Analysis of the desorption of clusters of intact amino acid valine molecules induced by energetic monoatomic and cluster ions

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The experiments on the desorption of intact valine molecules and (nM + H)+ clusters are analyzed and a ln(Y/Se) - 1/Se scaling is found where Y, and Se are the sputtering yield and the electronic stopping power, respectively. The scaling can be derived with the assumption of a thermal activation mechanism. In the plots the desorption is a uniform process without threshold value of Se, having different activation energies U in various charge states. The desorption of (nM + H) + clusters proceeds in n steps with varying Coulomb contributions. Irradiation with C10 and C60 ions leads to higher Y, however, the increment is reduced with the increase of Se.

Original languageEnglish
Pages (from-to)502-506
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume230
Issue number1-4
DOIs
Publication statusPublished - Apr 1 2005

Keywords

  • Biomolecule desorption
  • Energetic ions
  • Mass spectrometry
  • Thermal activation
  • Valine clusters

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Fingerprint Dive into the research topics of 'Analysis of the desorption of clusters of intact amino acid valine molecules induced by energetic monoatomic and cluster ions'. Together they form a unique fingerprint.

  • Cite this