Community Research and Development Information Service - CORDIS


This report contains a complete description of the computer code ANITA. The code computes the radioactive inventory of a material subject to neutron irradiation, continuous or stepwise. It provides the activity, atomic density, decay heat and ingestion hazard of each nuclide, as well as total activity, decay heat, contact dose equivalent, gamma-ray spectra and other relevant parameters for the irradiated material versus cooling time. These parameters may be plotted as a function of the cooling time. The report describes the method used to solve the decay equations and deal with the complex pattern of the chains produced by sequences of neutron reaction-decay processes. The code is provided with a complete data base which allows the performance of calculations for all elements with atomic numbers smaller than 84 (up to bismuth). The cross-sections and the decay data library were developed in view of the application to fusion technology. The GREAC-ECN-5 cross-sections have the standard 100 neutron groups structure, with upper energy of 14.9 MeV. They are the group-versions of a point file, developed for fusion application. The results of a benchmark problem to validate the code are also reported.

Additional information

Authors: PONTI C, JRC Ispra (IT);STRAMACCIA S, JRC Ispra (IT)
Bibliographic Reference: EUR 12622 EN (1990) 36 pp., MF, ECU 4, blow-up copy ECU 5
Availability: (2)
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