Detection of sputtered and evaporated carbon aggregates: Relative and absolute electron ionization fragmentation yields

C. Mair, H. Deutsch, K. Becker, T. D. Märk, E. Vietzke

Research output: Contribution to journalArticle

Abstract

The present study is a first attempt to determine electron impact ionization efficiencies for C2 and C3. A novel method has been applied to obtain the partial cross-section values for the reactions C2+e→C+, C2+e→C2 + and C3+e→C+, C3+e→C2 + and C3+e→C3 +. The neutral target consisting of C, C2 and C3 is produced by thermal evaporation from a heated graphite sample and the neutral precursors in the subsequent ionization process can be distinguished by their different flight-time distributions acquired in the evaporation process. The partial ionization cross-section ratios obtained in this experiment have been calibrated with calculated absolute total ionization cross section curves of C2 and C3 using the Deutsch-Mark (DM) formalism.

Original languageEnglish (US)
Pages (from-to)291-294
Number of pages4
JournalJournal of Nuclear Materials
Volume290-293
DOIs
StatePublished - Mar 2001

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ionization cross sections
Ionization
fragmentation
Carbon
evaporation
flight time
ionization
Electrons
carbon
electron impact
Impact ionization
Graphite
Thermal evaporation
graphite
formalism
cross sections
Evaporation
curves
Experiments

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Detection of sputtered and evaporated carbon aggregates : Relative and absolute electron ionization fragmentation yields. / Mair, C.; Deutsch, H.; Becker, K.; Märk, T. D.; Vietzke, E.

In: Journal of Nuclear Materials, Vol. 290-293, 03.2001, p. 291-294.

Research output: Contribution to journalArticle

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