Collision-energy-resolved Penning ionization electron spectroscopy of substituted ethylenes

Naoki Kishimoto, Takeo Oda, Koichi Ohno

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Collision-energy-resolved Penning ionization electron spectra of NH 2CH2CH2CN and HOCH2CH2CN by He*(23S) metastable atoms were observed. Ionization from orbitals extending around CN groups shows large intensity, negative collision energy dependence of partial ionization cross sections (CEDPICS) and negative peak energy shift with respect to the estimated peak positions at ionization energies, and attractive interactions around the nitrile group were obtained by model potential energy calculations. Attractive interactions around NH2 and OH groups also result in negative CEDPICS and negative peak energy shift. Observed bands in photoelectron spectrum and Penning ionization electron spectrum of NH2CH2CH 2CN can be ascribed to ionization from two conformers as calculated by a theoretical method.

Original languageEnglish
Pages (from-to)319-324
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Issue numberSPEC. ISS.
Publication statusPublished - 2004 Jul


  • Collision energy
  • Interaction potential
  • Partial ionization cross section
  • Penning ionization electron spectrum

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry


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