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Abstract

Results of investigations of radiation enhanced nd diffusion using 17.65 MeV protons are reported and compared with results obtained for 2 MeV electrons. The activation energy of diffusion decreases considerably from 0.35 eV to 0.26 eV for displacement rates increasing from 3x10-12 dpa.s-1 to 1.2x10-8 dpa.s-1, i.e. the migration activation energy of interstitials decreases for this dpa.s-1 range from EM/1-I= 0.70 eV to EM/1-I= 0.52 eV. Results of electron irradiations obtained for 0.050 mm and 0.10 mm thick specimens are compared. It is found that the nd diffusion rates increase considerably in the presence of rd dislocations and that the diffusion rates decrease for very low electron fluxes and high irradiation temperatures in the 0.050 mm thick specimens in comparison to the rates obtained in 0.10 mm thick specimens.

Additional information

Authors: SCHUELE W JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: THIRD INTERNATIONAL CONFERENCE ON FUSION REACTOR MATERIALS, KARLSRUHE (GERMANY), OCT. 4-8, 1987 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 33533 ORA
Availability: Can be ordered online
Record Number: 1989126028701 / Last updated on: 1989-01-01
Category: PUBLICATION
Available languages: en