The correlation matrix for the effective delayed neutron parameters of the IPEN/MB-01 reactor

摘要: Abstract The correlation matrix for the effective delayed neutron parameters of IPEN/MB-01 reactor has been successfully built in this work. A standard procedure employed several least-squares approaches was adopted to cope with task. One most important applications is serve as input data relationship between reactivity and asymptotic period a nuclear given by Inhour equation. Employing equation, calculated periods both negative positive. error propagation considered without matrix. analyses reveal that consideration very important. In general, introduction reduces overall uncertainty reasonable amount. There are huge cancellations analyses. also will depend on specific range where quantity considered. Considering considered, uncertainties around 3.5% while positive ones they nearly 2%. If not high 6%. All work 1-σ values. two extreme cases plays no role; large small periods. first case, decay constant fundamental role second prompt generation major importance. experiments performed at evaluated inclusion IRPhE handbook determination be extremely benefited considering their final product can useful validate methods related thermal reactors fueled Uranium.