STP1490: Reactor Dosimetry with Niobium

    Wagemans, Jan
    SCK·CEN, Mol,

    Borms, Luc
    SCK·CEN, Mol,

    Willekens, Marcel
    SCK·CEN, Mol,

    Oeyen, Jos
    SCK·CEN, Mol,

    Moens, Andre
    EC-IRMM, Geel,

    Kochkin, Vyacheslav
    Kurchatov Institute, Moscow,

    Pages: 8    Published: Jan 2007


    The main advantages of using niobium in reactor dosimetry are briefly summarized. Some experimental aspects and complications of niobium dosimetry are discussed. Special techniques can be applied to overcome most of these problems. Particular concern has to be given to the detector calibration for the X-ray measurements. The main problem however, embrittlement of pure niobium under intense neutron irradiation, is still not solved. For this purpose a new type of material (Al-10%Nb alloy) was prepared. Although testing of this material is still ongoing, preliminary results are promising. This material moreover does not necessarily require applying special techniques for the X-ray measurements. Finally it is explained that niobium is a suitable material for the determination of thermal and epithermal fluences in high flux environments.


    neutron dosimetry, niobium, neutron activation, neutron fluence

    Paper ID: STP45479S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP45479S

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