ELASTIC AFTER EFFECT STUDIES OF MOLYBDENUM AFTER ELECTRON IRRADIATION AT 4.7 K

Abstract
The self-interstitial in bcc Mo is expected to have the <110> dumbbell configuration. These dumbbells should therefore be able to reorient and eventually migrate simultaneously similar to <100> dumbbells in the fcc-metals. Because of the large shape parameters δ λ of the self-interstitial in Mo as determined from Huang-scattering experiments, they should give rise to a large anelastic relaxation process. The identification of this process was the main aim of the present work. A relaxation process with the expected properties has however not been found after low temperature electron irradiation. It is concluded that the self-interstitials in Mo undergo a two dimensional migration without reorientation.