Abstract
The model which was presented previously [J. Yu, W.F. Sommer and J.N. Bradbury, J. Nucl. Mater. 141–143 (1986) 65] has been modified. Generally, the bubble growth process is due to thermal motion of atoms. The atoms on the surface of bubbles participate directly in the bubble growth process and the surface fluctuations prompt actual bubble growth or shrinkage. Therefore, it is the fluctuation of atom motion on the surface of bubble that plays a more important role than the rest of bubble volume. Only fluctuations in the near surface region need to be considered. This modification results in a much better fit to published experimental results.
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