Donnelly, S. E., Birtcher, R.C., Templier, C., Valizadeh, R. and Vishnyakov, Vladimir (1994) The Effect of Displacement Cascades on Small Helium Bubbles in Aluminum and Gold. MRS Proceedings, 373. ISSN 1946-4274

The evolution of individual helium bubbles in thin foils of gold and aluminum irradiated with 400 keV Ar+ and 200 keV Xe+ has been followed with in-situ transmission electron microscopy for a comparison between the effects of dilute (Al) and dense (Au) collision cascades. Bubble shrinkage in Al has been attributed to direct displacement of the gas out of the bubbles. Effects in Au, include the disappearance and Brownian motion of bubbles under irradiation, and are consistent with thermal spike processes seen in molecular dynamics simulations.

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