Measurement and analysis of activation induced in lanthanum, tantalum, and erbium by fusion peak neutrons

Samples of lanthanum, tantalum and erbium which are constituents of structural materials and insulating coatings for blankets of fusion reactor designs have been irradiated in a fusion peak neutron field. The induced gamma activities were measured and the results were used to validate calculations with the European activation system EASY-2005. Good agreement for the prediction of major contributors to the contact dose rate of the materials was found, but for minor contributors the calculation deviated up to 50%.