Cruise Missile Engine Program. Contract Data Requirements List Sequence Number 95. Qualification Test Report. Volume XXV. Component Oil Reservoir F1-7-WR-102 and F107-WR-400 Cruise Missile Engines

摘要

The research performed under these Grants involved the development and application of the positron annihilation technique to defect studies in metals. The experiments performed during the last three years divide into three categories: (a) the study of the applicability of the simple trapping model to positron annihilation in pure lead as a function of temperature; (b) the study of vacancy-impurity interactions in Pb(Cd) and Pb(Tl) alloys, in order to test the excitonic model of 'fast diffusion' of some impurities in Pb; and (c) the design and testing of multidetector angular correlation setup to perform momentum density measurements in metals with hydrogen, in order to study the role of hydrogen in the electronic structure of pure metals.