Resonance Processing

  • Bahman Zohuri


In this chapter, we will study the Doppler broadening of resonances. Doppler effect improves reactor stability. Broadened resonance or heating of a fuel results in a higher probability of absorption, thus causing negative reactivity insertion or reduction of reactor power. One of the most important virtues of the optical model is that it takes into account the existence of giant or broad resonances in the total cross section as part of neutronic analysis for nuclear reactor systems. For resonances of energy levels, which are spaced widely apart, we can describe the energy dependency of the absorption cross section via Breit-Wigner single-level resonance formula.


  1. 1.
    Y. Oka, T. Kiguchi, Nuclear Reactor Design (An Advanced Course in Nuclear Engineering), Springer Publishing Company, June 2014Google Scholar
  2. 2.
    J. Duderstadt, L. Hamilton, Nuclear Reactor Analysis (John Wiley Publishing Company, New York, NY, 1976)Google Scholar
  3. 3.
  4. 4.
  5. 5.
    H.A. Bethe, G. Placzek, Resonance effects in nuclear processes. Phys. Rev. 51, 450 (1937)CrossRefGoogle Scholar
  6. 6.
    J.R. Lamarsh, Introduction to Nuclear Reactor Theory (Addison Wesley Publishing Company, Inc, New York, NY, 1966)Google Scholar
  7. 7.
    A. Alpan, L.C. Leal, A. Courcelle, Effect of Energy Self-Shielding Methods on U238 for Criticality Safety, PHYSOR 2004 – The Physics of Fuel Cycles and Advanced Nuclear Systems: Global Developments Chicago, Illinois, April 25–29, 2004, on CD-ROM, American Nuclear Society, Lagrange Park, IL (2004)Google Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Bahman Zohuri
    • 1
  1. 1.Galaxy Advanced Engineering, Inc.University of New MexicoAlbuquerqueUSA

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