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Simultaneous Determination of the Reactivity and Neutron Value in Kinetic Measurements to Account for Spatial Effects

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Atomic Energy Aims and scope

For known neutron value function, the equation of a nonstationary process in a reactor can be put into a form that is identical to the point-kinetic equation. On this basis, a method is proposed for simultaneously determining the reactivity and neutron value functionals directly from kinetic measurements; this makes it possible to correctly account for spatial effects theoretically. A transient process with strong deformation of the neutron flux in a planar reactor is examined. In neutron flux monitoring using a system of point detectors, the proposed procedure evaluates the reactivity to within 5%; according to the indications of individual detectors, the reactivity was found to be 0.8–6 times its true value.

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Authors and Affiliations

  1. National Research Center Kurchatov Institute, Moscow, Russia

    A. M. Degtyarev, A. A. Myasnikov & T. E. Trofimova

  2. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia

    O. A. Seryanina

  3. Afrikantov Experimental Design Bureau of Mechanical Engineering (OKBM Afrikantov), Nizhnii Novgorod, Russia

    S. E. Sorokin

Authors
  1. A. M. Degtyarev
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  2. A. A. Myasnikov
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  3. T. E. Trofimova
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  4. O. A. Seryanina
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  5. S. E. Sorokin
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Additional information

Translated from Atomnaya Énergiya, Vol. 120, No. 6, pp. 319–326, June, 2016.

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Degtyarev, A.M., Myasnikov, A.A., Trofimova, T.E. et al. Simultaneous Determination of the Reactivity and Neutron Value in Kinetic Measurements to Account for Spatial Effects. At Energy 120, 388–396 (2016). https://doi.org/10.1007/s10512-016-0147-2

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  • DOI: https://doi.org/10.1007/s10512-016-0147-2

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