Study of the kinetics parameters for subcritical media driven by source
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2009
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st
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This paper presents a theoretical study of reactor kinetics focusing on the methodology of calculation and the
experimental measurements of the so-called kinetic parameters. A comparison between the methodology based
on the Dulla´s formalism and the classical method is made. The objective is to exhibit the dependence of the
parameters on sub criticality level and perturbation. Two different slab type systems were considered: thermal
one and fast one, both with homogeneous media. One group diffusion model was used for the fast reactor, and
for the thermal system, two group diffusion model, considering, in both case only one precursor’s family. For
reason of simplicity, several additional assumptions were made for calculation of two group method: no upscattering, fission reaction occurring only in thermal group, etc. The solutions for subcritical systems were
obtained using the expansion method, and for critical systems, the methods presented in classical textbooks of
reactor physics were applied. The numerical results presented their dependence on sub criticality level and
perturbation.
Como referenciar
LEE, S.M.; MAIORINO, J.R. Study of the kinetics parameters for subcritical media driven by source. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/16614. Acesso em: 30 Dec 2025.
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