The Experimental Determination of the Spectral Indices 28{rho} and 25{delta} inside of the Fuel Pellet of the IPEN/MB-01 Reactor

Journal Article · Tue May 24 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1945272· OSTI ID:20722450

D'Utra Bitelli, Ulysses; Santos, Adimir dos; Siqueira, Paulo D; Jerez, Rogerio; Cacuri, Rosangela R ^[1]

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1. Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP, 05508-900 Butanta, Cidade Universitaria, S.P. (Brazil)

This work presents the measurements of the spectral indices 28{rho} and 25{delta} inside of the fuel pellet. To reach this goal an appropriate gamma-counting system based on a cylindrical collimator to shield the gammas arising from the outermost ring is employed. The proposed system is shown to be adequate and in principle can be used to measure these spectral indices across the pellet radius. The theory comparison of the spectral indices shows that the currently released library ENDF/B-VI.8 agrees reasonably well with the measurements.

• OSTI ID: 20722450
• Journal Information: AIP Conference Proceedings, Vol. 769, Issue 1; Conference: International conference on nuclear data for science and technology, Santa Fe, NM (United States), 26 Sep - 1 Oct 2004; Other Information: DOI: 10.1063/1.1945272; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
COLLIMATORS
COMPARATIVE EVALUATIONS
FISSION
FISSION SPECTRA
FUEL PELLETS
NUCLEAR DATA COLLECTIONS
NUCLEAR FUELS
REACTOR FUELING
RESEARCH REACTORS
SHIELDS