Abstract
ANITA-2000 is a code package for the activation characterization of materials exposed to neutron irradiation released by ENEA to OECD-NEADB and ORNL-RSICC. The main component of the package is the activation code ANITA-4M that computes the radioactive inventory of a material exposed to neutron irradiation. The code requires the decay data library (file fl1) containing the quantities describing the decay properties of the unstable nuclides and the library (file fl2) containing the gamma ray spectra emitted by the radioactive nuclei. The fl1 and fl2 files of the ANITA-2000 code package, originally based on the evaluated nuclear data library FENDL/D-2.0, were recently updated on the basis of the JEFF-3.1.1 Radioactive Decay Data Library. This paper presents the results of the validation of the new fl1 decay data library through the comparison of the ANITA-4M calculated values with the measured electron and photon decay heats and activities of fusion material samples irradiated at the 14 MeV Frascati Neutron Generator (FNG) of the NEA-Frascati Research Centre. Twelve material samples were considered, namely: Mo, Cu, Hf, Mg, Ni, Cd, Sn, Re, Ti, W, Ag and Al. The ratios between calculated and experimental values (C/E) are shown and discussed in this paper.
Highlights
IntroductionEPJ Web of Conferences evaluated nuclear data library FENDL/D-2.0 [11], were recently updated on the basis of the JEFF3.1.1 Radioactive Decay Data Library [12]
It has been widely validated and used in the past in ENEA-Bologna for radioactive inventories and source terms calculations for fusion plants safety analysis [5,6,7].The original package contains: a) the activation code ANITA-4M that traces back to the ANITA code (Analysis of Neutron Induced Transmutation and Activation [8]), b) two activation cross section libraries based respectively on EAF-99 [9] and on FENDL/A-2.0 [10], c) the decay data library containing the quantities describing the decay properties of the unstable nuclides and d) the library containing the gamma ray spectra emitted by the radioactive nuclei
This work presents the results of the validation of the new fl1 decay data library through the comparison of the ANITA-4M calculated values with the measured electron and photon decay heats and activities of fusion material samples irradiated at the 14 MeV Frascati Neutron Generator (FNG) of the ENEA-Frascati Research Centre
Summary
EPJ Web of Conferences evaluated nuclear data library FENDL/D-2.0 [11], were recently updated on the basis of the JEFF3.1.1 Radioactive Decay Data Library [12]. The ANITA-4M code uses a neutron cross section library based on the data of the European Activation File EAF-2010 [13] provided in the package EASY-2010 [14]. This work presents the results of the validation of the new fl decay data library through the comparison of the ANITA-4M calculated values with the measured electron and photon decay heats and activities of fusion material samples irradiated at the 14 MeV Frascati Neutron Generator (FNG) of the ENEA-Frascati Research Centre. Twelve material samples were considered, namely: Mo, Cu, Hf, Mg, Ni, Cd, Sn, Re, Ti, W, Ag and Al. The ratios between calculated and experimental values (C/E) are shown and discussed
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