Multilevel S-Matrix Analysis of 235U Neutron Cross Sections up to 93 eV Using the Collision Matrix Unitarity Method

  • V. V. Kolesov
  • A. A. Lukyanov
Conference paper
Part of the Research Reports in Physics book series (RESREPORTS)


A new multilevel fit to 235U total and fission cross section data up to 93 eV has been obtained in S-matrix formalism. The collision matrix unitarity method has been used to construct elastic scattering and neutron capture resonance cross-sections from the total and fission resonance parameters. So, interference effects have been taken into account for all partial cross-sections. Resonance parameters have been written in ENDF/B format.

Group averaged cross-sections and neutron transmission have been calculated and compared with other evaluations and experimental results.


Elastic Scattering Simplex Method Resonance Parameter Section Data Energy Integral 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • V. V. Kolesov
    • 1
  • A. A. Lukyanov
    • 1
  1. 1.Obninsk Institute of Nuclear Power EngineeringIATEObninsk, Kaluga reg.USSR

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