The diffusion in Al of reaction product He was measured by observing its rate of release from Al sheet on a mass spectrometer. Trapping of the He in Al was observed but prior to the trapping the diffusion coefficient was measured as: The average distance the He atoms must migrate in the Al to be trapped (obtained from the anneal curve shapes) depended on the anneal temperature and was ∼ 1 to 3 × 10−4 cm. This distance and its temperature dependence are best explained if He is trapped by diffusing to irradiation created vacancy clusters.
No takes yet. Share an insight, caveat, or question.
Glyde et al. (1965) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: