STP1001

    Application of Boron Covers for Neutron Spectrum Determination Purposes in Various Neutron Environments

    Published: Jan 1989


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    Abstract

    Foil irradiation experiments were carried out at LFR (ECN. Petten) and WWR-SM (KFKI, Budapest). The effect of boron covers on the activation and fission detector response regions has been investigated. Fluence rate perturbation due to the applied B4C box in graphite or water was determined by means of transport calculations. Neutron spectrum adjustments were performed by the SAND-II and STAY'SL codes. The B4C cover shifts the response regions of the resonance reactions from the thermal region to the 0.1 keV to 1.0 MeV interval. Where boron-covered reactions are used in a least squares spectrum adjustment procedure, the uncertainty of the spectrum is reduced significantly in the intermediate energy region.

    Keywords:

    neutron spectra, spectra unfolding, activation detectors, threshold detectors, neutron metrology, neutron dosimetry, discrete ordinates


    Author Information:

    Végh, J
    Central Research Institute for Physics, Budapest,

    Zijp, WL
    Netherlands Energy Research Foundation ECN, ZG Petten (NH),

    Nolthenius, HJ
    Netherlands Energy Research Foundation ECN, ZG Petten (NH),

    Alloggio, G
    Ente Nazionale per l'Energia Elettrica, Centro di Ricercia Termica e Nucleare. ENEL/CRTN, Milano,

    Brega, E
    Ente Nazionale per l'Energia Elettrica, Centro di Ricercia Termica e Nucleare. ENEL/CRTN, Milano,


    Paper ID: STP10125S

    Committee/Subcommittee: E10.05

    DOI: 10.1520/STP10125S


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