Molecular desorption induced by heavy particle bombardment of solids

Barbara J. Garrison

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A classical dynamics model is used to investigate nuclear motion in solids due to bombardment by energetic atoms and ions. Of interest are the mechanisms of ejection and cluster formation both of elemental species such as Nin and Arn and molecular species where we have predicted intact ejection of benzene-C6H6, pyridine-C5H5N, napthalene-C10H8, biphenyl-C12H10 and coronene-C24H12. The results presented here show that the energy distributions of the parent molecular species, e.g. benzene, are narrower than those of atomic species, even though the ejection processes in both cases arise from energetic nuclear collisions. The bonding geometry also influences the ejection yield and angular distribution. The specific case of π-bonded and σ-bonded pyridine on a metal surface is discussed with comparisons between the calculated results and experimental data. These calculations provide a means of interpreting SIMS, FABMS and possibly even PDMS experimental data.

Original languageEnglish (US)
Pages (from-to)243-254
Number of pages12
JournalInternational Journal of Mass Spectrometry and Ion Physics
Volume53
Issue numberC
DOIs
StatePublished - Sep 20 1983

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