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The Determination of the Period-Reactivity Relation and Open-Loop Reactor Transfer Function From Rod-Drop Decay Data

W. J. FADER, R. C. HARRISON

Nuclear Science and Engineering / Volume 11 / Number 4 / Pages 405-414

December 1961

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Reactor period-reactivity relations and open-loop transfer functions may be determined directly by numerical integration of “rod-drop” neutron decay data without analysis into delayed neutron period and abundance values. Period-reactivity relations obtained by this method for two critical assemblies with and without beryllium in the core and reflector are compared with corresponding results calculated from the “in-hour” equation. Results of the application of the rod-drop experiment to the determination of the open-loop reactor transfer function are given for the beryllium-moderated assembly.

 
 
 
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