percentilfi46.43
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/26856
dc.identifier.vol63pt_BR
dc.relation.ispartofIEEE Transactions on Nuclear Sciencept_BR
dc.rightsopenAccesspt_BR
dc.subjecthelium 3pt_BR
dc.subjectradiation detectorspt_BR
dc.subjectipen-mb-1 reactorpt_BR
dc.subjectshortagespt_BR
dc.subjectcriticalitypt_BR
dc.subjectboron fluoridespt_BR
dc.subjectcomparative evaluationspt_BR
dc.titleA simple way to overcome the shortage of sup(3)He detectors in the IPEN/MB-01 nuclear reactorpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorEDUARDO GONNELLI
ipen.autorLETICIA NEGRÃO PINTO
ipen.autorROGERIO JEREZ
ipen.autorADIMIR DOS SANTOS
ipen.autorRICARDO DINIZ
ipen.autorHUGO RODRIGUES LANDIM
ipen.codigoautor9733
ipen.codigoautor8765
ipen.codigoautor1336
ipen.codigoautor35
ipen.codigoautor1580
ipen.codigoautor11343
ipen.contributor.ipenauthorEDUARDO GONNELLI
ipen.contributor.ipenauthorLETICIA NEGRÃO PINTO
ipen.contributor.ipenauthorROGERIO JEREZ
ipen.contributor.ipenauthorADIMIR DOS SANTOS
ipen.contributor.ipenauthorRICARDO DINIZ
ipen.contributor.ipenauthorHUGO RODRIGUES LANDIM
ipen.date.recebimento16-11pt_BR
ipen.identifier.fi1.171pt_BR
ipen.identifier.ipendoc22567pt_BR
ipen.range.fi0.001 - 1.499
ipen.range.percentilfi25.00 - 49.99
ipen.type.genreArtigo
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relation.isAuthorOfPublication.latestForDiscoveryca3fa719-6752-46d5-8f6e-cacbf0e93672
sigepi.autor.atividadeGONNELLI, E.:9733:420:S
sigepi.autor.atividadePINTO, L.N.:8765:420:N
sigepi.autor.atividadeLANDIM, H.R.:11343:420:N
sigepi.autor.atividadeDINIZ, R.:1580:420:N
sigepi.autor.atividadeJEREZ, R.:1336:420:N
sigepi.autor.atividadeSANTOS, A. DOS:35:420:N
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