R-Matrix Analyses of the 235U and 239Pu Neutron Cross Sections

R-MATRIX ANALYSES OF THE ²³⁵U AND ²³⁹Pu NEUTRON CROSS SECTIONS

H. Derrien^#, G. de Saussure, N.M. Larson, L.C. Leal^**, and R.B. Perez^**

Engineering Physics and Mathematics Division
Oak Ridge National Laboratory, Oak Ridge, TN37831-6354 USA
^#Centre d'Etudes Nucleaires de Cadarache, Saint-Paul-Lez-Durance, France
^**The University of Tennessee, Knoxville, Tennessee, USA

The resonance parameter analysis code SAMMY was used to perform consistent resonance analyses of several ²³⁵U and ²³⁹Pu fission and capture cross section and transmission measurements up to 110 eV for ²³⁵U and up to 1 keV for ²³⁹Pu. The method of analysis, the measurement selection and the results are briefly outlined in this paper.

KEYWORDS: ²³⁵U, ²³⁹Pu, Reich-Moore Resonance Parameters

R-MATRIX ANALYSES OF THE 235U AND 239Pu NEUTRON CROSS SECTIONS

R-MATRIX ANALYSES OF THE ²³⁵U AND ²³⁹Pu NEUTRON CROSS SECTIONS