Measurement of the thermal neutron capture cross section and resonance integral of Am-241

Measurements of the thermal neutron cross section and resonance integral fo r the reaction Am-241(n, gamma) Am-241g have been performed at the IEA-RI r esearch reactor operating at 2 MW. A 4 pi beta - gamma coincidence system a pplying the tracer technique has been used for measuring the activities. Ir radiations with and without cadmium cover were performed and the neutron tr ansmission through this cover was calculated by the Monte Carlo method. Hig h resolution gamma -ray spectrometry measurements were undertaken in order to check the consistency of the results and to measure activities of the ne utron fluence monitor foils. Covariance analysis has been applied to all un certainties involved. The thermal neutron cross section for 2200 m/s neutro ns and the resonance integral resulted (602 +/- 9)b and (1665 +/- 91)b, res pectively. These results are discussed and compared with previous measureme nts.