Development of an electron-ion coincidence apparatus for molecular-frame electron energy loss spectroscopy studies

Noboru Watanabe, Tsukasa Hirayama, So Yamada, Masahiko Takahashi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We report details of an electron-ion coincidence apparatus, which has been developed for molecular-frame electron energy loss spectroscopy studies. The apparatus is mainly composed of a pulsed electron gun, an energy-dispersive electron spectrometer, and an ion momentum imaging spectrometer. Molecular-orientation dependence of the high-energy electron scattering cross section can be examined by conducting measurements of vector correlation between the momenta of the scattered electron and fragment ion. Background due to false coincidences is significantly reduced by introducing a pulsed electron beam and pulsing scheme of ion extraction. The experimental setup has been tested by measuring the inner-shell excitation of N2 at an incident electron energy of 1.5 keV and a scattering angle of 10.2°.

Original languageEnglish
Article number043105
JournalReview of Scientific Instruments
Volume89
Issue number4
DOIs
Publication statusPublished - 2018 Apr 1

ASJC Scopus subject areas

  • Instrumentation

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