The European Activation File: EAF-99-JEFF-3 activation file-

Abstract

The European Activation File (EAF) project has been an ongoing process performed through European and world-wide cooperation that has led to the creation of succeeding EAF versions. The latest release, EAF -99, has benefited from the generation and maintenance of comprehensive activation files and the maturing of the processing code SYMPAL. Recently, for the first time, results of integral experiments have been used to adjust data. Validation of activation code predictions, and thereby of cross section and decay data, has been performed by means of direct comparison with measurements of sample structural material under fusion-relevant neutron spectra. The EAF-99 library contains 12,468 excitation functions involving 766 different targets from IH to 257Fm, atomic numbers 1 to 100, in the energy range 10. 5 e V to 20 Me V. The 1,500,000 lines that make up the pointwise file are then processed into numerous groupwise files with different micro-flux weighting spectra to meet various user needs. Uniquely, an uncertainty file is also provided that quantifies the degree of confidence placed on the data for each reaction channel.

Induced activity and damage of superconducting materials for a fusion reactor

“…Transmutation and induced radioactivity calculations were performed using the IRAC code [6]. Nuclear data in 42 energy groups covering the range from 0 to 15 MeV were taken from FENDL/A-2.0 [7], JENDL-3.2 [8], and EAF-99 [9]. FUSION 40 was used for calculating the dpa rate [10].…”

Neutron Irradiation Experiments: Automated Processing and Analysis of γ-spectra

“…Neutron transport simulations combined with inventory calculations, with codes such as MCNP [1] and FISPACT [2], respectively, can produce the necessary quantitative predictions, but the reliability of these is largely dependent on the quality of the nuclear reaction cross section data. In most cases, nuclear reaction data, in a database such as the European Activation File (EAF) [3], is either largely or entirely based on theoretical calculations due to a lack of experimental data.…”

Method for three-dimensional activation analysis of fusion reactor materials

“…EAF is included into the European activation system developed for the research purposes in fusion. The last issue of the library is EAF-97 [27].…”

“…The results of studying the applicability of the generally known activation programs FISPACT [12], REAC [20], FRINDA [2 11, ANITA [22] to the fusion area are generalised in [23]. The program testing was done taking into account reconinlendations of the consulting meeting under the aegis of IAEA (June, [25][26][27][28]1990) devoted to the results of checking the libraries FENDL-1 and FENDL-2 (IAEA document INDC (NDS)-241). At a given neutron spectrum and chosen libraries of cross-sections and decay constants, the following processes have been calculated:…”