OBJECTIVESDOE-HDBK-1019/2-93Reactor Theory (Nuclear Parameters)TERMINAL OBJECTIVE1.0Using appropriate references, DESCRIBE the neutron life cycle discussed in thismodule.ENABLING OBJECTIVES1.1DEFINEthe following terms:a.Infinite multiplication factor, kb.Effective multiplication factor, keffc.Subcriticald.Criticale.Supercritical1.2DEFINEeach term in the six factor formula using the ratio of the number of neutronspresent at different points in the neutron life cycle.1.3Given the macroscopic cross sections for various materials, CALCULATE the thermalutilization factor.1.4Given microscopic cross sections for absorption and fission, atom density, and n,CALCULATEthe reproduction factor.1.5Given the numbers of neutrons present at the start of a generation and values for eachfactor in the six factor formula, CALCULATE the number of neutrons that will bepresent at any point in the life cycle.1.6LISTphysical changes in the reactor core that will have an effect on the thermalutilization factor, reproduction factor, or resonance escape probability.1.7EXPLAINthe effect that temperature changes will have on the following factors:a.Thermal utilization factorb.Resonance escape probabilityc.Fast non-leakage probabilityd.Thermal non-leakage probability1.8Given the number of neutrons in a reactor core and the effective multiplication factor,CALCULATEthe number of neutrons present after any number of generations.NP-03Page viRev. 0
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