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The most important effects of neutron irradiation on beryllium are swelling, embrittlement and tritium retention. The helium produced by the 9Be(n,2n)2(4)He reaction is the cause of beryllium swelling which is the main limiting lifetime factor for the material. It was, therefore, decided to develop a computer code capable of describing the helium behaviour in beryllium; the approach used was to modify an existing code available for the modelling of the UO(2) performance in fission reactors. The resulting code ANFIBE (ANalysis of Fusion Irradiated BEryllium) allows gas distribution, induced swelling and helium release from beryllium to be calculated. Good agreement between experimental and calculated swelling has been found. However, more data are needed to complete the validation of ANFIBE.

Additional information

Authors: DALLE DONNE M, Kernforschungszentrum Karlsruhe, Institut für Neutronenphysik und Reaktortechnik (DE);SCAFFIDI-ARGENTINA F, Kernforschungszentrum Karlsruhe, Institut für Neutronenphysik und Reaktortechnik (DE);FERRERO C, European Synchrotron Radiation Facility, Grenoble (FR);RONCHI C, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: International Workshop on Fusion Materials, Karlsruhe (DE), October 4-6, 1993
Availability: Available from (1) as Paper EN 37987 ORA
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