Fast neutron dose measurements at the pressure vessel of a WWER-440 pressurized water reactor by the use of 93Nb(n, n')93mNb

Bruno Bärs, Hari Karnani

Research output: Contribution to journalArticle


The reaction Nb(n, n')93mNb with low threshold energy was used to obtain experimentally both absolute and accurate relative estimates for the fast neutron fluence (> 0.9 MeV) at the inner surface of the pressure vessel of a WWER-440 type PWR. The scraped samples from the cladding (which contains niobium) of the pressure vessel and niobium dosimeters from the surveillance chains were treated destructively for measuring weak X-rays with a Si(Li) detector and conversion electrons using liquid scintillation counting.
Original languageEnglish
Pages (from-to)369 - 376
Number of pages8
Issue number10
Publication statusPublished - 1986
MoE publication typeNot Eligible


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