Multiscale simulation of laser ablation of organic solids: Evolution of the plume

Michael I. Zeifman, Barbara J. Garrison, Leonid V. Zhigilei

Research output: Contribution to journalConference articlepeer-review

9 Scopus citations

Abstract

A computational approach that combines the molecular dynamics (MD) breathing sphere model for simulation of the initial stage of laser ablation and the direct simulation Monte Carlo (DSMC) method for simulation of the multi-component ablation plume development on the time- and length-scales of real experimental configurations is presented. The combined multiscale model addresses different processes involved in the laser ablation phenomenon with appropriate resolutions and, at the same time, accounts for the interrelations among the processes. Preliminary results demonstrate the capabilities of the model and provide new insights into complex processes occurring during the ablation plume expansion. The spatial distribution of monomers in the plume is found to be strongly affected by the presence of large clusters. Interaction between the clusters and monomers can result in splitting of the monomer distribution into faster and slower components. The overall spatial mass distribution is found to have little relation with the monomer distribution.

Original languageEnglish (US)
Pages (from-to)27-34
Number of pages8
JournalApplied Surface Science
Volume197-198
DOIs
StatePublished - Jan 1 2002
EventCola 2001 - Tsukuba, Japan
Duration: Oct 1 2001Oct 1 2001

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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