Mechanism of sputtering of large biomolecular ions by impact of highly ionizing particles

Peter Williams, Bo Sundqvist

Research output: Contribution to journalArticle

71 Scopus citations

Abstract

We describe a model for the ejection of large biomolecules from surfaces by impact of high-energy (1 MeV/nucleon) heavy ions. The model involves the rapid vibrational excitation of the biomolecule by low-energy electron irradiation arising from the incident particle track. The excitation breaks most hydrogen bonds binding the molecule to the surface and causes the molecule to expand on a subpicosecond timescale; the expanding molecule pushes against the substrate and generates sufficient momentum to escape.

Original languageEnglish (US)
Pages (from-to)1031-1034
Number of pages4
JournalPhysical Review Letters
Volume58
Issue number10
DOIs
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Mechanism of sputtering of large biomolecular ions by impact of highly ionizing particles'. Together they form a unique fingerprint.

  • Cite this