Numerical analysis of nanograin collision by classical molecular dynamics

N. Ohnishi, E. M. Bringa, B. A. Remington, G. Gilmer, R. Minich, Y. Yamaguchi, A. G.G.M. Tielens

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)


We have carried out atomistic simulations of grain-grain collisions for spherical grains of 1.4 and 4 nm radii, with relative velocities of 3.6-6.1 km/s and a number of impact parameters. Since the initial grains are crystallites without any pre-existing defects, grain shattering due to nucleation of cracks was not observed in our simulations. We find grain fusion in some events, but generally melting occurs, leading to nucleation, growth and linkage of voids in the melt, which then leads to production of small clusters. The size distribution does not obey a simple power law and can be considered as having four different regimes, where each regime can be fitted as a power law.

Original languageEnglish
Article number042017
JournalJournal of Physics: Conference Series
Issue numberPart 4
Publication statusPublished - 2008 Jun 12
Event5th International Conference on Inertial Fusion Sciences and Applications, IFSA 2007 - Kobe, Japan
Duration: 2007 Sept 92007 Sept 14


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