SYMPOSIA PAPER Published: 01 January 2001
STP13664S

Use of Reaction Nb(n, n') Nb to Determine Neutron Spectra at Outer PV Surface of WWER-1000 Reactor

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Among threshold reactions that are used to determine neutron field characteristics on the pressure vessel surface of the WWER-1000 reactor, the 93Nb(n,n')93mM) reaction has the greatest importance. Analysis shows that the set of experimentally obtained specific activities and the set of activities calculated using the IRDF-90 cross sections are not self-consistent. Comparative analysis of data for the 93Nb(n,n')93mNb reaction cross section, which is contained in the IRDF-90 library, and this cross section estimation on the basis of ENDF/B-VI, BROND-2 and ENSDF libraries have been performed.

Author Information

Gritzay, OO
Scientific Center “Institute for Nuclear Research”, Kyiv, Ukraine
Rusinko, PM
Scientific Center “Institute for Nuclear Research”, Kyiv, Ukraine
Vasylyeva, OG
Scientific Center “Institute for Nuclear Research”, Kyiv, Ukraine
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Details
Developed by Committee: E10
Pages: 737–744
DOI: 10.1520/STP13664S
ISBN-EB: 978-0-8031-5450-6
ISBN-13: 978-0-8031-2884-2