Abstract

The effect of the ‘thermal spike’ in the track of a swift heavy ion on nucleation of nanoclusters in the supersaturated solid solution is investigated. Precipitation can occur when the temperature in the track reaches such values where the nucleation time becomes shorter than the track cooling time. The region which stays the longest at temperatures resulting in the maximum nucleation rates can differ from that of the track center that results in a tubular inhomogeneity in the spatial density of nucleated nanoclusters. System parameters favorable for the appearance of nanosize tube-like heterostructures along the projectile trajectories are estimated.

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