Internal energy distribution of benzene molecular ions in surface‐induced dissociation

Károly Vékey, Árpád Somogyi, Vicki H. Wysocki

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Abstract

The so‐called ‘deconvolution’ method has been used to determine the internal energy distribution of molecular ions of an organic compound, benzene, excited by collisions with self‐assembled monolayer surfaces formed on gold. The average internal energy was found to increase linearly with the laboratory collision energy. The kinetic energy–internal energy (T–V) conversion was 17% for the octadecanethiolate monolayer and 28% for the 2‐(perfluorooctyl)‐ethanethiolate monolayer surface. The results are similar to those obtained for metal carbonyl projectiles, though they indicate somewhat higher energy conversion. In addition, excitation of the projectile ion well beyond 20 eV internal energy is observed.

Original languageEnglish
Pages (from-to)212-217
Number of pages6
JournalJournal of Mass Spectrometry
Volume30
Issue number1
DOIs
Publication statusPublished - Jan 1995

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ASJC Scopus subject areas

  • Spectroscopy

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