EPJ Web Conf.
Volume 153, 2017ICRS-13 & RPSD-2016, 13th International Conference on Radiation Shielding & 19th Topical Meeting of the Radiation Protection and Shielding Division of the American Nuclear Society - 2016
|Number of page(s)||6|
|Section||5. Fission Facilities, Fuel Cycle & Waste Management Facilities, Decommissioning|
|Published online||25 September 2017|
A useful observable for estimating keff in fast subcritical systems
1 INFN - sez. Genova, Via Dodecaneso, 33 - 16146 Genova ( Italy )
2 GeNERG - DIME/TEC - University of Genova, Via all’Opera Pia, 15/A - 16145 Genova ( Italy )
3 CENTRO FERMI, Compendio del Viminale, Piazza del Viminale 1, 00184 Rome, Italy
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Published online: 25 September 2017
The neutron multiplication factor keff is a key quantity to characterize subcritical neutron multiplying devices and for understanting their physical behaviour, being related to the fundamental eigenvalue of Boltzmann transport equation. Both the maximum available power - and all quantities related to it, like, e.g. the effectiveness in burning nuclear wastes - as well as reactor kinetics and dynamics depend on keff. Nevertheless, keff is not directly measurable and its determination results from the solution of an inverse problem: minimizing model dependence of the solution for keff then becomes a critical issue, relevant both for practical and theoretical reasons.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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