Microshock wave propagation in molecular clusters

Israel Schek*, Joshua Jortner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


Microshock wave propagation in ArN (N=55-555) clusters generated by high-energy cluster-Pt surface impact (cluster velocities v = 1-10 km s-1) is explored by molecular dynamics simulations. The gross features of the dynamics of the intracluster microshock wave propagation at this impact velocity range are not sensitive to the details of the repulsive potential (i.e., the Lennard-Jones or the exp-6 form). The propagation of the microshock within the cluster was quantified by the time dependence of the first moment of the total energy. A linear dependence between the microshock (compression) velocity us and the cluster impact velocity v is observed and for sufficiently large clusters (N≥321) us≈v. For large clusters (N>321), the cluster Hugoniot temperature-pressure relations are qualitatively similar to those for the compression of macroscopic fluid Ar.

Original languageEnglish
Pages (from-to)4337-4342
Number of pages6
JournalJournal of Chemical Physics
Issue number11
StatePublished - 1996


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