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Radiation Protection Dosimetry 2005 115(1-4):58-62; doi:10.1093/rpd/nci164
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Properties of the Feynman-{alpha} method applied to accelerator-driven subcritical systems

S. Taczanowski*, G. Domanska, M. Kopec and J. Janczyszyn

Faculty of Physics and Nuclear Techniques, AGH University of Science and Technology, Cracow 30 059, Poland

* Corresponding author: taczanowski{at}novell.ftj.agh.edu.pl

A Monte Carlo study of the Feynman-method with a simple code simulating the multiplication chain, confined to pertinent time-dependent phenomena has been done. The significance of its key parameters (detector efficiency and dead time, k-source and spallation neutrons multiplicities, required number of fissions etc.) has been discussed. It has been demonstrated that this method can be insensitive to properties of the zones surrounding the core, whereas is strongly affected by the detector dead time. In turn, the influence of harmonics in the neutron field and of the dispersion of spallation neutrons has proven much less pronounced.


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