Horngming Hsieh

TL;DR: In this article, the primary state of damage produced by displacement cascades is controlled by replacement collision sequences during the ballistic phase, and melting and resolidification during the thermal spike.

TL;DR: The collisional dynamics between clusters of Cu, Ni, or Al atoms, with energies of 92 eV to 1.0 keV and sizes of 4 to 92 atoms, and substrates of these same metals were studied using molecular-dynamics computer simulations, finding diverse behavior, depending sensitively on the size and energy, the elastic and chemical properties of the cluster-substrate combination, and the relative mass.

TL;DR: The instantaneous diffusion coefficients in the cascade melt are in close agreement with those in the equilibrium liquid and the size and lifetime of the molten regions increase with ambient temperature, which results in a fourfold increase in atomic mixing between 0 to 700 K and a decrease in defect production.

TL;DR: In this paper, the role of electron-phononon coupling in thermal spike dynamics is discussed. But, the authors do not consider the effect of the electron particle coupling on the dynamics of the collision process.

TL;DR: A clear picture cluster-solid interaction is obtained after investigating the interaction of energetic clusters of atoms with solid surfaces with use of Foiler-Baskes-Daw embedded-atom-method potentials for Cu.