A neutron activation, transmutation and dose rate benchmark study
D-T plasmas are strong sources of 14 MeV neutrons, which are transmitted through the different components of the fusion reactor. During this process they induce activity by transmutation reactions in the structural materials. Three different computer code systems for predicting induced activation and transmutation reactions have been implemented with the same input data appropriate to JET conditions in order to compare their predictions. The computer codes and their associated data libraries are: FISPACT/UKACT1, ANITA/GREAC-ECN-3, REAC/REAC2. The results of this benchmark comparison show, in general, fairly close agreement. However, differences of up to a factor 84 could appear between the predictions of the induced activity of the different codes for specific radionuclides. In the case of some shorter-lived radionuclides the lack of agreement could be due to differences in the decay data, whilst for the better-known and less numerous long lived isotopes the differences are associated with variations in the cross section data for those isotopes.
Bibliographic Reference: Report: CLM-R295 EN (1989)
Availability: Available from the Librarian, UKAEA, Culham Laboratory, Abingdon, Oxon. OX14 3DB (GB)
Record Number: 199010434 / Last updated on: 1994-12-01
Original language: en
Available languages: en