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

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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 2005

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Valine
amino acids
Amino acids
Desorption
desorption
Ions
Amino Acids
Molecules
scaling
molecules
ions
stopping power
Power electronics
Sputtering
Activation energy
plots
sputtering
Chemical activation
Irradiation
activation

Keywords

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

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

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title = "Analysis of the desorption of clusters of intact amino acid valine molecules induced by energetic monoatomic and cluster ions",
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.",
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T1 - Analysis of the desorption of clusters of intact amino acid valine molecules induced by energetic monoatomic and cluster ions

AU - Szenes, G.

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N2 - 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.

AB - 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.

KW - Biomolecule desorption

KW - Energetic ions

KW - Mass spectrometry

KW - Thermal activation

KW - Valine clusters

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