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Methodologies to assess uncertainties in the tritium production within lithium breeding blankets

Salvador J., Cabellos O., Díez C. J.

Nukleonika

2012

Vol. 57, No. 1

61-66

Tritium would have to be produced and controlled in the future fusion facilities. The capture of fusion neutrons by lithium has been proposed as a possible tritium reproduction reaction and lithium blankets for tritium breeding based on this reaction were designed. For the purpose of plant operation and for the safety reasons it is necessary to assess the accuracy with which we can predict the amount of tritium that can be produced. In particular, it is important to assess the impact that the uncertainties inherent in the nuclear data have on the prediced values. By focusing on specific applications and finding specific deficiencies, such studies point to possible directions to improve nuclear data sources. In this paper experimental data on tritium production in a mock-up system are reproduced and their uncertainties assessed in order to identify the reactions that have largest contributions to the total uncertainty.

First results of the prompt gamma characterization of 237Np

Genreith C., Rossbach M., Mauerhofer E., Belgya T., Caspary G.

Nukleonika

2012

Vol. 57, No. 4

443-446

A sample of 237Np was irradiated in the guided cold neutron beam of the PGAA-NIPS facility at the Budapest Research Reactor to acquire data on its characteristic prompt alfa-rays such as energies and relative intensities. A first evaluation of the obtained data showed significant differences from data reported in the evaluated nuclear structure data file (ENSDF) catalog.