Cluster-surface impact dissociation of halogen molecules in large inert gas clusters

Israel Schek, Joshua Jortner, Raz Tamar, R. D. Levine

Research output: Contribution to journalArticlepeer-review

Abstract

Molecular dynamics simulations of the dissociation of I2 embedded in large Arn (n = 319, 553) clusters, which impact at high velocities (v = 7-15 km s -1) on Pt surfaces, result in information on heterogeneous and homogeneous dissociation mechanisms. A broad distribution of dissociation lifetimes is exhibited, which can be attributed to prompt and retarded heterogeneous dissociation and to prompt, retarded and outbound homogeneous dissociation events. The propagation of a microshock wave within a large cluster can be interrogated by the homogeneous dissociation of a chemical probe, with the velocity of the propagation of the dissociation front being close to the cluster impact velocity.

Original languageEnglish
Pages (from-to)273-279
Number of pages7
JournalChemical Physics Letters
Volume257
Issue number3-4
DOIs
StatePublished - 26 Jul 1996

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