A high sensitivity electron momentum spectrometer with two-dimensional detectors and electron momentum distributions of several simple molecules

Masahiko Takahashi, Yasuo Udagawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Electron momentum spectroscopy (EMS) makes it possible to examine orbital patterns of individual molecular orbitals in momentum space. A new spectrometer for electron-electron coincidence experiments for EMS has been developed to obtain orbital patterns quantitatively. Using a spherical analyzer and position-sensitive two-dimensional detectors combined with fast electronics, simultaneous measurements of energy and angular correlations between the two outgoing electrons can be made. This spectrometer features high sensitivity and an ease of changing impact energies. Details of the apparatus are described and impact energy dependence of electron momentum distributions of the HOMO of H2 and biacetyl are compared.

Original languageEnglish
Pages (from-to)387-391
Number of pages5
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume137-140
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Jul 1

Keywords

  • Biacetyl
  • Electron momentum spectroscopy
  • Glyoxal
  • Orbital pattern
  • Position-sensitive detector

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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