Calculation of the Effective Delayed Neutron Fraction by Deterministic and Monte Carlo Methods
Joint Authors
Dulla, S.
Carta, M.
Bianchini, G.
Peluso, V.
Ravetto, Piero
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-08-22
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The studies on Accelerator-Driven Systems (ADSs) have renewed the interest in the theoretical and computational evaluation of the main integral parameters characterizing subcritical systems (e.g., reactivity, effective delayed neutron fraction βeff, and mean prompt neutron generation time).
In particular, some kinetic parameters, as the effective delayed neutron fraction, are evaluated in Monte Carlo codes by formulations which do not require the calculation of the adjoint flux.
This paper is focused on a theoretical and computational analysis about how the different βeff definitions are connected and which are the approximations inherent to the Monte Carlo definition with respect to the standard definition involving weighted integrals.
By means of a refined transport computational analysis carried out in a coherent and consistent way, that is, using the same deterministic code and neutron data library for the βeff evaluation in different ways, the theoretical analysis is numerically confirmed.
Both theoretical and numerical results confirm the effectiveness of the Monte Carlo βeff evaluation, at least in cases where spectral differences between total and prompt fluxes are negligible with respect to the value of the functionals entering the classical βeff formulation.
American Psychological Association (APA)
Carta, M.& Dulla, S.& Peluso, V.& Ravetto, Piero& Bianchini, G.. 2011. Calculation of the Effective Delayed Neutron Fraction by Deterministic and Monte Carlo Methods. Science and Technology of Nuclear Installations،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-482749
Modern Language Association (MLA)
Carta, M.…[et al.]. Calculation of the Effective Delayed Neutron Fraction by Deterministic and Monte Carlo Methods. Science and Technology of Nuclear Installations No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-482749
American Medical Association (AMA)
Carta, M.& Dulla, S.& Peluso, V.& Ravetto, Piero& Bianchini, G.. Calculation of the Effective Delayed Neutron Fraction by Deterministic and Monte Carlo Methods. Science and Technology of Nuclear Installations. 2011. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-482749
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-482749