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Spectral Synthesis Applied to Fast-Reactor Dynamics

Weston M. Stacey, Jr.

Nuclear Science and Engineering / Volume 41 / Number 2 / Pages 249-258

August 1970

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Spectral synthesis methods, in which the neutron flux spectrum is synthesized from known trial spectra, is applied to fast-reactor dynamics. Numerical results demonstrate that important spectral shift effects which occur during transients are adequately represented by synthesis models with two trial spectra. Conventional few-group models which require equivalent computational effort are found to provide a significantly inferior representation of these effects.

 
 
 
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