Abstract
Helium bubbles were induced in gold and copper foils by ion bombardment and their diffusion studied by observing the rate at which the bubbles diffuse out of the foil and also by measuring the distance they move in a given annealing time. This is the first time such quantitative comparisons have been made. It was discovered that helium bubbles in gold diffuse at a rate 10-4 to 10-5 times that predicted by surface diffusion and that helium bubbles in copper diffuse at 10-5 to 10–2 the predicted rate. It is shown that the nucleation of steps on the faceted surface of the bubbles could satisfactorily account for the abnormally slow bubble diffusion rate. Such a process would inhibit the motion of bubbles in more anisotropic solids like oxides even more.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
