Positron annihilation spectroscopy of Uranium Molybdenum alloys

[摘要] 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.

[发布机构] Radiochemistry Division, Bhabha Atomic Research Center, Mumbai; 400085, India^1;Metallic Fuels Division, Bhabha Atomic Research Center, Mumbai; 400085, India^2

[效力级别] 化学

[关键词] As-cast;Bulk lifetime;Defect sites;Mo concentration;Positron lifetime;UMo alloy;Uniform distribution