Reactor activations to constrain astrophysically relevant cross sections

The determination of astrophysically relevant neutron-induced cross sections is particularly difficult when the involved isotopes are radioactive or very small. Activation experiments at reactors offer possibility to overcome these limitations with high neutron fluxes. flux typically based on activation two monitors known separate different components. usually applied cadmium difference method allows a distinction between thermal and epithermal part. By combination linear functions representing both components can be determined. However, if more than used, system equations overdetermined, which identification probability distribution. In this proceeding, feasibility relevance demonstrated.