Positron annihilation spectroscopy of Uranium Molybdenum alloys

Abstract

Positron annihilation spectroscopy has been carried out on as-cast and heat treated U-Mo alloys with Mo concentration varying from 8-10 wt. %. The positron lifetime data suggest that, upon heat treatment at 900 °C, the bulk lifetime decreases. The chemical surrounding of the positron annihilation sites is similar for the as-cast and heat treated samples suggesting a uniform distribution of Mo around defect sites.